Annotation of src/usr.bin/newsyslog/newsyslog.c, Revision 1.110
1.110 ! millert 1: /* $OpenBSD: newsyslog.c,v 1.109 2018/09/16 02:44:06 millert Exp $ */
1.10 downsj 2:
3: /*
1.110 ! millert 4: * Copyright (c) 1999, 2002, 2003 Todd C. Miller <millert@openbsd.org>
1.30 millert 5: *
1.66 millert 6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.72 millert 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.78 millert 17: *
1.72 millert 18: * Sponsored in part by the Defense Advanced Research Projects
19: * Agency (DARPA) and Air Force Research Laboratory, Air Force
20: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
1.30 millert 21: */
22:
23: /*
1.10 downsj 24: * Copyright (c) 1997, Jason Downs. All rights reserved.
25: *
26: * Redistribution and use in source and binary forms, with or without
27: * modification, are permitted provided that the following conditions
28: * are met:
29: * 1. Redistributions of source code must retain the above copyright
30: * notice, this list of conditions and the following disclaimer.
31: * 2. Redistributions in binary form must reproduce the above copyright
32: * notice, this list of conditions and the following disclaimer in the
33: * documentation and/or other materials provided with the distribution.
34: *
35: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
36: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
37: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
39: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
42: * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
43: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
44: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
45: * SUCH DAMAGE.
46: */
1.3 deraadt 47:
1.1 deraadt 48: /*
49: * This file contains changes from the Open Software Foundation.
50: */
51:
52: /*
1.50 millert 53: * Copyright 1988, 1989 by the Massachusetts Institute of Technology
54: *
55: * Permission to use, copy, modify, and distribute this software
56: * and its documentation for any purpose and without fee is
57: * hereby granted, provided that the above copyright notice
58: * appear in all copies and that both that copyright notice and
59: * this permission notice appear in supporting documentation,
60: * and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
61: * used in advertising or publicity pertaining to distribution
62: * of the software without specific, written prior permission.
63: * M.I.T. and the M.I.T. S.I.P.B. make no representations about
64: * the suitability of this software for any purpose. It is
65: * provided "as is" without express or implied warranty.
66: */
1.1 deraadt 67:
68: /*
69: * newsyslog - roll over selected logs at the appropriate time,
1.65 millert 70: * keeping the specified number of backup files around.
1.1 deraadt 71: *
72: */
73:
1.101 tedu 74: #define CONF "/etc/newsyslog.conf"
75: #define PIDFILE "/var/run/syslog.pid"
76: #define COMPRESS "/usr/bin/gzip"
77: #define COMPRESS_POSTFIX ".gz"
78: #define STATS_DIR "/var/run"
79: #define SENDMAIL "/usr/sbin/sendmail"
1.1 deraadt 80:
1.93 deraadt 81: #include <sys/param.h> /* DEV_BSIZE */
1.103 jca 82: #include <sys/queue.h>
1.48 millert 83: #include <sys/stat.h>
1.9 downsj 84: #include <sys/time.h>
85: #include <sys/wait.h>
1.48 millert 86:
1.1 deraadt 87: #include <ctype.h>
1.48 millert 88: #include <err.h>
89: #include <errno.h>
1.9 downsj 90: #include <fcntl.h>
1.1 deraadt 91: #include <grp.h>
1.47 millert 92: #include <limits.h>
1.48 millert 93: #include <pwd.h>
94: #include <signal.h>
95: #include <stdio.h>
96: #include <stdlib.h>
97: #include <string.h>
1.68 millert 98: #include <time.h>
1.9 downsj 99: #include <unistd.h>
1.1 deraadt 100:
1.26 millert 101: #define CE_ROTATED 0x01 /* Log file has been rotated */
1.65 millert 102: #define CE_COMPACT 0x02 /* Compact the archived log files */
1.26 millert 103: #define CE_BINARY 0x04 /* Logfile is in binary, don't add */
1.10 downsj 104: /* status messages */
1.65 millert 105: #define CE_MONITOR 0x08 /* Monitor for changes */
1.45 wcobb 106: #define CE_FOLLOW 0x10 /* Follow symbolic links */
1.65 millert 107: #define CE_TRIMAT 0x20 /* Trim at a specific time */
1.35 deraadt 108:
1.100 tb 109: #define MIN_PID 2 /* Don't touch pids lower than this */
1.58 millert 110: #define MIN_SIZE 256 /* Don't rotate if smaller (in bytes) */
1.49 millert 111:
1.50 millert 112: #define DPRINTF(x) do { if (verbose) printf x ; } while (0)
113:
1.1 deraadt 114: struct conf_entry {
1.35 deraadt 115: char *log; /* Name of the log */
1.51 millert 116: char *logbase; /* Basename of the log */
117: char *backdir; /* Directory in which to store backups */
1.35 deraadt 118: uid_t uid; /* Owner of log */
119: gid_t gid; /* Group of log */
120: int numlogs; /* Number of logs to keep */
1.58 millert 121: off_t size; /* Size cutoff to trigger trimming the log */
1.35 deraadt 122: int hours; /* Hours between log trimming */
1.63 millert 123: time_t trim_at; /* Specific time at which to do trimming */
1.77 millert 124: mode_t permissions; /* File permissions on the log */
1.30 millert 125: int signal; /* Signal to send (defaults to SIGHUP) */
1.35 deraadt 126: int flags; /* Flags (CE_COMPACT & CE_BINARY) */
1.10 downsj 127: char *whom; /* Whom to notify if logfile changes */
1.65 millert 128: char *pidfile; /* Path to file containing pid to signal */
1.30 millert 129: char *runcmd; /* Command to run instead of sending a signal */
1.103 jca 130: TAILQ_ENTRY(conf_entry) next;
1.1 deraadt 131: };
1.103 jca 132: TAILQ_HEAD(entrylist, conf_entry);
1.1 deraadt 133:
1.30 millert 134: struct pidinfo {
135: char *file;
136: int signal;
137: };
138:
1.52 millert 139: int verbose = 0; /* Print out what's going on */
140: int needroot = 1; /* Root privs are necessary */
141: int noaction = 0; /* Don't do anything, just show it */
1.33 millert 142: int monitormode = 0; /* Don't do monitoring by default */
1.52 millert 143: int force = 0; /* Force the logs to be rotated */
144: char *conf = CONF; /* Configuration file to use */
145: time_t timenow;
1.93 deraadt 146: char hostname[HOST_NAME_MAX+1]; /* Hostname */
1.102 bluhm 147: char daytime[33]; /* timenow in human readable form */
1.65 millert 148: char *arcdir; /* Dir to put archives in (if it exists) */
1.1 deraadt 149:
1.74 millert 150: char *lstat_log(char *, size_t, int);
151: char *missing_field(char *, char *, int);
152: char *sob(char *);
153: char *son(char *);
154: int age_old_log(struct conf_entry *);
155: int domonitor(struct conf_entry *);
156: int isnumberstr(char *);
157: int log_trim(char *);
1.77 millert 158: int movefile(char *, char *, uid_t, gid_t, mode_t);
1.74 millert 159: int stat_suffix(char *, size_t, char *, struct stat *,
160: int (*)(const char *, struct stat *));
1.79 millert 161: off_t sizefile(struct stat *);
1.105 jca 162: int parse_file(struct entrylist *, int *);
1.74 millert 163: time_t parse8601(char *);
164: time_t parseDWM(char *);
165: void child_killer(int);
166: void compress_log(struct conf_entry *);
167: void do_entry(struct conf_entry *);
168: void dotrim(struct conf_entry *);
1.81 millert 169: void rotate(struct conf_entry *, const char *);
1.74 millert 170: void parse_args(int, char **);
171: void run_command(char *);
172: void send_signal(char *, int);
173: void usage(void);
1.1 deraadt 174:
1.25 millert 175: int
1.48 millert 176: main(int argc, char **argv)
1.1 deraadt 177: {
1.103 jca 178: struct entrylist config, runlist;
179: struct conf_entry *p, *q, *tmp;
1.30 millert 180: struct pidinfo *pidlist, *pl;
1.105 jca 181: int status, listlen, ret;
1.53 millert 182: char **av;
1.107 jca 183:
1.48 millert 184: parse_args(argc, argv);
1.53 millert 185: argc -= optind;
186: argv += optind;
187:
1.35 deraadt 188: if (needroot && getuid() && geteuid())
1.11 downsj 189: errx(1, "You must be root.");
1.53 millert 190:
1.103 jca 191: TAILQ_INIT(&config);
192: TAILQ_INIT(&runlist);
193:
1.109 millert 194: /* Keep passwd and group files open for faster lookups. */
195: setpassent(1);
196: setgroupent(1);
197:
1.105 jca 198: ret = parse_file(&config, &listlen);
1.103 jca 199: if (argc == 0)
200: TAILQ_CONCAT(&runlist, &config, next);
201: else {
1.53 millert 202: /* Only rotate specified files. */
203: listlen = 0;
204: for (av = argv; *av; av++) {
1.103 jca 205: TAILQ_FOREACH_SAFE(q, &config, next, tmp)
1.53 millert 206: if (strcmp(*av, q->log) == 0) {
1.103 jca 207: TAILQ_REMOVE(&config, q, next);
208: TAILQ_INSERT_TAIL(&runlist, q, next);
1.53 millert 209: listlen++;
210: break;
211: }
212: if (q == NULL)
1.60 millert 213: warnx("%s: %s not found", conf, *av);
1.53 millert 214: }
1.103 jca 215: if (TAILQ_EMPTY(&runlist))
1.60 millert 216: errx(1, "%s: no specified log files", conf);
1.53 millert 217: }
1.26 millert 218:
1.95 deraadt 219: pidlist = calloc(listlen + 1, sizeof(struct pidinfo));
1.30 millert 220: if (pidlist == NULL)
1.106 jca 221: err(1, NULL);
1.28 millert 222:
1.53 millert 223: signal(SIGCHLD, child_killer);
224:
1.26 millert 225: /* Step 1, rotate all log files */
1.103 jca 226: TAILQ_FOREACH(q, &runlist, next)
1.35 deraadt 227: do_entry(q);
1.26 millert 228:
1.28 millert 229: /* Step 2, make a list of unique pid files */
1.103 jca 230: pl = pidlist;
231: TAILQ_FOREACH(q, &runlist, next) {
1.28 millert 232: if (q->flags & CE_ROTATED) {
1.30 millert 233: struct pidinfo *pltmp;
1.28 millert 234:
1.30 millert 235: for (pltmp = pidlist; pltmp < pl; pltmp++) {
1.76 otto 236: if ((q->pidfile && pltmp->file &&
1.55 millert 237: strcmp(pltmp->file, q->pidfile) == 0 &&
238: pltmp->signal == q->signal) ||
1.76 otto 239: (q->runcmd && pltmp->file &&
1.30 millert 240: strcmp(q->runcmd, pltmp->file) == 0))
1.28 millert 241: break;
1.30 millert 242: }
243: if (pltmp == pl) { /* unique entry */
244: if (q->runcmd) {
245: pl->file = q->runcmd;
246: pl->signal = -1;
247: } else {
248: pl->file = q->pidfile;
249: pl->signal = q->signal;
250: }
1.31 millert 251: pl++;
1.30 millert 252: }
1.28 millert 253: }
1.35 deraadt 254: }
1.26 millert 255:
1.30 millert 256: /* Step 3, send a signal or run a command */
1.76 otto 257: for (pl--; pl >= pidlist; pl--) {
1.56 millert 258: if (pl->file != NULL) {
259: if (pl->signal == -1)
260: run_command(pl->file);
261: else
262: send_signal(pl->file, pl->signal);
263: }
1.30 millert 264: }
1.28 millert 265: if (!noaction)
266: sleep(5);
267:
268: /* Step 4, compress the log.0 file if configured to do so and free */
1.104 jca 269: TAILQ_FOREACH(p, &runlist, next) {
1.81 millert 270: if ((p->flags & CE_COMPACT) && (p->flags & CE_ROTATED) &&
271: p->numlogs > 0)
1.51 millert 272: compress_log(p);
1.35 deraadt 273: }
1.16 millert 274:
275: /* Wait for children to finish, then exit */
276: while (waitpid(-1, &status, 0) != -1)
277: ;
1.105 jca 278: return (ret);
1.1 deraadt 279: }
280:
1.25 millert 281: void
1.48 millert 282: do_entry(struct conf_entry *ent)
1.1 deraadt 283: {
1.80 deraadt 284: struct stat sb;
1.91 tedu 285: int modhours;
1.58 millert 286: off_t size;
1.45 wcobb 287:
1.51 millert 288: if (lstat(ent->log, &sb) != 0)
1.50 millert 289: return;
290: if (!S_ISREG(sb.st_mode) &&
291: (!S_ISLNK(sb.st_mode) || !(ent->flags & CE_FOLLOW))) {
292: DPRINTF(("--> not a regular file, skipping\n"));
293: return;
1.45 wcobb 294: }
1.79 millert 295: if (S_ISLNK(sb.st_mode) && stat(ent->log, &sb) != 0) {
296: DPRINTF(("--> link target does not exist, skipping\n"));
297: return;
298: }
299: if (ent->uid == (uid_t)-1)
300: ent->uid = sb.st_uid;
301: if (ent->gid == (gid_t)-1)
302: ent->gid = sb.st_gid;
1.14 millert 303:
1.61 millert 304: DPRINTF(("%s <%d%s%s%s%s>: ", ent->log, ent->numlogs,
1.51 millert 305: (ent->flags & CE_COMPACT) ? "Z" : "",
306: (ent->flags & CE_BINARY) ? "B" : "",
1.61 millert 307: (ent->flags & CE_FOLLOW) ? "F" : "",
308: (ent->flags & CE_MONITOR) && monitormode ? "M" : ""));
1.79 millert 309: size = sizefile(&sb);
1.91 tedu 310: modhours = age_old_log(ent);
1.79 millert 311: if (ent->flags & CE_TRIMAT && !force) {
312: if (timenow < ent->trim_at ||
313: difftime(timenow, ent->trim_at) >= 60 * 60) {
314: DPRINTF(("--> will trim at %s",
315: ctime(&ent->trim_at)));
316: return;
317: } else if (ent->hours <= 0) {
318: DPRINTF(("--> time is up\n"));
1.63 millert 319: }
1.35 deraadt 320: }
1.79 millert 321: if (ent->size > 0)
322: DPRINTF(("size (KB): %.2f [%d] ", size / 1024.0,
323: (int)(ent->size / 1024)));
324: if (ent->hours > 0)
1.91 tedu 325: DPRINTF(("age (hr): %d [%d] ", modhours, ent->hours));
1.79 millert 326: if (monitormode && (ent->flags & CE_MONITOR) && domonitor(ent))
327: DPRINTF(("--> monitored\n"));
328: else if (!monitormode &&
329: (force || (ent->size > 0 && size >= ent->size) ||
330: (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) ||
1.91 tedu 331: (ent->hours > 0 && (modhours >= ent->hours || modhours < 0)
1.79 millert 332: && ((ent->flags & CE_BINARY) || size >= MIN_SIZE)))) {
333: DPRINTF(("--> trimming log....\n"));
334: if (noaction && !verbose)
335: printf("%s <%d%s%s%s>\n", ent->log,
336: ent->numlogs,
337: (ent->flags & CE_COMPACT) ? "Z" : "",
338: (ent->flags & CE_BINARY) ? "B" : "",
339: (ent->flags & CE_FOLLOW) ? "F" : "");
340: dotrim(ent);
341: ent->flags |= CE_ROTATED;
342: } else
343: DPRINTF(("--> skipping\n"));
1.1 deraadt 344: }
345:
1.30 millert 346: /* Run the specified command */
347: void
1.48 millert 348: run_command(char *cmd)
1.30 millert 349: {
350: if (noaction)
1.55 millert 351: (void)printf("run %s\n", cmd);
1.30 millert 352: else
353: system(cmd);
354: }
355:
356: /* Send a signal to the pid specified by pidfile */
1.26 millert 357: void
1.48 millert 358: send_signal(char *pidfile, int signal)
1.26 millert 359: {
1.80 deraadt 360: char line[BUFSIZ], *ep, *err;
1.48 millert 361: pid_t pid;
1.80 deraadt 362: long lval;
1.48 millert 363: FILE *f;
1.26 millert 364:
1.35 deraadt 365: if ((f = fopen(pidfile, "r")) == NULL) {
1.26 millert 366: warn("can't open %s", pidfile);
367: return;
368: }
369:
1.48 millert 370: pid = 0;
1.42 millert 371: errno = 0;
372: err = NULL;
1.40 deraadt 373: if (fgets(line, sizeof(line), f)) {
1.69 millert 374: lval = strtol(line, &ep, 10);
1.41 marc 375: if (line[0] == '\0' || (*ep != '\0' && *ep != '\n'))
1.40 deraadt 376: err = "invalid number in";
1.69 millert 377: else if (lval < 0 || (errno == ERANGE && lval == LONG_MAX))
1.40 deraadt 378: err = "out of range number in";
1.69 millert 379: else if (lval == 0)
1.40 deraadt 380: err = "no number in";
1.69 millert 381: else if (lval < MIN_PID)
1.40 deraadt 382: err = "preposterous process number in";
383: else
1.69 millert 384: pid = (pid_t)lval;
1.42 millert 385: } else {
386: if (errno == 0)
387: err = "empty";
388: else
389: err = "error reading";
1.40 deraadt 390: }
1.26 millert 391: (void)fclose(f);
392:
1.40 deraadt 393: if (err)
394: warnx("%s pid file: %s", err, pidfile);
395: else if (noaction)
1.44 mpech 396: (void)printf("kill -%s %ld\n", sys_signame[signal], (long)pid);
1.30 millert 397: else if (kill(pid, signal))
1.88 nicm 398: warnx("warning - could not send SIG%s to PID from pid file %s",
399: sys_signame[signal], pidfile);
1.26 millert 400: }
401:
1.25 millert 402: void
1.48 millert 403: parse_args(int argc, char **argv)
1.1 deraadt 404: {
1.102 bluhm 405: struct timeval now;
406: struct tm *tm;
407: size_t l;
1.80 deraadt 408: char *p;
1.48 millert 409: int ch;
1.1 deraadt 410:
1.102 bluhm 411: gettimeofday(&now, NULL);
412: timenow = now.tv_sec;
413: tm = gmtime(&now.tv_sec);
414: l = strftime(daytime, sizeof(daytime), "%FT%T", tm);
415: snprintf(daytime + l, sizeof(daytime) - l, ".%03ldZ",
416: now.tv_usec / 1000);
1.1 deraadt 417:
1.35 deraadt 418: /* Let's get our hostname */
419: (void)gethostname(hostname, sizeof(hostname));
1.1 deraadt 420:
421: /* Truncate domain */
1.48 millert 422: if ((p = strchr(hostname, '.')) != NULL)
1.1 deraadt 423: *p = '\0';
424:
1.52 millert 425: while ((ch = getopt(argc, argv, "Fmnrva:f:")) != -1) {
1.48 millert 426: switch (ch) {
1.51 millert 427: case 'a':
428: arcdir = optarg;
429: break;
1.35 deraadt 430: case 'n':
1.94 deraadt 431: noaction = 1; /* This implies needroot as off */
1.35 deraadt 432: /* fall through */
433: case 'r':
434: needroot = 0;
435: break;
436: case 'v':
1.94 deraadt 437: verbose = 1;
1.35 deraadt 438: break;
439: case 'f':
440: conf = optarg;
441: break;
1.10 downsj 442: case 'm':
1.94 deraadt 443: monitormode = 1;
1.10 downsj 444: break;
1.52 millert 445: case 'F':
1.94 deraadt 446: force = 1;
1.52 millert 447: break;
1.35 deraadt 448: default:
449: usage();
450: }
451: }
1.52 millert 452: if (monitormode && force)
453: errx(1, "cannot specify both -m and -F flags");
1.9 downsj 454: }
1.1 deraadt 455:
1.25 millert 456: void
1.48 millert 457: usage(void)
1.1 deraadt 458: {
1.25 millert 459: extern const char *__progname;
460:
1.52 millert 461: (void)fprintf(stderr, "usage: %s [-Fmnrv] [-a directory] "
1.53 millert 462: "[-f config_file] [log ...]\n", __progname);
1.14 millert 463: exit(1);
1.1 deraadt 464: }
465:
1.52 millert 466: /*
1.103 jca 467: * Parse a configuration file and build a linked list of all the logs
1.1 deraadt 468: * to process
469: */
1.105 jca 470: int
1.103 jca 471: parse_file(struct entrylist *list, int *nentries)
1.1 deraadt 472: {
1.63 millert 473: char line[BUFSIZ], *parse, *q, *errline, *group, *tmp, *ep;
1.103 jca 474: struct conf_entry *working;
1.51 millert 475: struct stat sb;
1.105 jca 476: int lineno = 0;
477: int ret = 0;
1.80 deraadt 478: FILE *f;
479: long l;
1.1 deraadt 480:
1.35 deraadt 481: if (strcmp(conf, "-") == 0)
482: f = stdin;
1.48 millert 483: else if ((f = fopen(conf, "r")) == NULL)
484: err(1, "can't open %s", conf);
1.11 downsj 485:
1.28 millert 486: *nentries = 0;
1.105 jca 487:
488: nextline:
489: while (fgets(line, sizeof(line), f) != NULL) {
490: lineno++;
1.48 millert 491: tmp = sob(line);
1.54 millert 492: if (*tmp == '\0' || *tmp == '#')
1.35 deraadt 493: continue;
1.48 millert 494: errline = strdup(tmp);
1.11 downsj 495: if (errline == NULL)
1.106 jca 496: err(1, NULL);
1.103 jca 497: working = calloc(1, sizeof(*working));
498: if (working == NULL)
1.106 jca 499: err(1, NULL);
1.1 deraadt 500:
1.60 millert 501: q = parse = missing_field(sob(line), errline, lineno);
1.35 deraadt 502: *(parse = son(line)) = '\0';
503: working->log = strdup(q);
1.11 downsj 504: if (working->log == NULL)
1.106 jca 505: err(1, NULL);
1.1 deraadt 506:
1.51 millert 507: if ((working->logbase = strrchr(working->log, '/')) != NULL)
508: working->logbase++;
509:
1.60 millert 510: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 511: *(parse = son(parse)) = '\0';
1.63 millert 512: if ((group = strchr(q, ':')) != NULL ||
513: (group = strrchr(q, '.')) != NULL) {
1.25 millert 514: *group++ = '\0';
1.109 millert 515: if (*q == '\0') {
1.50 millert 516: working->uid = (uid_t)-1;
1.109 millert 517: } else if (isnumberstr(q)) {
518: working->uid = atoi(q);
519: } else if (uid_from_user(q, &working->uid) == -1) {
520: warnx("%s:%d: unknown user %s --> skipping",
521: conf, lineno, q);
522: ret = 1;
523: goto nextline;
524: }
1.107 jca 525:
1.25 millert 526: q = group;
1.109 millert 527: if (*q == '\0') {
1.50 millert 528: working->gid = (gid_t)-1;
1.109 millert 529: } else if (isnumberstr(q)) {
530: working->gid = atoi(q);
531: } else if (gid_from_group(q, &working->gid) == -1) {
532: warnx("%s:%d: unknown group %s --> skipping",
533: conf, lineno, q);
534: ret = 1;
535: goto nextline;
536: }
1.107 jca 537:
1.60 millert 538: q = parse = missing_field(sob(++parse), errline, lineno);
1.25 millert 539: *(parse = son(parse)) = '\0';
1.50 millert 540: } else {
541: working->uid = (uid_t)-1;
542: working->gid = (gid_t)-1;
543: }
1.1 deraadt 544:
1.77 millert 545: l = strtol(q, &ep, 8);
1.105 jca 546: if (*ep != '\0' || l < 0 || l > ALLPERMS) {
547: warnx("%s:%d: bad permissions: %s --> skipping", conf,
548: lineno, q);
549: ret = 1;
550: goto nextline;
551: }
1.77 millert 552: working->permissions = (mode_t)l;
1.1 deraadt 553:
1.60 millert 554: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 555: *(parse = son(parse)) = '\0';
1.77 millert 556: l = strtol(q, &ep, 10);
1.105 jca 557: if (*ep != '\0' || l < 0 || l >= INT_MAX) {
558: warnx("%s:%d: bad number: %s --> skipping", conf,
559: lineno, q);
560: ret = 1;
561: goto nextline;
562: }
1.77 millert 563: working->numlogs = (int)l;
1.1 deraadt 564:
1.60 millert 565: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 566: *(parse = son(parse)) = '\0';
1.92 deraadt 567: if (isdigit((unsigned char)*q))
1.58 millert 568: working->size = atoi(q) * 1024;
1.35 deraadt 569: else
570: working->size = -1;
1.107 jca 571:
1.63 millert 572: working->flags = 0;
1.60 millert 573: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 574: *(parse = son(parse)) = '\0';
1.70 millert 575: l = strtol(q, &ep, 10);
1.105 jca 576: if (l < 0 || l >= INT_MAX) {
577: warnx("%s:%d: interval out of range: %s --> skipping",
578: conf, lineno, q);
579: ret = 1;
580: goto nextline;
581: }
1.70 millert 582: working->hours = (int)l;
1.63 millert 583: switch (*ep) {
584: case '\0':
585: break;
586: case '@':
587: working->trim_at = parse8601(ep + 1);
1.105 jca 588: if (working->trim_at == (time_t) - 1) {
589: warnx("%s:%d: bad time: %s --> skipping", conf,
590: lineno, q);
591: ret = 1;
592: goto nextline;
593: }
1.63 millert 594: working->flags |= CE_TRIMAT;
595: break;
596: case '$':
597: working->trim_at = parseDWM(ep + 1);
1.105 jca 598: if (working->trim_at == (time_t) - 1) {
599: warnx("%s:%d: bad time: %s --> skipping", conf,
600: lineno, q);
601: ret = 1;
602: goto nextline;
603: }
1.63 millert 604: working->flags |= CE_TRIMAT;
605: break;
606: case '*':
607: if (q == ep)
608: break;
609: /* FALLTHROUGH */
610: default:
1.105 jca 611: warnx("%s:%d: bad interval/at: %s --> skipping", conf,
612: lineno, q);
613: ret = 1;
614: goto nextline;
1.63 millert 615: }
1.1 deraadt 616:
1.35 deraadt 617: q = sob(++parse); /* Optional field */
1.32 millert 618: if (*q == 'Z' || *q == 'z' || *q == 'B' || *q == 'b' ||
619: *q == 'M' || *q == 'm') {
620: *(parse = son(q)) = '\0';
621: while (*q) {
622: switch (*q) {
623: case 'Z':
624: case 'z':
625: working->flags |= CE_COMPACT;
626: break;
627: case 'B':
628: case 'b':
629: working->flags |= CE_BINARY;
630: break;
631: case 'M':
632: case 'm':
633: working->flags |= CE_MONITOR;
1.45 wcobb 634: break;
635: case 'F':
636: case 'f':
637: working->flags |= CE_FOLLOW;
1.32 millert 638: break;
639: default:
1.105 jca 640: warnx("%s:%d: illegal flag: `%c'"
641: " --> skipping",
1.60 millert 642: conf, lineno, *q);
1.105 jca 643: ret = 1;
644: goto nextline;
1.32 millert 645: }
646: q++;
647: }
648: } else
1.40 deraadt 649: parse--; /* no flags so undo */
1.10 downsj 650:
1.14 millert 651: working->pidfile = PIDFILE;
1.30 millert 652: working->signal = SIGHUP;
653: working->runcmd = NULL;
1.61 millert 654: working->whom = NULL;
1.30 millert 655: for (;;) {
656: q = parse = sob(++parse); /* Optional field */
657: if (q == NULL || *q == '\0')
658: break;
659: if (*q == '/') {
660: *(parse = son(parse)) = '\0';
1.105 jca 661: if (strlen(q) >= PATH_MAX) {
662: warnx("%s:%d: pathname too long: %s"
663: " --> skipping",
1.60 millert 664: conf, lineno, q);
1.105 jca 665: ret = 1;
666: goto nextline;
667: }
1.30 millert 668: working->pidfile = strdup(q);
669: if (working->pidfile == NULL)
1.106 jca 670: err(1, NULL);
1.30 millert 671: } else if (*q == '"' && (tmp = strchr(q + 1, '"'))) {
672: *(parse = tmp) = '\0';
1.56 millert 673: if (*++q != '\0') {
674: working->runcmd = strdup(q);
675: if (working->runcmd == NULL)
1.106 jca 676: err(1, NULL);
1.56 millert 677: }
1.55 millert 678: working->pidfile = NULL;
679: working->signal = -1;
1.30 millert 680: } else if (strncmp(q, "SIG", 3) == 0) {
681: int i;
682:
683: *(parse = son(parse)) = '\0';
684: for (i = 1; i < NSIG; i++) {
685: if (!strcmp(sys_signame[i], q + 3)) {
686: working->signal = i;
687: break;
688: }
689: }
1.105 jca 690: if (i == NSIG) {
691: warnx("%s:%d: unknown signal: %s"
692: " --> skipping",
1.60 millert 693: conf, lineno, q);
1.105 jca 694: ret = 1;
695: goto nextline;
696: }
1.61 millert 697: } else if (working->flags & CE_MONITOR) {
698: *(parse = son(parse)) = '\0';
699: working->whom = strdup(q);
700: if (working->whom == NULL)
1.106 jca 701: err(1, NULL);
1.105 jca 702: } else {
703: warnx("%s:%d: unrecognized field: %s"
704: " --> skipping",
1.60 millert 705: conf, lineno, q);
1.105 jca 706: ret = 1;
707: goto nextline;
708: }
1.14 millert 709: }
1.51 millert 710: free(errline);
711:
1.105 jca 712: if ((working->flags & CE_MONITOR) && working->whom == NULL) {
713: warnx("%s:%d: missing monitor notification field"
714: " --> skipping",
1.61 millert 715: conf, lineno);
1.105 jca 716: ret = 1;
717: goto nextline;
718: }
1.61 millert 719:
1.51 millert 720: /* If there is an arcdir, set working->backdir. */
721: if (arcdir != NULL && working->logbase != NULL) {
722: if (*arcdir == '/') {
723: /* Fully qualified arcdir */
724: working->backdir = arcdir;
725: } else {
726: /* arcdir is relative to log's parent dir */
727: *(working->logbase - 1) = '\0';
728: if ((asprintf(&working->backdir, "%s/%s",
729: working->log, arcdir)) == -1)
1.106 jca 730: err(1, NULL);
1.51 millert 731: *(working->logbase - 1) = '/';
732: }
733: /* Ignore arcdir if it doesn't exist. */
734: if (stat(working->backdir, &sb) != 0 ||
735: !S_ISDIR(sb.st_mode)) {
736: if (working->backdir != arcdir)
737: free(working->backdir);
738: working->backdir = NULL;
739: }
740: } else
741: working->backdir = NULL;
1.25 millert 742:
1.93 deraadt 743: /* Make sure we can't oflow PATH_MAX */
1.51 millert 744: if (working->backdir != NULL) {
745: if (snprintf(line, sizeof(line), "%s/%s.%d%s",
746: working->backdir, working->logbase,
1.105 jca 747: working->numlogs, COMPRESS_POSTFIX) >= PATH_MAX) {
748: warnx("%s:%d: pathname too long: %s"
749: " --> skipping", conf, lineno, q);
750: ret = 1;
751: goto nextline;
752: }
1.51 millert 753: } else {
754: if (snprintf(line, sizeof(line), "%s.%d%s",
755: working->log, working->numlogs, COMPRESS_POSTFIX)
1.105 jca 756: >= PATH_MAX) {
757: warnx("%s:%d: pathname too long: %s"
758: " --> skipping", conf, lineno,
759: working->log);
760: ret = 1;
761: goto nextline;
762: }
1.51 millert 763: }
1.103 jca 764: TAILQ_INSERT_TAIL(list, working, next);
765: (*nentries)++;
1.35 deraadt 766: }
767: (void)fclose(f);
1.105 jca 768: return (ret);
1.1 deraadt 769: }
770:
1.25 millert 771: char *
1.60 millert 772: missing_field(char *p, char *errline, int lineno)
1.1 deraadt 773: {
1.60 millert 774: if (p == NULL || *p == '\0') {
775: warnx("%s:%d: missing field", conf, lineno);
1.35 deraadt 776: fputs(errline, stderr);
777: exit(1);
778: }
1.48 millert 779: return (p);
1.1 deraadt 780: }
781:
1.25 millert 782: void
1.81 millert 783: rotate(struct conf_entry *ent, const char *oldlog)
1.35 deraadt 784: {
1.93 deraadt 785: char file1[PATH_MAX], file2[PATH_MAX], *suffix;
1.87 schwarze 786: int numdays = ent->numlogs - 1;
787: int done = 0;
1.1 deraadt 788:
1.87 schwarze 789: /* Remove old logs */
790: do {
791: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
792: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog,
793: numdays, COMPRESS_POSTFIX);
794: if (noaction) {
795: printf("\trm -f %s %s\n", file1, file2);
796: done = access(file1, 0) && access(file2, 0);
797: } else {
798: done = unlink(file1) && unlink(file2);
799: }
800: numdays++;
801: } while (done == 0);
1.35 deraadt 802:
803: /* Move down log files */
1.87 schwarze 804: for (numdays = ent->numlogs - 2; numdays >= 0; numdays--) {
1.57 millert 805: /*
1.65 millert 806: * If both the compressed archive and the non-compressed archive
1.70 millert 807: * exist, we decide which to rotate based on the CE_COMPACT flag
1.57 millert 808: */
1.51 millert 809: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
1.57 millert 810: suffix = lstat_log(file1, sizeof(file1), ent->flags);
811: if (suffix == NULL)
812: continue;
813: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog,
814: numdays + 1, suffix);
815:
1.35 deraadt 816: if (noaction) {
1.57 millert 817: printf("\tmv %s %s\n", file1, file2);
818: printf("\tchmod %o %s\n", ent->permissions, file2);
1.79 millert 819: printf("\tchown %u:%u %s\n", ent->uid, ent->gid, file2);
1.35 deraadt 820: } else {
1.57 millert 821: if (rename(file1, file2))
822: warn("can't mv %s to %s", file1, file2);
823: if (chmod(file2, ent->permissions))
824: warn("can't chmod %s", file2);
1.79 millert 825: if (chown(file2, ent->uid, ent->gid))
826: warn("can't chown %s", file2);
1.35 deraadt 827: }
828: }
1.81 millert 829: }
830:
831: void
832: dotrim(struct conf_entry *ent)
833: {
1.93 deraadt 834: char file1[PATH_MAX], file2[PATH_MAX], oldlog[PATH_MAX];
1.81 millert 835: int fd;
836:
837: /* Is there a separate backup dir? */
838: if (ent->backdir != NULL)
839: snprintf(oldlog, sizeof(oldlog), "%s/%s", ent->backdir,
840: ent->logbase);
841: else
842: strlcpy(oldlog, ent->log, sizeof(oldlog));
843:
844: if (ent->numlogs > 0)
845: rotate(ent, oldlog);
1.51 millert 846: if (!noaction && !(ent->flags & CE_BINARY))
1.81 millert 847: (void)log_trim(ent->log);
1.1 deraadt 848:
1.51 millert 849: (void)snprintf(file2, sizeof(file2), "%s.XXXXXXXXXX", ent->log);
1.35 deraadt 850: if (noaction) {
1.50 millert 851: printf("\tmktemp %s\n", file2);
1.35 deraadt 852: } else {
853: if ((fd = mkstemp(file2)) < 0)
1.26 millert 854: err(1, "can't start '%s' log", file2);
1.51 millert 855: if (fchmod(fd, ent->permissions))
1.26 millert 856: err(1, "can't chmod '%s' log file", file2);
1.79 millert 857: if (fchown(fd, ent->uid, ent->gid))
858: err(1, "can't chown '%s' log file", file2);
1.35 deraadt 859: (void)close(fd);
1.26 millert 860: /* Add status message */
1.51 millert 861: if (!(ent->flags & CE_BINARY) && log_trim(file2))
1.26 millert 862: err(1, "can't add status message to log '%s'", file2);
1.35 deraadt 863: }
1.26 millert 864:
1.51 millert 865: if (ent->numlogs == 0) {
1.5 deraadt 866: if (noaction)
1.51 millert 867: printf("\trm %s\n", ent->log);
868: else if (unlink(ent->log))
869: warn("can't rm %s", ent->log);
1.5 deraadt 870: } else {
1.57 millert 871: (void)snprintf(file1, sizeof(file1), "%s.0", oldlog);
1.78 millert 872: if (noaction) {
1.51 millert 873: printf("\tmv %s to %s\n", ent->log, file1);
1.78 millert 874: printf("\tchmod %o %s\n", ent->permissions, file1);
1.79 millert 875: printf("\tchown %u:%u %s\n", ent->uid, ent->gid, file1);
1.78 millert 876: } else if (movefile(ent->log, file1, ent->uid, ent->gid,
1.74 millert 877: ent->permissions))
1.59 millert 878: warn("can't mv %s to %s", ent->log, file1);
1.5 deraadt 879: }
880:
1.26 millert 881: /* Now move the new log file into place */
882: if (noaction)
1.51 millert 883: printf("\tmv %s to %s\n", file2, ent->log);
884: else if (rename(file2, ent->log))
1.59 millert 885: warn("can't mv %s to %s", file2, ent->log);
1.1 deraadt 886: }
887:
888: /* Log the fact that the logs were turned over */
1.25 millert 889: int
1.48 millert 890: log_trim(char *log)
1.1 deraadt 891: {
1.35 deraadt 892: FILE *f;
1.25 millert 893:
1.35 deraadt 894: if ((f = fopen(log, "a")) == NULL)
1.48 millert 895: return (-1);
1.44 mpech 896: (void)fprintf(f, "%s %s newsyslog[%ld]: logfile turned over\n",
897: daytime, hostname, (long)getpid());
1.35 deraadt 898: if (fclose(f) == EOF)
899: err(1, "log_trim: fclose");
1.48 millert 900: return (0);
1.1 deraadt 901: }
902:
1.16 millert 903: /* Fork off compress or gzip to compress the old log file */
1.25 millert 904: void
1.51 millert 905: compress_log(struct conf_entry *ent)
1.1 deraadt 906: {
1.93 deraadt 907: char *base, tmp[PATH_MAX];
1.48 millert 908: pid_t pid;
1.51 millert 909:
910: if (ent->backdir != NULL)
911: snprintf(tmp, sizeof(tmp), "%s/%s.0", ent->backdir,
912: ent->logbase);
913: else
914: snprintf(tmp, sizeof(tmp), "%s.0", ent->log);
915:
1.27 millert 916: if ((base = strrchr(COMPRESS, '/')) == NULL)
917: base = COMPRESS;
918: else
919: base++;
920: if (noaction) {
1.51 millert 921: printf("%s %s\n", base, tmp);
1.27 millert 922: return;
923: }
1.35 deraadt 924: pid = fork();
925: if (pid < 0) {
1.11 downsj 926: err(1, "fork");
1.50 millert 927: } else if (pid == 0) {
1.37 deraadt 928: (void)execl(COMPRESS, base, "-f", tmp, (char *)NULL);
1.16 millert 929: warn(COMPRESS);
930: _exit(1);
1.35 deraadt 931: }
1.1 deraadt 932: }
933:
1.89 lum 934: /* Return size in bytes of a file */
1.58 millert 935: off_t
1.79 millert 936: sizefile(struct stat *sb)
1.1 deraadt 937: {
1.58 millert 938: /* For sparse files, return the size based on number of blocks used. */
1.79 millert 939: if (sb->st_size / DEV_BSIZE > sb->st_blocks)
940: return (sb->st_blocks * DEV_BSIZE);
1.58 millert 941: else
1.79 millert 942: return (sb->st_size);
1.1 deraadt 943: }
944:
1.25 millert 945: /* Return the age (in hours) of old log file (file.0), or -1 if none */
946: int
1.51 millert 947: age_old_log(struct conf_entry *ent)
1.1 deraadt 948: {
1.93 deraadt 949: char file[PATH_MAX];
1.35 deraadt 950: struct stat sb;
1.1 deraadt 951:
1.51 millert 952: if (ent->backdir != NULL)
1.57 millert 953: (void)snprintf(file, sizeof(file), "%s/%s.0", ent->backdir,
954: ent->logbase);
955: else
956: (void)snprintf(file, sizeof(file), "%s.0", ent->log);
957: if (ent->flags & CE_COMPACT) {
958: if (stat_suffix(file, sizeof(file), COMPRESS_POSTFIX, &sb,
959: stat) < 0 && stat(file, &sb) < 0)
960: return (-1);
961: } else {
962: if (stat(file, &sb) < 0 && stat_suffix(file, sizeof(file),
963: COMPRESS_POSTFIX, &sb, stat) < 0)
964: return (-1);
965: }
1.48 millert 966: return ((int)(timenow - sb.st_mtime + 1800) / 3600);
1.1 deraadt 967: }
968:
969: /* Skip Over Blanks */
1.25 millert 970: char *
1.48 millert 971: sob(char *p)
1.1 deraadt 972: {
1.84 tedu 973: if (p == NULL)
974: return(p);
1.92 deraadt 975: while (isspace((unsigned char)*p))
1.35 deraadt 976: p++;
1.48 millert 977: return (p);
1.1 deraadt 978: }
979:
980: /* Skip Over Non-Blanks */
1.25 millert 981: char *
1.48 millert 982: son(char *p)
1.1 deraadt 983: {
1.92 deraadt 984: while (p && *p && !isspace((unsigned char)*p))
1.35 deraadt 985: p++;
1.48 millert 986: return (p);
1.1 deraadt 987: }
988:
989: /* Check if string is actually a number */
1.25 millert 990: int
1.48 millert 991: isnumberstr(char *string)
1.1 deraadt 992: {
1.35 deraadt 993: while (*string) {
1.92 deraadt 994: if (!isdigit((unsigned char)*string++))
1.48 millert 995: return (0);
1.35 deraadt 996: }
1.48 millert 997: return (1);
1.10 downsj 998: }
999:
1.61 millert 1000: int
1001: domonitor(struct conf_entry *ent)
1.10 downsj 1002: {
1.93 deraadt 1003: char fname[PATH_MAX], *flog, *p, *rb = NULL;
1.10 downsj 1004: struct stat sb, tsb;
1.80 deraadt 1005: off_t osize;
1.10 downsj 1006: FILE *fp;
1007: int rd;
1008:
1.61 millert 1009: if (stat(ent->log, &sb) < 0)
1010: return (0);
1011:
1012: if (noaction) {
1013: if (!verbose)
1014: printf("%s: monitored\n", ent->log);
1015: return (1);
1016: }
1.10 downsj 1017:
1.61 millert 1018: flog = strdup(ent->log);
1.11 downsj 1019: if (flog == NULL)
1.106 jca 1020: err(1, NULL);
1.11 downsj 1021:
1.10 downsj 1022: for (p = flog; *p != '\0'; p++) {
1023: if (*p == '/')
1024: *p = '_';
1025: }
1.48 millert 1026: snprintf(fname, sizeof(fname), "%s/newsyslog.%s.size",
1.35 deraadt 1027: STATS_DIR, flog);
1.10 downsj 1028:
1029: /* ..if it doesn't exist, simply record the current size. */
1030: if ((sb.st_size == 0) || stat(fname, &tsb) < 0)
1031: goto update;
1032:
1033: fp = fopen(fname, "r");
1034: if (fp == NULL) {
1.34 millert 1035: warn("%s", fname);
1.10 downsj 1036: goto cleanup;
1037: }
1.70 millert 1038: if (fscanf(fp, "%lld\n", &osize) != 1) {
1.10 downsj 1039: fclose(fp);
1040: goto update;
1041: }
1042:
1043: fclose(fp);
1044:
1045: /* If the file is smaller, mark the entire thing as changed. */
1046: if (sb.st_size < osize)
1047: osize = 0;
1048:
1049: /* Now see if current size is larger. */
1050: if (sb.st_size > osize) {
1.95 deraadt 1051: rb = malloc(sb.st_size - osize);
1.11 downsj 1052: if (rb == NULL)
1.106 jca 1053: err(1, NULL);
1.10 downsj 1054:
1055: /* Open logfile, seek. */
1.61 millert 1056: fp = fopen(ent->log, "r");
1.10 downsj 1057: if (fp == NULL) {
1.61 millert 1058: warn("%s", ent->log);
1.10 downsj 1059: goto cleanup;
1060: }
1061: fseek(fp, osize, SEEK_SET);
1062: rd = fread(rb, 1, sb.st_size - osize, fp);
1063: if (rd < 1) {
1.11 downsj 1064: warn("fread");
1.10 downsj 1065: fclose(fp);
1066: goto cleanup;
1067: }
1.108 jca 1068: fclose(fp);
1.107 jca 1069:
1.10 downsj 1070: /* Send message. */
1.108 jca 1071: fp = popen(SENDMAIL " -t", "w");
1.10 downsj 1072: if (fp == NULL) {
1.108 jca 1073: warn("popen");
1.10 downsj 1074: goto cleanup;
1075: }
1.83 deraadt 1076: fprintf(fp, "Auto-Submitted: auto-generated\n");
1.10 downsj 1077: fprintf(fp, "To: %s\nSubject: LOGFILE NOTIFICATION: %s\n\n\n",
1.61 millert 1078: ent->whom, ent->log);
1.10 downsj 1079: fwrite(rb, 1, rd, fp);
1080: fputs("\n\n", fp);
1081:
1.48 millert 1082: pclose(fp);
1.10 downsj 1083: }
1084: update:
1085: /* Reopen for writing and update file. */
1086: fp = fopen(fname, "w");
1087: if (fp == NULL) {
1.34 millert 1088: warn("%s", fname);
1.10 downsj 1089: goto cleanup;
1090: }
1.70 millert 1091: fprintf(fp, "%lld\n", (long long)sb.st_size);
1.10 downsj 1092: fclose(fp);
1093:
1094: cleanup:
1095: free(flog);
1.99 mmcc 1096: free(rb);
1.61 millert 1097: return (1);
1.10 downsj 1098: }
1099:
1.82 deraadt 1100: /* ARGSUSED */
1.25 millert 1101: void
1.48 millert 1102: child_killer(int signo)
1.16 millert 1103: {
1.38 deraadt 1104: int save_errno = errno;
1.16 millert 1105: int status;
1106:
1107: while (waitpid(-1, &status, WNOHANG) > 0)
1108: ;
1.38 deraadt 1109: errno = save_errno;
1.57 millert 1110: }
1111:
1112: int
1.73 deraadt 1113: stat_suffix(char *file, size_t size, char *suffix, struct stat *sp,
1114: int (*func)(const char *, struct stat *))
1.57 millert 1115: {
1116: size_t n;
1117:
1118: n = strlcat(file, suffix, size);
1119: if (n < size && func(file, sp) == 0)
1120: return (0);
1121: file[n - strlen(suffix)] = '\0';
1122: return (-1);
1123: }
1124:
1125: /*
1.65 millert 1126: * lstat() a log, possibly appending a suffix; order is based on flags.
1.57 millert 1127: * Returns the suffix appended (may be empty string) or NULL if no file.
1128: */
1129: char *
1130: lstat_log(char *file, size_t size, int flags)
1131: {
1132: struct stat sb;
1133:
1134: if (flags & CE_COMPACT) {
1135: if (stat_suffix(file, size, COMPRESS_POSTFIX, &sb, lstat) == 0)
1136: return (COMPRESS_POSTFIX);
1137: if (lstat(file, &sb) == 0)
1138: return ("");
1139: } else {
1140: if (lstat(file, &sb) == 0)
1141: return ("");
1142: if (stat_suffix(file, size, COMPRESS_POSTFIX, &sb, lstat) == 0)
1143: return (COMPRESS_POSTFIX);
1144:
1145: }
1146: return (NULL);
1.63 millert 1147: }
1148:
1149: /*
1150: * Parse a limited subset of ISO 8601. The specific format is as follows:
1151: *
1152: * [CC[YY[MM[DD]]]][THH[MM[SS]]] (where `T' is the literal letter)
1153: *
1154: * We don't accept a timezone specification; missing fields (including timezone)
1155: * are defaulted to the current date but time zero.
1156: */
1157: time_t
1158: parse8601(char *s)
1159: {
1.80 deraadt 1160: struct tm tm, *tmp;
1.63 millert 1161: char *t;
1.70 millert 1162: long l;
1.63 millert 1163:
1164: tmp = localtime(&timenow);
1165: tm = *tmp;
1166:
1167: tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
1168:
1.70 millert 1169: l = strtol(s, &t, 10);
1170: if (l < 0 || l >= INT_MAX || (*t != '\0' && *t != 'T'))
1.63 millert 1171: return (-1);
1172:
1173: /*
1174: * Now t points either to the end of the string (if no time was
1175: * provided) or to the letter `T' which separates date and time in
1176: * ISO 8601. The pointer arithmetic is the same for either case.
1177: */
1178: switch (t - s) {
1179: case 8:
1.70 millert 1180: tm.tm_year = ((l / 1000000) - 19) * 100;
1181: l = l % 1000000;
1.63 millert 1182: case 6:
1183: tm.tm_year -= tm.tm_year % 100;
1.70 millert 1184: tm.tm_year += l / 10000;
1185: l = l % 10000;
1.63 millert 1186: case 4:
1.70 millert 1187: tm.tm_mon = (l / 100) - 1;
1188: l = l % 100;
1.63 millert 1189: case 2:
1.70 millert 1190: tm.tm_mday = l;
1.63 millert 1191: case 0:
1192: break;
1193: default:
1194: return (-1);
1195: }
1196:
1197: /* sanity check */
1.80 deraadt 1198: if (tm.tm_year < 70 || tm.tm_mon < 0 || tm.tm_mon > 12 ||
1199: tm.tm_mday < 1 || tm.tm_mday > 31)
1.63 millert 1200: return (-1);
1201:
1202: if (*t != '\0') {
1203: s = ++t;
1.70 millert 1204: l = strtol(s, &t, 10);
1.92 deraadt 1205: if (l < 0 || l >= INT_MAX ||
1206: (*t != '\0' && !isspace((unsigned char)*t)))
1.63 millert 1207: return (-1);
1208:
1209: switch (t - s) {
1210: case 6:
1.70 millert 1211: tm.tm_sec = l % 100;
1212: l /= 100;
1.63 millert 1213: case 4:
1.70 millert 1214: tm.tm_min = l % 100;
1215: l /= 100;
1.63 millert 1216: case 2:
1.70 millert 1217: tm.tm_hour = l;
1.63 millert 1218: case 0:
1219: break;
1220: default:
1221: return (-1);
1222: }
1223:
1224: /* sanity check */
1.80 deraadt 1225: if (tm.tm_sec < 0 || tm.tm_sec > 60 || tm.tm_min < 0 ||
1226: tm.tm_min > 59 || tm.tm_hour < 0 || tm.tm_hour > 23)
1.63 millert 1227: return (-1);
1228: }
1229: return (mktime(&tm));
1230: }
1231:
1232: /*-
1233: * Parse a cyclic time specification, the format is as follows:
1234: *
1235: * [Dhh] or [Wd[Dhh]] or [Mdd[Dhh]]
1236: *
1237: * to rotate a logfile cyclic at
1238: *
1239: * - every day (D) within a specific hour (hh) (hh = 0...23)
1240: * - once a week (W) at a specific day (d) OR (d = 0..6, 0 = Sunday)
1241: * - once a month (M) at a specific day (d) (d = 1..31,l|L)
1242: *
1243: * We don't accept a timezone specification; missing fields
1244: * are defaulted to the current date but time zero.
1245: */
1246: time_t
1247: parseDWM(char *s)
1248: {
1.80 deraadt 1249: static int mtab[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
1250: int WMseen = 0, Dseen = 0, nd;
1251: struct tm tm, *tmp;
1.63 millert 1252: char *t;
1253: long l;
1254:
1255: tmp = localtime(&timenow);
1256: tm = *tmp;
1257:
1258: /* set no. of days per month */
1259:
1260: nd = mtab[tm.tm_mon];
1261:
1262: if (tm.tm_mon == 1) {
1263: if (((tm.tm_year + 1900) % 4 == 0) &&
1264: ((tm.tm_year + 1900) % 100 != 0) &&
1265: ((tm.tm_year + 1900) % 400 == 0)) {
1266: nd++; /* leap year, 29 days in february */
1267: }
1268: }
1269: tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
1270:
1271: for (;;) {
1272: switch (*s) {
1273: case 'D':
1274: if (Dseen)
1275: return (-1);
1276: Dseen++;
1277: s++;
1278: l = strtol(s, &t, 10);
1279: if (l < 0 || l > 23)
1280: return (-1);
1281: tm.tm_hour = l;
1282: break;
1283:
1284: case 'W':
1285: if (WMseen)
1286: return (-1);
1287: WMseen++;
1288: s++;
1289: l = strtol(s, &t, 10);
1290: if (l < 0 || l > 6)
1291: return (-1);
1292: if (l != tm.tm_wday) {
1293: int save;
1294:
1295: if (l < tm.tm_wday) {
1296: save = 6 - tm.tm_wday;
1297: save += (l + 1);
1298: } else {
1299: save = l - tm.tm_wday;
1300: }
1301:
1302: tm.tm_mday += save;
1303:
1304: if (tm.tm_mday > nd) {
1305: tm.tm_mon++;
1306: tm.tm_mday = tm.tm_mday - nd;
1307: }
1308: }
1309: break;
1310:
1311: case 'M':
1312: if (WMseen)
1313: return (-1);
1314: WMseen++;
1315: s++;
1.92 deraadt 1316: if (tolower((unsigned char)*s) == 'l') {
1.63 millert 1317: tm.tm_mday = nd;
1318: s++;
1319: t = s;
1320: } else {
1321: l = strtol(s, &t, 10);
1322: if (l < 1 || l > 31)
1323: return (-1);
1324:
1325: if (l > nd)
1326: return (-1);
1.90 phessler 1327: if (l < tm.tm_mday)
1328: tm.tm_mon++;
1.63 millert 1329: tm.tm_mday = l;
1330: }
1331: break;
1332:
1333: default:
1334: return (-1);
1335: break;
1336: }
1337:
1.92 deraadt 1338: if (*t == '\0' || isspace((unsigned char)*t))
1.63 millert 1339: break;
1340: else
1341: s = t;
1342: }
1343: return (mktime(&tm));
1.74 millert 1344: }
1345:
1346: /*
1.85 millert 1347: * Move a file using rename(2) if possible and copying if not.
1.74 millert 1348: */
1349: int
1.77 millert 1350: movefile(char *from, char *to, uid_t owner_uid, gid_t group_gid, mode_t perm)
1.74 millert 1351: {
1352: FILE *src, *dst;
1353: int i;
1354:
1355: /* try rename(2) first */
1.78 millert 1356: if (rename(from, to) == 0) {
1357: if (chmod(to, perm))
1358: warn("can't chmod %s", to);
1.79 millert 1359: if (chown(to, owner_uid, group_gid))
1360: warn("can't chown %s", to);
1.78 millert 1361: return (0);
1362: } else if (errno != EXDEV)
1363: return (-1);
1.74 millert 1364:
1365: /* different filesystem, have to copy the file */
1366: if ((src = fopen(from, "r")) == NULL)
1367: err(1, "can't fopen %s for reading", from);
1368: if ((dst = fopen(to, "w")) == NULL)
1369: err(1, "can't fopen %s for writing", to);
1370: if (fchmod(fileno(dst), perm))
1371: err(1, "can't fchmod %s", to);
1.79 millert 1372: if (fchown(fileno(dst), owner_uid, group_gid))
1373: err(1, "can't fchown %s", to);
1.74 millert 1374:
1375: while ((i = getc(src)) != EOF) {
1376: if ((putc(i, dst)) == EOF)
1377: err(1, "error writing to %s", to);
1378: }
1379:
1380: if (ferror(src))
1381: err(1, "error reading from %s", from);
1382: if ((fclose(src)) != 0)
1.85 millert 1383: err(1, "can't fclose %s", from);
1384: if ((fclose(dst)) != 0)
1.74 millert 1385: err(1, "can't fclose %s", to);
1386: if ((unlink(from)) != 0)
1387: err(1, "can't unlink %s", from);
1388:
1389: return (0);
1.1 deraadt 1390: }
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