Annotation of src/usr.bin/newsyslog/newsyslog.c, Revision 1.96
1.96 ! benno 1: /* $OpenBSD: newsyslog.c,v 1.95 2015/08/20 22:32:41 deraadt Exp $ */
1.10 downsj 2:
3: /*
1.62 millert 4: * Copyright (c) 1999, 2002, 2003 Todd C. Miller <Todd.Miller@courtesan.com>
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:
74: #ifndef CONF
1.47 millert 75: #define CONF "/etc/newsyslog.conf" /* Configuration file */
1.1 deraadt 76: #endif
77: #ifndef PIDFILE
78: #define PIDFILE "/etc/syslog.pid"
79: #endif
80: #ifndef COMPRESS
1.47 millert 81: #define COMPRESS "/usr/bin/compress" /* File compression program */
1.1 deraadt 82: #endif
83: #ifndef COMPRESS_POSTFIX
84: #define COMPRESS_POSTFIX ".Z"
85: #endif
1.10 downsj 86: #ifndef STATS_DIR
87: #define STATS_DIR "/etc"
88: #endif
89: #ifndef SENDMAIL
90: #define SENDMAIL "/usr/lib/sendmail"
91: #endif
1.1 deraadt 92:
1.93 deraadt 93: #include <sys/param.h> /* DEV_BSIZE */
1.48 millert 94: #include <sys/stat.h>
1.9 downsj 95: #include <sys/time.h>
96: #include <sys/wait.h>
1.48 millert 97:
1.1 deraadt 98: #include <ctype.h>
1.48 millert 99: #include <err.h>
100: #include <errno.h>
1.9 downsj 101: #include <fcntl.h>
1.1 deraadt 102: #include <grp.h>
1.47 millert 103: #include <limits.h>
1.48 millert 104: #include <pwd.h>
105: #include <signal.h>
106: #include <stdio.h>
107: #include <stdlib.h>
108: #include <string.h>
1.68 millert 109: #include <time.h>
1.9 downsj 110: #include <unistd.h>
1.1 deraadt 111:
1.26 millert 112: #define CE_ROTATED 0x01 /* Log file has been rotated */
1.65 millert 113: #define CE_COMPACT 0x02 /* Compact the archived log files */
1.26 millert 114: #define CE_BINARY 0x04 /* Logfile is in binary, don't add */
1.10 downsj 115: /* status messages */
1.65 millert 116: #define CE_MONITOR 0x08 /* Monitor for changes */
1.45 wcobb 117: #define CE_FOLLOW 0x10 /* Follow symbolic links */
1.65 millert 118: #define CE_TRIMAT 0x20 /* Trim at a specific time */
1.35 deraadt 119:
1.49 millert 120: #define MIN_PID 4 /* Don't touch pids lower than this */
1.58 millert 121: #define MIN_SIZE 256 /* Don't rotate if smaller (in bytes) */
1.49 millert 122:
1.50 millert 123: #define DPRINTF(x) do { if (verbose) printf x ; } while (0)
124:
1.1 deraadt 125: struct conf_entry {
1.35 deraadt 126: char *log; /* Name of the log */
1.51 millert 127: char *logbase; /* Basename of the log */
128: char *backdir; /* Directory in which to store backups */
1.35 deraadt 129: uid_t uid; /* Owner of log */
130: gid_t gid; /* Group of log */
131: int numlogs; /* Number of logs to keep */
1.58 millert 132: off_t size; /* Size cutoff to trigger trimming the log */
1.35 deraadt 133: int hours; /* Hours between log trimming */
1.63 millert 134: time_t trim_at; /* Specific time at which to do trimming */
1.77 millert 135: mode_t permissions; /* File permissions on the log */
1.30 millert 136: int signal; /* Signal to send (defaults to SIGHUP) */
1.35 deraadt 137: int flags; /* Flags (CE_COMPACT & CE_BINARY) */
1.10 downsj 138: char *whom; /* Whom to notify if logfile changes */
1.65 millert 139: char *pidfile; /* Path to file containing pid to signal */
1.30 millert 140: char *runcmd; /* Command to run instead of sending a signal */
1.35 deraadt 141: struct conf_entry *next; /* Linked list pointer */
1.1 deraadt 142: };
143:
1.30 millert 144: struct pidinfo {
145: char *file;
146: int signal;
147: };
148:
1.52 millert 149: int verbose = 0; /* Print out what's going on */
150: int needroot = 1; /* Root privs are necessary */
151: int noaction = 0; /* Don't do anything, just show it */
1.33 millert 152: int monitormode = 0; /* Don't do monitoring by default */
1.52 millert 153: int force = 0; /* Force the logs to be rotated */
154: char *conf = CONF; /* Configuration file to use */
155: time_t timenow;
1.93 deraadt 156: char hostname[HOST_NAME_MAX+1]; /* Hostname */
1.52 millert 157: char *daytime; /* timenow in human readable form */
1.65 millert 158: char *arcdir; /* Dir to put archives in (if it exists) */
1.1 deraadt 159:
1.74 millert 160: FILE *openmail(void);
161: char *lstat_log(char *, size_t, int);
162: char *missing_field(char *, char *, int);
163: char *sob(char *);
164: char *son(char *);
165: int age_old_log(struct conf_entry *);
166: int domonitor(struct conf_entry *);
167: int isnumberstr(char *);
168: int log_trim(char *);
1.77 millert 169: int movefile(char *, char *, uid_t, gid_t, mode_t);
1.74 millert 170: int stat_suffix(char *, size_t, char *, struct stat *,
171: int (*)(const char *, struct stat *));
1.79 millert 172: off_t sizefile(struct stat *);
1.74 millert 173: struct conf_entry *
174: parse_file(int *);
175: time_t parse8601(char *);
176: time_t parseDWM(char *);
177: void child_killer(int);
178: void compress_log(struct conf_entry *);
179: void do_entry(struct conf_entry *);
180: void dotrim(struct conf_entry *);
1.81 millert 181: void rotate(struct conf_entry *, const char *);
1.74 millert 182: void parse_args(int, char **);
183: void run_command(char *);
184: void send_signal(char *, int);
185: void usage(void);
1.1 deraadt 186:
1.25 millert 187: int
1.48 millert 188: main(int argc, char **argv)
1.1 deraadt 189: {
1.53 millert 190: struct conf_entry *p, *q, *x, *y;
1.30 millert 191: struct pidinfo *pidlist, *pl;
1.80 deraadt 192: int status, listlen;
1.53 millert 193: char **av;
1.96 ! benno 194:
! 195: if (pledge("stdio rpath wpath cpath fattr exec proc", NULL) == -1)
! 196: err(1,"pledge");
1.35 deraadt 197:
1.48 millert 198: parse_args(argc, argv);
1.53 millert 199: argc -= optind;
200: argv += optind;
201:
1.96 ! benno 202: if (noaction && pledge("stdio rpath", NULL) == -1)
! 203: err(1,"pledge");
! 204: else if (!monitormode && pledge("stdio rpath wpath cpath fattr proc",
! 205: NULL) == -1)
! 206: err(1,"pledge");
! 207:
1.35 deraadt 208: if (needroot && getuid() && geteuid())
1.11 downsj 209: errx(1, "You must be root.");
1.53 millert 210:
211: p = parse_file(&listlen);
212: if (argc > 0) {
213: /* Only rotate specified files. */
214: x = y = NULL;
215: listlen = 0;
216: for (av = argv; *av; av++) {
217: for (q = p; q; q = q->next)
218: if (strcmp(*av, q->log) == 0) {
219: if (x == NULL)
220: x = y = q;
221: else {
222: y->next = q;
223: y = q;
224: }
225: listlen++;
226: break;
227: }
228: if (q == NULL)
1.60 millert 229: warnx("%s: %s not found", conf, *av);
1.53 millert 230: }
231: if (x == NULL)
1.60 millert 232: errx(1, "%s: no specified log files", conf);
1.53 millert 233: y->next = NULL;
234: p = x;
235: }
1.26 millert 236:
1.95 deraadt 237: pidlist = calloc(listlen + 1, sizeof(struct pidinfo));
1.30 millert 238: if (pidlist == NULL)
1.28 millert 239: err(1, "calloc");
240:
1.53 millert 241: signal(SIGCHLD, child_killer);
242:
1.26 millert 243: /* Step 1, rotate all log files */
1.53 millert 244: for (q = p; q; q = q->next)
1.35 deraadt 245: do_entry(q);
1.26 millert 246:
1.28 millert 247: /* Step 2, make a list of unique pid files */
1.30 millert 248: for (q = p, pl = pidlist; q; ) {
1.28 millert 249: if (q->flags & CE_ROTATED) {
1.30 millert 250: struct pidinfo *pltmp;
1.28 millert 251:
1.30 millert 252: for (pltmp = pidlist; pltmp < pl; pltmp++) {
1.76 otto 253: if ((q->pidfile && pltmp->file &&
1.55 millert 254: strcmp(pltmp->file, q->pidfile) == 0 &&
255: pltmp->signal == q->signal) ||
1.76 otto 256: (q->runcmd && pltmp->file &&
1.30 millert 257: strcmp(q->runcmd, pltmp->file) == 0))
1.28 millert 258: break;
1.30 millert 259: }
260: if (pltmp == pl) { /* unique entry */
261: if (q->runcmd) {
262: pl->file = q->runcmd;
263: pl->signal = -1;
264: } else {
265: pl->file = q->pidfile;
266: pl->signal = q->signal;
267: }
1.31 millert 268: pl++;
1.30 millert 269: }
1.28 millert 270: }
1.35 deraadt 271: q = q->next;
272: }
1.26 millert 273:
1.30 millert 274: /* Step 3, send a signal or run a command */
1.76 otto 275: for (pl--; pl >= pidlist; pl--) {
1.56 millert 276: if (pl->file != NULL) {
277: if (pl->signal == -1)
278: run_command(pl->file);
279: else
280: send_signal(pl->file, pl->signal);
281: }
1.30 millert 282: }
1.28 millert 283: if (!noaction)
284: sleep(5);
285:
286: /* Step 4, compress the log.0 file if configured to do so and free */
1.35 deraadt 287: while (p) {
1.81 millert 288: if ((p->flags & CE_COMPACT) && (p->flags & CE_ROTATED) &&
289: p->numlogs > 0)
1.51 millert 290: compress_log(p);
1.26 millert 291: q = p;
1.35 deraadt 292: p = p->next;
293: free(q);
294: }
1.16 millert 295:
296: /* Wait for children to finish, then exit */
297: while (waitpid(-1, &status, 0) != -1)
298: ;
1.35 deraadt 299: exit(0);
1.1 deraadt 300: }
301:
1.25 millert 302: void
1.48 millert 303: do_entry(struct conf_entry *ent)
1.1 deraadt 304: {
1.80 deraadt 305: struct stat sb;
1.91 tedu 306: int modhours;
1.58 millert 307: off_t size;
1.45 wcobb 308:
1.51 millert 309: if (lstat(ent->log, &sb) != 0)
1.50 millert 310: return;
311: if (!S_ISREG(sb.st_mode) &&
312: (!S_ISLNK(sb.st_mode) || !(ent->flags & CE_FOLLOW))) {
313: DPRINTF(("--> not a regular file, skipping\n"));
314: return;
1.45 wcobb 315: }
1.79 millert 316: if (S_ISLNK(sb.st_mode) && stat(ent->log, &sb) != 0) {
317: DPRINTF(("--> link target does not exist, skipping\n"));
318: return;
319: }
320: if (ent->uid == (uid_t)-1)
321: ent->uid = sb.st_uid;
322: if (ent->gid == (gid_t)-1)
323: ent->gid = sb.st_gid;
1.14 millert 324:
1.61 millert 325: DPRINTF(("%s <%d%s%s%s%s>: ", ent->log, ent->numlogs,
1.51 millert 326: (ent->flags & CE_COMPACT) ? "Z" : "",
327: (ent->flags & CE_BINARY) ? "B" : "",
1.61 millert 328: (ent->flags & CE_FOLLOW) ? "F" : "",
329: (ent->flags & CE_MONITOR) && monitormode ? "M" : ""));
1.79 millert 330: size = sizefile(&sb);
1.91 tedu 331: modhours = age_old_log(ent);
1.79 millert 332: if (ent->flags & CE_TRIMAT && !force) {
333: if (timenow < ent->trim_at ||
334: difftime(timenow, ent->trim_at) >= 60 * 60) {
335: DPRINTF(("--> will trim at %s",
336: ctime(&ent->trim_at)));
337: return;
338: } else if (ent->hours <= 0) {
339: DPRINTF(("--> time is up\n"));
1.63 millert 340: }
1.35 deraadt 341: }
1.79 millert 342: if (ent->size > 0)
343: DPRINTF(("size (KB): %.2f [%d] ", size / 1024.0,
344: (int)(ent->size / 1024)));
345: if (ent->hours > 0)
1.91 tedu 346: DPRINTF(("age (hr): %d [%d] ", modhours, ent->hours));
1.79 millert 347: if (monitormode && (ent->flags & CE_MONITOR) && domonitor(ent))
348: DPRINTF(("--> monitored\n"));
349: else if (!monitormode &&
350: (force || (ent->size > 0 && size >= ent->size) ||
351: (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) ||
1.91 tedu 352: (ent->hours > 0 && (modhours >= ent->hours || modhours < 0)
1.79 millert 353: && ((ent->flags & CE_BINARY) || size >= MIN_SIZE)))) {
354: DPRINTF(("--> trimming log....\n"));
355: if (noaction && !verbose)
356: printf("%s <%d%s%s%s>\n", ent->log,
357: ent->numlogs,
358: (ent->flags & CE_COMPACT) ? "Z" : "",
359: (ent->flags & CE_BINARY) ? "B" : "",
360: (ent->flags & CE_FOLLOW) ? "F" : "");
361: dotrim(ent);
362: ent->flags |= CE_ROTATED;
363: } else
364: DPRINTF(("--> skipping\n"));
1.1 deraadt 365: }
366:
1.30 millert 367: /* Run the specified command */
368: void
1.48 millert 369: run_command(char *cmd)
1.30 millert 370: {
371: if (noaction)
1.55 millert 372: (void)printf("run %s\n", cmd);
1.30 millert 373: else
374: system(cmd);
375: }
376:
377: /* Send a signal to the pid specified by pidfile */
1.26 millert 378: void
1.48 millert 379: send_signal(char *pidfile, int signal)
1.26 millert 380: {
1.80 deraadt 381: char line[BUFSIZ], *ep, *err;
1.48 millert 382: pid_t pid;
1.80 deraadt 383: long lval;
1.48 millert 384: FILE *f;
1.26 millert 385:
1.35 deraadt 386: if ((f = fopen(pidfile, "r")) == NULL) {
1.26 millert 387: warn("can't open %s", pidfile);
388: return;
389: }
390:
1.48 millert 391: pid = 0;
1.42 millert 392: errno = 0;
393: err = NULL;
1.40 deraadt 394: if (fgets(line, sizeof(line), f)) {
1.69 millert 395: lval = strtol(line, &ep, 10);
1.41 marc 396: if (line[0] == '\0' || (*ep != '\0' && *ep != '\n'))
1.40 deraadt 397: err = "invalid number in";
1.69 millert 398: else if (lval < 0 || (errno == ERANGE && lval == LONG_MAX))
1.40 deraadt 399: err = "out of range number in";
1.69 millert 400: else if (lval == 0)
1.40 deraadt 401: err = "no number in";
1.69 millert 402: else if (lval < MIN_PID)
1.40 deraadt 403: err = "preposterous process number in";
404: else
1.69 millert 405: pid = (pid_t)lval;
1.42 millert 406: } else {
407: if (errno == 0)
408: err = "empty";
409: else
410: err = "error reading";
1.40 deraadt 411: }
1.26 millert 412: (void)fclose(f);
413:
1.40 deraadt 414: if (err)
415: warnx("%s pid file: %s", err, pidfile);
416: else if (noaction)
1.44 mpech 417: (void)printf("kill -%s %ld\n", sys_signame[signal], (long)pid);
1.30 millert 418: else if (kill(pid, signal))
1.88 nicm 419: warnx("warning - could not send SIG%s to PID from pid file %s",
420: sys_signame[signal], pidfile);
1.26 millert 421: }
422:
1.25 millert 423: void
1.48 millert 424: parse_args(int argc, char **argv)
1.1 deraadt 425: {
1.80 deraadt 426: char *p;
1.48 millert 427: int ch;
1.1 deraadt 428:
1.35 deraadt 429: timenow = time(NULL);
430: daytime = ctime(&timenow) + 4;
431: daytime[15] = '\0';
1.1 deraadt 432:
1.35 deraadt 433: /* Let's get our hostname */
434: (void)gethostname(hostname, sizeof(hostname));
1.1 deraadt 435:
436: /* Truncate domain */
1.48 millert 437: if ((p = strchr(hostname, '.')) != NULL)
1.1 deraadt 438: *p = '\0';
439:
1.52 millert 440: while ((ch = getopt(argc, argv, "Fmnrva:f:")) != -1) {
1.48 millert 441: switch (ch) {
1.51 millert 442: case 'a':
443: arcdir = optarg;
444: break;
1.35 deraadt 445: case 'n':
1.94 deraadt 446: noaction = 1; /* This implies needroot as off */
1.35 deraadt 447: /* fall through */
448: case 'r':
449: needroot = 0;
450: break;
451: case 'v':
1.94 deraadt 452: verbose = 1;
1.35 deraadt 453: break;
454: case 'f':
455: conf = optarg;
456: break;
1.10 downsj 457: case 'm':
1.94 deraadt 458: monitormode = 1;
1.10 downsj 459: break;
1.52 millert 460: case 'F':
1.94 deraadt 461: force = 1;
1.52 millert 462: break;
1.35 deraadt 463: default:
464: usage();
465: }
466: }
1.52 millert 467: if (monitormode && force)
468: errx(1, "cannot specify both -m and -F flags");
1.9 downsj 469: }
1.1 deraadt 470:
1.25 millert 471: void
1.48 millert 472: usage(void)
1.1 deraadt 473: {
1.25 millert 474: extern const char *__progname;
475:
1.52 millert 476: (void)fprintf(stderr, "usage: %s [-Fmnrv] [-a directory] "
1.53 millert 477: "[-f config_file] [log ...]\n", __progname);
1.14 millert 478: exit(1);
1.1 deraadt 479: }
480:
1.52 millert 481: /*
482: * Parse a configuration file and return a linked list of all the logs
1.1 deraadt 483: * to process
484: */
1.25 millert 485: struct conf_entry *
1.48 millert 486: parse_file(int *nentries)
1.1 deraadt 487: {
1.63 millert 488: char line[BUFSIZ], *parse, *q, *errline, *group, *tmp, *ep;
1.80 deraadt 489: struct conf_entry *working = NULL, *first = NULL;
1.48 millert 490: struct passwd *pwd;
1.35 deraadt 491: struct group *grp;
1.51 millert 492: struct stat sb;
1.80 deraadt 493: int lineno;
494: FILE *f;
495: long l;
1.1 deraadt 496:
1.35 deraadt 497: if (strcmp(conf, "-") == 0)
498: f = stdin;
1.48 millert 499: else if ((f = fopen(conf, "r")) == NULL)
500: err(1, "can't open %s", conf);
1.11 downsj 501:
1.28 millert 502: *nentries = 0;
1.75 mpech 503: for (lineno = 1; fgets(line, sizeof(line), f); lineno++) {
1.48 millert 504: tmp = sob(line);
1.54 millert 505: if (*tmp == '\0' || *tmp == '#')
1.35 deraadt 506: continue;
1.48 millert 507: errline = strdup(tmp);
1.11 downsj 508: if (errline == NULL)
509: err(1, "strdup");
1.28 millert 510: (*nentries)++;
1.35 deraadt 511: if (!first) {
1.80 deraadt 512: working = malloc(sizeof(struct conf_entry));
1.11 downsj 513: if (working == NULL)
514: err(1, "malloc");
1.35 deraadt 515: first = working;
516: } else {
1.80 deraadt 517: working->next = malloc(sizeof(struct conf_entry));
1.11 downsj 518: if (working->next == NULL)
519: err(1, "malloc");
1.35 deraadt 520: working = working->next;
521: }
1.1 deraadt 522:
1.60 millert 523: q = parse = missing_field(sob(line), errline, lineno);
1.35 deraadt 524: *(parse = son(line)) = '\0';
525: working->log = strdup(q);
1.11 downsj 526: if (working->log == NULL)
527: err(1, "strdup");
1.1 deraadt 528:
1.51 millert 529: if ((working->logbase = strrchr(working->log, '/')) != NULL)
530: working->logbase++;
531:
1.60 millert 532: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 533: *(parse = son(parse)) = '\0';
1.63 millert 534: if ((group = strchr(q, ':')) != NULL ||
535: (group = strrchr(q, '.')) != NULL) {
1.25 millert 536: *group++ = '\0';
537: if (*q) {
538: if (!(isnumberstr(q))) {
1.48 millert 539: if ((pwd = getpwnam(q)) == NULL)
1.60 millert 540: errx(1, "%s:%d: unknown user: %s",
541: conf, lineno, q);
1.48 millert 542: working->uid = pwd->pw_uid;
1.25 millert 543: } else
544: working->uid = atoi(q);
545: } else
1.50 millert 546: working->uid = (uid_t)-1;
1.25 millert 547:
548: q = group;
549: if (*q) {
550: if (!(isnumberstr(q))) {
551: if ((grp = getgrnam(q)) == NULL)
1.60 millert 552: errx(1, "%s:%d: unknown group: %s",
553: conf, lineno, q);
1.25 millert 554: working->gid = grp->gr_gid;
555: } else
556: working->gid = atoi(q);
557: } else
1.50 millert 558: working->gid = (gid_t)-1;
1.25 millert 559:
1.60 millert 560: q = parse = missing_field(sob(++parse), errline, lineno);
1.25 millert 561: *(parse = son(parse)) = '\0';
1.50 millert 562: } else {
563: working->uid = (uid_t)-1;
564: working->gid = (gid_t)-1;
565: }
1.1 deraadt 566:
1.77 millert 567: l = strtol(q, &ep, 8);
568: if (*ep != '\0' || l < 0 || l > ALLPERMS)
1.60 millert 569: errx(1, "%s:%d: bad permissions: %s", conf, lineno, q);
1.77 millert 570: working->permissions = (mode_t)l;
1.1 deraadt 571:
1.60 millert 572: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 573: *(parse = son(parse)) = '\0';
1.77 millert 574: l = strtol(q, &ep, 10);
575: if (*ep != '\0' || l < 0 || l >= INT_MAX)
1.60 millert 576: errx(1, "%s:%d: bad number: %s", conf, lineno, q);
1.77 millert 577: working->numlogs = (int)l;
1.1 deraadt 578:
1.60 millert 579: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 580: *(parse = son(parse)) = '\0';
1.92 deraadt 581: if (isdigit((unsigned char)*q))
1.58 millert 582: working->size = atoi(q) * 1024;
1.35 deraadt 583: else
584: working->size = -1;
585:
1.63 millert 586: working->flags = 0;
1.60 millert 587: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 588: *(parse = son(parse)) = '\0';
1.70 millert 589: l = strtol(q, &ep, 10);
1.71 millert 590: if (l < 0 || l >= INT_MAX)
1.63 millert 591: errx(1, "%s:%d: interval out of range: %s", conf,
592: lineno, q);
1.70 millert 593: working->hours = (int)l;
1.63 millert 594: switch (*ep) {
595: case '\0':
596: break;
597: case '@':
598: working->trim_at = parse8601(ep + 1);
599: if (working->trim_at == (time_t) - 1)
600: errx(1, "%s:%d: bad time: %s", conf, lineno, q);
601: working->flags |= CE_TRIMAT;
602: break;
603: case '$':
604: working->trim_at = parseDWM(ep + 1);
605: if (working->trim_at == (time_t) - 1)
606: errx(1, "%s:%d: bad time: %s", conf, lineno, q);
607: working->flags |= CE_TRIMAT;
608: break;
609: case '*':
610: if (q == ep)
611: break;
612: /* FALLTHROUGH */
613: default:
614: errx(1, "%s:%d: bad interval/at: %s", conf, lineno, q);
615: break;
616: }
1.1 deraadt 617:
1.35 deraadt 618: q = sob(++parse); /* Optional field */
1.32 millert 619: if (*q == 'Z' || *q == 'z' || *q == 'B' || *q == 'b' ||
620: *q == 'M' || *q == 'm') {
621: *(parse = son(q)) = '\0';
622: while (*q) {
623: switch (*q) {
624: case 'Z':
625: case 'z':
626: working->flags |= CE_COMPACT;
627: break;
628: case 'B':
629: case 'b':
630: working->flags |= CE_BINARY;
631: break;
632: case 'M':
633: case 'm':
634: working->flags |= CE_MONITOR;
1.45 wcobb 635: break;
636: case 'F':
637: case 'f':
638: working->flags |= CE_FOLLOW;
1.32 millert 639: break;
640: default:
1.60 millert 641: errx(1, "%s:%d: illegal flag: `%c'",
642: conf, lineno, *q);
1.32 millert 643: break;
644: }
645: q++;
646: }
647: } else
1.40 deraadt 648: parse--; /* no flags so undo */
1.10 downsj 649:
1.14 millert 650: working->pidfile = PIDFILE;
1.30 millert 651: working->signal = SIGHUP;
652: working->runcmd = NULL;
1.61 millert 653: working->whom = NULL;
1.30 millert 654: for (;;) {
655: q = parse = sob(++parse); /* Optional field */
656: if (q == NULL || *q == '\0')
657: break;
658: if (*q == '/') {
659: *(parse = son(parse)) = '\0';
1.93 deraadt 660: if (strlen(q) >= PATH_MAX)
1.60 millert 661: errx(1, "%s:%d: pathname too long: %s",
662: conf, lineno, q);
1.30 millert 663: working->pidfile = strdup(q);
664: if (working->pidfile == NULL)
665: err(1, "strdup");
666: } else if (*q == '"' && (tmp = strchr(q + 1, '"'))) {
667: *(parse = tmp) = '\0';
1.56 millert 668: if (*++q != '\0') {
669: working->runcmd = strdup(q);
670: if (working->runcmd == NULL)
671: err(1, "strdup");
672: }
1.55 millert 673: working->pidfile = NULL;
674: working->signal = -1;
1.30 millert 675: } else if (strncmp(q, "SIG", 3) == 0) {
676: int i;
677:
678: *(parse = son(parse)) = '\0';
679: for (i = 1; i < NSIG; i++) {
680: if (!strcmp(sys_signame[i], q + 3)) {
681: working->signal = i;
682: break;
683: }
684: }
685: if (i == NSIG)
1.60 millert 686: errx(1, "%s:%d: unknown signal: %s",
687: conf, lineno, q);
1.61 millert 688: } else if (working->flags & CE_MONITOR) {
689: *(parse = son(parse)) = '\0';
690: working->whom = strdup(q);
691: if (working->whom == NULL)
692: err(1, "strdup");
1.30 millert 693: } else
1.60 millert 694: errx(1, "%s:%d: unrecognized field: %s",
695: conf, lineno, q);
1.14 millert 696: }
1.51 millert 697: free(errline);
698:
1.61 millert 699: if ((working->flags & CE_MONITOR) && working->whom == NULL)
700: errx(1, "%s:%d: missing monitor notification field",
701: conf, lineno);
702:
1.51 millert 703: /* If there is an arcdir, set working->backdir. */
704: if (arcdir != NULL && working->logbase != NULL) {
705: if (*arcdir == '/') {
706: /* Fully qualified arcdir */
707: working->backdir = arcdir;
708: } else {
709: /* arcdir is relative to log's parent dir */
710: *(working->logbase - 1) = '\0';
711: if ((asprintf(&working->backdir, "%s/%s",
712: working->log, arcdir)) == -1)
713: err(1, "malloc");
714: *(working->logbase - 1) = '/';
715: }
716: /* Ignore arcdir if it doesn't exist. */
717: if (stat(working->backdir, &sb) != 0 ||
718: !S_ISDIR(sb.st_mode)) {
719: if (working->backdir != arcdir)
720: free(working->backdir);
721: working->backdir = NULL;
722: }
723: } else
724: working->backdir = NULL;
1.25 millert 725:
1.93 deraadt 726: /* Make sure we can't oflow PATH_MAX */
1.51 millert 727: if (working->backdir != NULL) {
728: if (snprintf(line, sizeof(line), "%s/%s.%d%s",
729: working->backdir, working->logbase,
1.93 deraadt 730: working->numlogs, COMPRESS_POSTFIX) >= PATH_MAX)
1.60 millert 731: errx(1, "%s:%d: pathname too long: %s",
732: conf, lineno, q);
1.51 millert 733: } else {
734: if (snprintf(line, sizeof(line), "%s.%d%s",
735: working->log, working->numlogs, COMPRESS_POSTFIX)
1.93 deraadt 736: >= PATH_MAX)
1.60 millert 737: errx(1, "%s:%d: pathname too long: %s",
738: conf, lineno, working->log);
1.51 millert 739: }
1.35 deraadt 740: }
741: if (working)
742: working->next = NULL;
743: (void)fclose(f);
1.48 millert 744: return (first);
1.1 deraadt 745: }
746:
1.25 millert 747: char *
1.60 millert 748: missing_field(char *p, char *errline, int lineno)
1.1 deraadt 749: {
1.60 millert 750: if (p == NULL || *p == '\0') {
751: warnx("%s:%d: missing field", conf, lineno);
1.35 deraadt 752: fputs(errline, stderr);
753: exit(1);
754: }
1.48 millert 755: return (p);
1.1 deraadt 756: }
757:
1.25 millert 758: void
1.81 millert 759: rotate(struct conf_entry *ent, const char *oldlog)
1.35 deraadt 760: {
1.93 deraadt 761: char file1[PATH_MAX], file2[PATH_MAX], *suffix;
1.87 schwarze 762: int numdays = ent->numlogs - 1;
763: int done = 0;
1.1 deraadt 764:
1.87 schwarze 765: /* Remove old logs */
766: do {
767: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
768: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog,
769: numdays, COMPRESS_POSTFIX);
770: if (noaction) {
771: printf("\trm -f %s %s\n", file1, file2);
772: done = access(file1, 0) && access(file2, 0);
773: } else {
774: done = unlink(file1) && unlink(file2);
775: }
776: numdays++;
777: } while (done == 0);
1.35 deraadt 778:
779: /* Move down log files */
1.87 schwarze 780: for (numdays = ent->numlogs - 2; numdays >= 0; numdays--) {
1.57 millert 781: /*
1.65 millert 782: * If both the compressed archive and the non-compressed archive
1.70 millert 783: * exist, we decide which to rotate based on the CE_COMPACT flag
1.57 millert 784: */
1.51 millert 785: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
1.57 millert 786: suffix = lstat_log(file1, sizeof(file1), ent->flags);
787: if (suffix == NULL)
788: continue;
789: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog,
790: numdays + 1, suffix);
791:
1.35 deraadt 792: if (noaction) {
1.57 millert 793: printf("\tmv %s %s\n", file1, file2);
794: printf("\tchmod %o %s\n", ent->permissions, file2);
1.79 millert 795: printf("\tchown %u:%u %s\n", ent->uid, ent->gid, file2);
1.35 deraadt 796: } else {
1.57 millert 797: if (rename(file1, file2))
798: warn("can't mv %s to %s", file1, file2);
799: if (chmod(file2, ent->permissions))
800: warn("can't chmod %s", file2);
1.79 millert 801: if (chown(file2, ent->uid, ent->gid))
802: warn("can't chown %s", file2);
1.35 deraadt 803: }
804: }
1.81 millert 805: }
806:
807: void
808: dotrim(struct conf_entry *ent)
809: {
1.93 deraadt 810: char file1[PATH_MAX], file2[PATH_MAX], oldlog[PATH_MAX];
1.81 millert 811: int fd;
812:
813: /* Is there a separate backup dir? */
814: if (ent->backdir != NULL)
815: snprintf(oldlog, sizeof(oldlog), "%s/%s", ent->backdir,
816: ent->logbase);
817: else
818: strlcpy(oldlog, ent->log, sizeof(oldlog));
819:
820: if (ent->numlogs > 0)
821: rotate(ent, oldlog);
1.51 millert 822: if (!noaction && !(ent->flags & CE_BINARY))
1.81 millert 823: (void)log_trim(ent->log);
1.1 deraadt 824:
1.51 millert 825: (void)snprintf(file2, sizeof(file2), "%s.XXXXXXXXXX", ent->log);
1.35 deraadt 826: if (noaction) {
1.50 millert 827: printf("\tmktemp %s\n", file2);
1.35 deraadt 828: } else {
829: if ((fd = mkstemp(file2)) < 0)
1.26 millert 830: err(1, "can't start '%s' log", file2);
1.51 millert 831: if (fchmod(fd, ent->permissions))
1.26 millert 832: err(1, "can't chmod '%s' log file", file2);
1.79 millert 833: if (fchown(fd, ent->uid, ent->gid))
834: err(1, "can't chown '%s' log file", file2);
1.35 deraadt 835: (void)close(fd);
1.26 millert 836: /* Add status message */
1.51 millert 837: if (!(ent->flags & CE_BINARY) && log_trim(file2))
1.26 millert 838: err(1, "can't add status message to log '%s'", file2);
1.35 deraadt 839: }
1.26 millert 840:
1.51 millert 841: if (ent->numlogs == 0) {
1.5 deraadt 842: if (noaction)
1.51 millert 843: printf("\trm %s\n", ent->log);
844: else if (unlink(ent->log))
845: warn("can't rm %s", ent->log);
1.5 deraadt 846: } else {
1.57 millert 847: (void)snprintf(file1, sizeof(file1), "%s.0", oldlog);
1.78 millert 848: if (noaction) {
1.51 millert 849: printf("\tmv %s to %s\n", ent->log, file1);
1.78 millert 850: printf("\tchmod %o %s\n", ent->permissions, file1);
1.79 millert 851: printf("\tchown %u:%u %s\n", ent->uid, ent->gid, file1);
1.78 millert 852: } else if (movefile(ent->log, file1, ent->uid, ent->gid,
1.74 millert 853: ent->permissions))
1.59 millert 854: warn("can't mv %s to %s", ent->log, file1);
1.5 deraadt 855: }
856:
1.26 millert 857: /* Now move the new log file into place */
858: if (noaction)
1.51 millert 859: printf("\tmv %s to %s\n", file2, ent->log);
860: else if (rename(file2, ent->log))
1.59 millert 861: warn("can't mv %s to %s", file2, ent->log);
1.1 deraadt 862: }
863:
864: /* Log the fact that the logs were turned over */
1.25 millert 865: int
1.48 millert 866: log_trim(char *log)
1.1 deraadt 867: {
1.35 deraadt 868: FILE *f;
1.25 millert 869:
1.35 deraadt 870: if ((f = fopen(log, "a")) == NULL)
1.48 millert 871: return (-1);
1.44 mpech 872: (void)fprintf(f, "%s %s newsyslog[%ld]: logfile turned over\n",
873: daytime, hostname, (long)getpid());
1.35 deraadt 874: if (fclose(f) == EOF)
875: err(1, "log_trim: fclose");
1.48 millert 876: return (0);
1.1 deraadt 877: }
878:
1.16 millert 879: /* Fork off compress or gzip to compress the old log file */
1.25 millert 880: void
1.51 millert 881: compress_log(struct conf_entry *ent)
1.1 deraadt 882: {
1.93 deraadt 883: char *base, tmp[PATH_MAX];
1.48 millert 884: pid_t pid;
1.51 millert 885:
886: if (ent->backdir != NULL)
887: snprintf(tmp, sizeof(tmp), "%s/%s.0", ent->backdir,
888: ent->logbase);
889: else
890: snprintf(tmp, sizeof(tmp), "%s.0", ent->log);
891:
1.27 millert 892: if ((base = strrchr(COMPRESS, '/')) == NULL)
893: base = COMPRESS;
894: else
895: base++;
896: if (noaction) {
1.51 millert 897: printf("%s %s\n", base, tmp);
1.27 millert 898: return;
899: }
1.35 deraadt 900: pid = fork();
901: if (pid < 0) {
1.11 downsj 902: err(1, "fork");
1.50 millert 903: } else if (pid == 0) {
1.37 deraadt 904: (void)execl(COMPRESS, base, "-f", tmp, (char *)NULL);
1.16 millert 905: warn(COMPRESS);
906: _exit(1);
1.35 deraadt 907: }
1.1 deraadt 908: }
909:
1.89 lum 910: /* Return size in bytes of a file */
1.58 millert 911: off_t
1.79 millert 912: sizefile(struct stat *sb)
1.1 deraadt 913: {
1.58 millert 914: /* For sparse files, return the size based on number of blocks used. */
1.79 millert 915: if (sb->st_size / DEV_BSIZE > sb->st_blocks)
916: return (sb->st_blocks * DEV_BSIZE);
1.58 millert 917: else
1.79 millert 918: return (sb->st_size);
1.1 deraadt 919: }
920:
1.25 millert 921: /* Return the age (in hours) of old log file (file.0), or -1 if none */
922: int
1.51 millert 923: age_old_log(struct conf_entry *ent)
1.1 deraadt 924: {
1.93 deraadt 925: char file[PATH_MAX];
1.35 deraadt 926: struct stat sb;
1.1 deraadt 927:
1.51 millert 928: if (ent->backdir != NULL)
1.57 millert 929: (void)snprintf(file, sizeof(file), "%s/%s.0", ent->backdir,
930: ent->logbase);
931: else
932: (void)snprintf(file, sizeof(file), "%s.0", ent->log);
933: if (ent->flags & CE_COMPACT) {
934: if (stat_suffix(file, sizeof(file), COMPRESS_POSTFIX, &sb,
935: stat) < 0 && stat(file, &sb) < 0)
936: return (-1);
937: } else {
938: if (stat(file, &sb) < 0 && stat_suffix(file, sizeof(file),
939: COMPRESS_POSTFIX, &sb, stat) < 0)
940: return (-1);
941: }
1.48 millert 942: return ((int)(timenow - sb.st_mtime + 1800) / 3600);
1.1 deraadt 943: }
944:
945: /* Skip Over Blanks */
1.25 millert 946: char *
1.48 millert 947: sob(char *p)
1.1 deraadt 948: {
1.84 tedu 949: if (p == NULL)
950: return(p);
1.92 deraadt 951: while (isspace((unsigned char)*p))
1.35 deraadt 952: p++;
1.48 millert 953: return (p);
1.1 deraadt 954: }
955:
956: /* Skip Over Non-Blanks */
1.25 millert 957: char *
1.48 millert 958: son(char *p)
1.1 deraadt 959: {
1.92 deraadt 960: while (p && *p && !isspace((unsigned char)*p))
1.35 deraadt 961: p++;
1.48 millert 962: return (p);
1.1 deraadt 963: }
964:
965: /* Check if string is actually a number */
1.25 millert 966: int
1.48 millert 967: isnumberstr(char *string)
1.1 deraadt 968: {
1.35 deraadt 969: while (*string) {
1.92 deraadt 970: if (!isdigit((unsigned char)*string++))
1.48 millert 971: return (0);
1.35 deraadt 972: }
1.48 millert 973: return (1);
1.10 downsj 974: }
975:
1.61 millert 976: int
977: domonitor(struct conf_entry *ent)
1.10 downsj 978: {
1.93 deraadt 979: char fname[PATH_MAX], *flog, *p, *rb = NULL;
1.10 downsj 980: struct stat sb, tsb;
1.80 deraadt 981: off_t osize;
1.10 downsj 982: FILE *fp;
983: int rd;
984:
1.61 millert 985: if (stat(ent->log, &sb) < 0)
986: return (0);
987:
988: if (noaction) {
989: if (!verbose)
990: printf("%s: monitored\n", ent->log);
991: return (1);
992: }
1.10 downsj 993:
1.61 millert 994: flog = strdup(ent->log);
1.11 downsj 995: if (flog == NULL)
996: err(1, "strdup");
997:
1.10 downsj 998: for (p = flog; *p != '\0'; p++) {
999: if (*p == '/')
1000: *p = '_';
1001: }
1.48 millert 1002: snprintf(fname, sizeof(fname), "%s/newsyslog.%s.size",
1.35 deraadt 1003: STATS_DIR, flog);
1.10 downsj 1004:
1005: /* ..if it doesn't exist, simply record the current size. */
1006: if ((sb.st_size == 0) || stat(fname, &tsb) < 0)
1007: goto update;
1008:
1009: fp = fopen(fname, "r");
1010: if (fp == NULL) {
1.34 millert 1011: warn("%s", fname);
1.10 downsj 1012: goto cleanup;
1013: }
1014: #ifdef QUAD_OFF_T
1.70 millert 1015: if (fscanf(fp, "%lld\n", &osize) != 1) {
1.10 downsj 1016: #else
1017: if (fscanf(fp, "%ld\n", &osize) != 1) {
1018: #endif /* QUAD_OFF_T */
1019: fclose(fp);
1020: goto update;
1021: }
1022:
1023: fclose(fp);
1024:
1025: /* If the file is smaller, mark the entire thing as changed. */
1026: if (sb.st_size < osize)
1027: osize = 0;
1028:
1029: /* Now see if current size is larger. */
1030: if (sb.st_size > osize) {
1.95 deraadt 1031: rb = malloc(sb.st_size - osize);
1.11 downsj 1032: if (rb == NULL)
1033: err(1, "malloc");
1.10 downsj 1034:
1035: /* Open logfile, seek. */
1.61 millert 1036: fp = fopen(ent->log, "r");
1.10 downsj 1037: if (fp == NULL) {
1.61 millert 1038: warn("%s", ent->log);
1.10 downsj 1039: goto cleanup;
1040: }
1041: fseek(fp, osize, SEEK_SET);
1042: rd = fread(rb, 1, sb.st_size - osize, fp);
1043: if (rd < 1) {
1.11 downsj 1044: warn("fread");
1.10 downsj 1045: fclose(fp);
1046: goto cleanup;
1047: }
1048:
1049: /* Send message. */
1050: fclose(fp);
1051:
1052: fp = openmail();
1053: if (fp == NULL) {
1.11 downsj 1054: warn("openmail");
1.10 downsj 1055: goto cleanup;
1056: }
1.83 deraadt 1057: fprintf(fp, "Auto-Submitted: auto-generated\n");
1.10 downsj 1058: fprintf(fp, "To: %s\nSubject: LOGFILE NOTIFICATION: %s\n\n\n",
1.61 millert 1059: ent->whom, ent->log);
1.10 downsj 1060: fwrite(rb, 1, rd, fp);
1061: fputs("\n\n", fp);
1062:
1.48 millert 1063: pclose(fp);
1.10 downsj 1064: }
1065: update:
1066: /* Reopen for writing and update file. */
1067: fp = fopen(fname, "w");
1068: if (fp == NULL) {
1.34 millert 1069: warn("%s", fname);
1.10 downsj 1070: goto cleanup;
1071: }
1072: #ifdef QUAD_OFF_T
1.70 millert 1073: fprintf(fp, "%lld\n", (long long)sb.st_size);
1.10 downsj 1074: #else
1.70 millert 1075: fprintf(fp, "%ld\n", (long)sb.st_size);
1.10 downsj 1076: #endif /* QUAD_OFF_T */
1077: fclose(fp);
1078:
1079: cleanup:
1080: free(flog);
1081: if (rb != NULL)
1082: free(rb);
1.61 millert 1083: return (1);
1.10 downsj 1084: }
1085:
1.25 millert 1086: FILE *
1.48 millert 1087: openmail(void)
1.10 downsj 1088: {
1.80 deraadt 1089: char *cmdbuf = NULL;
1.48 millert 1090: FILE *ret;
1.10 downsj 1091:
1.64 pvalchev 1092: if (asprintf(&cmdbuf, "%s -t", SENDMAIL) != -1) {
1.35 deraadt 1093: ret = popen(cmdbuf, "w");
1094: free(cmdbuf);
1095: return (ret);
1096: }
1097: return (NULL);
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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