1/*-
2 * ------+---------+---------+-------- + --------+---------+---------+---------*
3 * This file includes significant modifications done by:
4 * Copyright (c) 2003, 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * ------+---------+---------+-------- + --------+---------+---------+---------*
29 */
30
31/*
32 * This file contains changes from the Open Software Foundation.
33 */
34
35/*
36 * Copyright 1988, 1989 by the Massachusetts Institute of Technology
37 *
38 * Permission to use, copy, modify, and distribute this software and its
39 * documentation for any purpose and without fee is hereby granted, provided
40 * that the above copyright notice appear in all copies and that both that
41 * copyright notice and this permission notice appear in supporting
42 * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
43 * used in advertising or publicity pertaining to distribution of the
44 * software without specific, written prior permission. M.I.T. and the M.I.T.
45 * S.I.P.B. make no representations about the suitability of this software
46 * for any purpose. It is provided "as is" without express or implied
47 * warranty.
48 *
49 */
50
51/*
52 * newsyslog - roll over selected logs at the appropriate time, keeping the a
53 * specified number of backup files around.
54 */
55
56#include <sys/cdefs.h>
| 1/*-
2 * ------+---------+---------+-------- + --------+---------+---------+---------*
3 * This file includes significant modifications done by:
4 * Copyright (c) 2003, 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * ------+---------+---------+-------- + --------+---------+---------+---------*
29 */
30
31/*
32 * This file contains changes from the Open Software Foundation.
33 */
34
35/*
36 * Copyright 1988, 1989 by the Massachusetts Institute of Technology
37 *
38 * Permission to use, copy, modify, and distribute this software and its
39 * documentation for any purpose and without fee is hereby granted, provided
40 * that the above copyright notice appear in all copies and that both that
41 * copyright notice and this permission notice appear in supporting
42 * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
43 * used in advertising or publicity pertaining to distribution of the
44 * software without specific, written prior permission. M.I.T. and the M.I.T.
45 * S.I.P.B. make no representations about the suitability of this software
46 * for any purpose. It is provided "as is" without express or implied
47 * warranty.
48 *
49 */
50
51/*
52 * newsyslog - roll over selected logs at the appropriate time, keeping the a
53 * specified number of backup files around.
54 */
55
56#include <sys/cdefs.h>
|
57__FBSDID("$FreeBSD: head/usr.sbin/newsyslog/newsyslog.c 233257 2012-03-21 06:51:45Z glebius $");
| 57__FBSDID("$FreeBSD: head/usr.sbin/newsyslog/newsyslog.c 235647 2012-05-19 12:44:27Z gleb $");
|
58
59#define OSF
60
61#include <sys/param.h>
62#include <sys/queue.h>
63#include <sys/stat.h>
64#include <sys/wait.h>
65
66#include <assert.h>
67#include <ctype.h>
68#include <err.h>
69#include <errno.h>
70#include <dirent.h>
71#include <fcntl.h>
72#include <fnmatch.h>
73#include <glob.h>
74#include <grp.h>
75#include <paths.h>
76#include <pwd.h>
77#include <signal.h>
78#include <stdio.h>
79#include <libgen.h>
80#include <stdlib.h>
81#include <string.h>
82#include <time.h>
83#include <unistd.h>
84
85#include "pathnames.h"
86#include "extern.h"
87
88/*
89 * Compression suffixes
90 */
91#ifndef COMPRESS_SUFFIX_GZ
92#define COMPRESS_SUFFIX_GZ ".gz"
93#endif
94
95#ifndef COMPRESS_SUFFIX_BZ2
96#define COMPRESS_SUFFIX_BZ2 ".bz2"
97#endif
98
99#ifndef COMPRESS_SUFFIX_XZ
100#define COMPRESS_SUFFIX_XZ ".xz"
101#endif
102
103#define COMPRESS_SUFFIX_MAXLEN MAX(MAX(sizeof(COMPRESS_SUFFIX_GZ),sizeof(COMPRESS_SUFFIX_BZ2)),sizeof(COMPRESS_SUFFIX_XZ))
104
105/*
106 * Compression types
107 */
108#define COMPRESS_TYPES 4 /* Number of supported compression types */
109
110#define COMPRESS_NONE 0
111#define COMPRESS_GZIP 1
112#define COMPRESS_BZIP2 2
113#define COMPRESS_XZ 3
114
115/*
116 * Bit-values for the 'flags' parsed from a config-file entry.
117 */
118#define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */
119 /* messages to logfile(s) when rotating. */
120#define CE_NOSIGNAL 0x0010 /* There is no process to signal when */
121 /* trimming this file. */
122#define CE_TRIMAT 0x0020 /* trim file at a specific time. */
123#define CE_GLOB 0x0040 /* name of the log is file name pattern. */
124#define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */
125 /* process when trimming this file. */
126#define CE_CREATE 0x0100 /* Create the log file if it does not exist. */
127#define CE_NODUMP 0x0200 /* Set 'nodump' on newly created log file. */
128#define CE_PID2CMD 0x0400 /* Replace PID file with a shell command.*/
129
130#define MIN_PID 5 /* Don't touch pids lower than this */
131#define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */
132
133#define kbytes(size) (((size) + 1023) >> 10)
134
135#define DEFAULT_MARKER "<default>"
136#define DEBUG_MARKER "<debug>"
137#define INCLUDE_MARKER "<include>"
138#define DEFAULT_TIMEFNAME_FMT "%Y%m%dT%H%M%S"
139
140#define MAX_OLDLOGS 65536 /* Default maximum number of old logfiles */
141
142struct compress_types {
143 const char *flag; /* Flag in configuration file */
144 const char *suffix; /* Compression suffix */
145 const char *path; /* Path to compression program */
146};
147
148const struct compress_types compress_type[COMPRESS_TYPES] = {
149 { "", "", "" }, /* no compression */
150 { "Z", COMPRESS_SUFFIX_GZ, _PATH_GZIP }, /* gzip compression */
151 { "J", COMPRESS_SUFFIX_BZ2, _PATH_BZIP2 }, /* bzip2 compression */
152 { "X", COMPRESS_SUFFIX_XZ, _PATH_XZ } /* xz compression */
153};
154
155struct conf_entry {
156 STAILQ_ENTRY(conf_entry) cf_nextp;
157 char *log; /* Name of the log */
158 char *pid_cmd_file; /* PID or command file */
159 char *r_reason; /* The reason this file is being rotated */
160 int firstcreate; /* Creating log for the first time (-C). */
161 int rotate; /* Non-zero if this file should be rotated */
162 int fsize; /* size found for the log file */
163 uid_t uid; /* Owner of log */
164 gid_t gid; /* Group of log */
165 int numlogs; /* Number of logs to keep */
166 int trsize; /* Size cutoff to trigger trimming the log */
167 int hours; /* Hours between log trimming */
168 struct ptime_data *trim_at; /* Specific time to do trimming */
169 unsigned int permissions; /* File permissions on the log */
170 int flags; /* CE_BINARY */
171 int compress; /* Compression */
172 int sig; /* Signal to send */
173 int def_cfg; /* Using the <default> rule for this file */
174};
175
176struct sigwork_entry {
177 SLIST_ENTRY(sigwork_entry) sw_nextp;
178 int sw_signum; /* the signal to send */
179 int sw_pidok; /* true if pid value is valid */
180 pid_t sw_pid; /* the process id from the PID file */
181 const char *sw_pidtype; /* "daemon" or "process group" */
182 int run_cmd; /* run command or send PID to signal */
183 char sw_fname[1]; /* file the PID was read from or shell cmd */
184};
185
186struct zipwork_entry {
187 SLIST_ENTRY(zipwork_entry) zw_nextp;
188 const struct conf_entry *zw_conf; /* for chown/perm/flag info */
189 const struct sigwork_entry *zw_swork; /* to know success of signal */
190 int zw_fsize; /* size of the file to compress */
191 char zw_fname[1]; /* the file to compress */
192};
193
194struct include_entry {
195 STAILQ_ENTRY(include_entry) inc_nextp;
196 const char *file; /* Name of file to process */
197};
198
199struct oldlog_entry {
200 char *fname; /* Filename of the log file */
201 time_t t; /* Parsed timestamp of the logfile */
202};
203
204typedef enum {
205 FREE_ENT, KEEP_ENT
206} fk_entry;
207
208STAILQ_HEAD(cflist, conf_entry);
209SLIST_HEAD(swlisthead, sigwork_entry) swhead = SLIST_HEAD_INITIALIZER(swhead);
210SLIST_HEAD(zwlisthead, zipwork_entry) zwhead = SLIST_HEAD_INITIALIZER(zwhead);
211STAILQ_HEAD(ilist, include_entry);
212
213int dbg_at_times; /* -D Show details of 'trim_at' code */
214
215int archtodir = 0; /* Archive old logfiles to other directory */
216int createlogs; /* Create (non-GLOB) logfiles which do not */
217 /* already exist. 1=='for entries with */
218 /* C flag', 2=='for all entries'. */
219int verbose = 0; /* Print out what's going on */
220int needroot = 1; /* Root privs are necessary */
221int noaction = 0; /* Don't do anything, just show it */
222int norotate = 0; /* Don't rotate */
223int nosignal; /* Do not send any signals */
224int enforcepid = 0; /* If PID file does not exist or empty, do nothing */
225int force = 0; /* Force the trim no matter what */
226int rotatereq = 0; /* -R = Always rotate the file(s) as given */
227 /* on the command (this also requires */
228 /* that a list of files *are* given on */
229 /* the run command). */
230char *requestor; /* The name given on a -R request */
231char *timefnamefmt = NULL; /* Use time based filenames instead of .0 etc */
232char *archdirname; /* Directory path to old logfiles archive */
233char *destdir = NULL; /* Directory to treat at root for logs */
234const char *conf; /* Configuration file to use */
235
236struct ptime_data *dbg_timenow; /* A "timenow" value set via -D option */
237struct ptime_data *timenow; /* The time to use for checking at-fields */
238
239#define DAYTIME_LEN 16
240char daytime[DAYTIME_LEN]; /* The current time in human readable form,
241 * used for rotation-tracking messages. */
242char hostname[MAXHOSTNAMELEN]; /* hostname */
243
244const char *path_syslogpid = _PATH_SYSLOGPID;
245
246static struct cflist *get_worklist(char **files);
247static void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
248 struct conf_entry *defconf_p, struct ilist *inclist);
249static void add_to_queue(const char *fname, struct ilist *inclist);
250static char *sob(char *p);
251static char *son(char *p);
252static int isnumberstr(const char *);
253static int isglobstr(const char *);
254static char *missing_field(char *p, char *errline);
255static void change_attrs(const char *, const struct conf_entry *);
256static const char *get_logfile_suffix(const char *logfile);
257static fk_entry do_entry(struct conf_entry *);
258static fk_entry do_rotate(const struct conf_entry *);
259static void do_sigwork(struct sigwork_entry *);
260static void do_zipwork(struct zipwork_entry *);
261static struct sigwork_entry *
262 save_sigwork(const struct conf_entry *);
263static struct zipwork_entry *
264 save_zipwork(const struct conf_entry *, const struct
265 sigwork_entry *, int, const char *);
266static void set_swpid(struct sigwork_entry *, const struct conf_entry *);
267static int sizefile(const char *);
268static void expand_globs(struct cflist *work_p, struct cflist *glob_p);
269static void free_clist(struct cflist *list);
270static void free_entry(struct conf_entry *ent);
271static struct conf_entry *init_entry(const char *fname,
272 struct conf_entry *src_entry);
273static void parse_args(int argc, char **argv);
274static int parse_doption(const char *doption);
275static void usage(void);
276static int log_trim(const char *logname, const struct conf_entry *log_ent);
277static int age_old_log(char *file);
278static void savelog(char *from, char *to);
279static void createdir(const struct conf_entry *ent, char *dirpart);
280static void createlog(const struct conf_entry *ent);
281
282/*
283 * All the following take a parameter of 'int', but expect values in the
284 * range of unsigned char. Define wrappers which take values of type 'char',
285 * whether signed or unsigned, and ensure they end up in the right range.
286 */
287#define isdigitch(Anychar) isdigit((u_char)(Anychar))
288#define isprintch(Anychar) isprint((u_char)(Anychar))
289#define isspacech(Anychar) isspace((u_char)(Anychar))
290#define tolowerch(Anychar) tolower((u_char)(Anychar))
291
292int
293main(int argc, char **argv)
294{
295 struct cflist *worklist;
296 struct conf_entry *p;
297 struct sigwork_entry *stmp;
298 struct zipwork_entry *ztmp;
299
300 SLIST_INIT(&swhead);
301 SLIST_INIT(&zwhead);
302
303 parse_args(argc, argv);
304 argc -= optind;
305 argv += optind;
306
307 if (needroot && getuid() && geteuid())
308 errx(1, "must have root privs");
309 worklist = get_worklist(argv);
310
311 /*
312 * Rotate all the files which need to be rotated. Note that
313 * some users have *hundreds* of entries in newsyslog.conf!
314 */
315 while (!STAILQ_EMPTY(worklist)) {
316 p = STAILQ_FIRST(worklist);
317 STAILQ_REMOVE_HEAD(worklist, cf_nextp);
318 if (do_entry(p) == FREE_ENT)
319 free_entry(p);
320 }
321
322 /*
323 * Send signals to any processes which need a signal to tell
324 * them to close and re-open the log file(s) we have rotated.
325 * Note that zipwork_entries include pointers to these
326 * sigwork_entry's, so we can not free the entries here.
327 */
328 if (!SLIST_EMPTY(&swhead)) {
329 if (noaction || verbose)
330 printf("Signal all daemon process(es)...\n");
331 SLIST_FOREACH(stmp, &swhead, sw_nextp)
332 do_sigwork(stmp);
333 if (noaction)
334 printf("\tsleep 10\n");
335 else {
336 if (verbose)
337 printf("Pause 10 seconds to allow daemon(s)"
338 " to close log file(s)\n");
339 sleep(10);
340 }
341 }
342 /*
343 * Compress all files that we're expected to compress, now
344 * that all processes should have closed the files which
345 * have been rotated.
346 */
347 if (!SLIST_EMPTY(&zwhead)) {
348 if (noaction || verbose)
349 printf("Compress all rotated log file(s)...\n");
350 while (!SLIST_EMPTY(&zwhead)) {
351 ztmp = SLIST_FIRST(&zwhead);
352 do_zipwork(ztmp);
353 SLIST_REMOVE_HEAD(&zwhead, zw_nextp);
354 free(ztmp);
355 }
356 }
357 /* Now free all the sigwork entries. */
358 while (!SLIST_EMPTY(&swhead)) {
359 stmp = SLIST_FIRST(&swhead);
360 SLIST_REMOVE_HEAD(&swhead, sw_nextp);
361 free(stmp);
362 }
363
364 while (wait(NULL) > 0 || errno == EINTR)
365 ;
366 return (0);
367}
368
369static struct conf_entry *
370init_entry(const char *fname, struct conf_entry *src_entry)
371{
372 struct conf_entry *tempwork;
373
374 if (verbose > 4)
375 printf("\t--> [creating entry for %s]\n", fname);
376
377 tempwork = malloc(sizeof(struct conf_entry));
378 if (tempwork == NULL)
379 err(1, "malloc of conf_entry for %s", fname);
380
381 if (destdir == NULL || fname[0] != '/')
382 tempwork->log = strdup(fname);
383 else
384 asprintf(&tempwork->log, "%s%s", destdir, fname);
385 if (tempwork->log == NULL)
386 err(1, "strdup for %s", fname);
387
388 if (src_entry != NULL) {
389 tempwork->pid_cmd_file = NULL;
390 if (src_entry->pid_cmd_file)
391 tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file);
392 tempwork->r_reason = NULL;
393 tempwork->firstcreate = 0;
394 tempwork->rotate = 0;
395 tempwork->fsize = -1;
396 tempwork->uid = src_entry->uid;
397 tempwork->gid = src_entry->gid;
398 tempwork->numlogs = src_entry->numlogs;
399 tempwork->trsize = src_entry->trsize;
400 tempwork->hours = src_entry->hours;
401 tempwork->trim_at = NULL;
402 if (src_entry->trim_at != NULL)
403 tempwork->trim_at = ptime_init(src_entry->trim_at);
404 tempwork->permissions = src_entry->permissions;
405 tempwork->flags = src_entry->flags;
406 tempwork->compress = src_entry->compress;
407 tempwork->sig = src_entry->sig;
408 tempwork->def_cfg = src_entry->def_cfg;
409 } else {
410 /* Initialize as a "do-nothing" entry */
411 tempwork->pid_cmd_file = NULL;
412 tempwork->r_reason = NULL;
413 tempwork->firstcreate = 0;
414 tempwork->rotate = 0;
415 tempwork->fsize = -1;
416 tempwork->uid = (uid_t)-1;
417 tempwork->gid = (gid_t)-1;
418 tempwork->numlogs = 1;
419 tempwork->trsize = -1;
420 tempwork->hours = -1;
421 tempwork->trim_at = NULL;
422 tempwork->permissions = 0;
423 tempwork->flags = 0;
424 tempwork->compress = COMPRESS_NONE;
425 tempwork->sig = SIGHUP;
426 tempwork->def_cfg = 0;
427 }
428
429 return (tempwork);
430}
431
432static void
433free_entry(struct conf_entry *ent)
434{
435
436 if (ent == NULL)
437 return;
438
439 if (ent->log != NULL) {
440 if (verbose > 4)
441 printf("\t--> [freeing entry for %s]\n", ent->log);
442 free(ent->log);
443 ent->log = NULL;
444 }
445
446 if (ent->pid_cmd_file != NULL) {
447 free(ent->pid_cmd_file);
448 ent->pid_cmd_file = NULL;
449 }
450
451 if (ent->r_reason != NULL) {
452 free(ent->r_reason);
453 ent->r_reason = NULL;
454 }
455
456 if (ent->trim_at != NULL) {
457 ptime_free(ent->trim_at);
458 ent->trim_at = NULL;
459 }
460
461 free(ent);
462}
463
464static void
465free_clist(struct cflist *list)
466{
467 struct conf_entry *ent;
468
469 while (!STAILQ_EMPTY(list)) {
470 ent = STAILQ_FIRST(list);
471 STAILQ_REMOVE_HEAD(list, cf_nextp);
472 free_entry(ent);
473 }
474
475 free(list);
476 list = NULL;
477}
478
479static fk_entry
480do_entry(struct conf_entry * ent)
481{
482#define REASON_MAX 80
483 int modtime;
484 fk_entry free_or_keep;
485 double diffsecs;
486 char temp_reason[REASON_MAX];
487 int oversized;
488
489 free_or_keep = FREE_ENT;
490 if (verbose)
491 printf("%s <%d%s>: ", ent->log, ent->numlogs,
492 compress_type[ent->compress].flag);
493 ent->fsize = sizefile(ent->log);
494 oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize));
495 modtime = age_old_log(ent->log);
496 ent->rotate = 0;
497 ent->firstcreate = 0;
498 if (ent->fsize < 0) {
499 /*
500 * If either the C flag or the -C option was specified,
501 * and if we won't be creating the file, then have the
502 * verbose message include a hint as to why the file
503 * will not be created.
504 */
505 temp_reason[0] = '\0';
506 if (createlogs > 1)
507 ent->firstcreate = 1;
508 else if ((ent->flags & CE_CREATE) && createlogs)
509 ent->firstcreate = 1;
510 else if (ent->flags & CE_CREATE)
511 strlcpy(temp_reason, " (no -C option)", REASON_MAX);
512 else if (createlogs)
513 strlcpy(temp_reason, " (no C flag)", REASON_MAX);
514
515 if (ent->firstcreate) {
516 if (verbose)
517 printf("does not exist -> will create.\n");
518 createlog(ent);
519 } else if (verbose) {
520 printf("does not exist, skipped%s.\n", temp_reason);
521 }
522 } else {
523 if (ent->flags & CE_TRIMAT && !force && !rotatereq &&
524 !oversized) {
525 diffsecs = ptimeget_diff(timenow, ent->trim_at);
526 if (diffsecs < 0.0) {
527 /* trim_at is some time in the future. */
528 if (verbose) {
529 ptime_adjust4dst(ent->trim_at,
530 timenow);
531 printf("--> will trim at %s",
532 ptimeget_ctime(ent->trim_at));
533 }
534 return (free_or_keep);
535 } else if (diffsecs >= 3600.0) {
536 /*
537 * trim_at is more than an hour in the past,
538 * so find the next valid trim_at time, and
539 * tell the user what that will be.
540 */
541 if (verbose && dbg_at_times)
542 printf("\n\t--> prev trim at %s\t",
543 ptimeget_ctime(ent->trim_at));
544 if (verbose) {
545 ptimeset_nxtime(ent->trim_at);
546 printf("--> will trim at %s",
547 ptimeget_ctime(ent->trim_at));
548 }
549 return (free_or_keep);
550 } else if (verbose && noaction && dbg_at_times) {
551 /*
552 * If we are just debugging at-times, then
553 * a detailed message is helpful. Also
554 * skip "doing" any commands, since they
555 * would all be turned off by no-action.
556 */
557 printf("\n\t--> timematch at %s",
558 ptimeget_ctime(ent->trim_at));
559 return (free_or_keep);
560 } else if (verbose && ent->hours <= 0) {
561 printf("--> time is up\n");
562 }
563 }
564 if (verbose && (ent->trsize > 0))
565 printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize);
566 if (verbose && (ent->hours > 0))
567 printf(" age (hr): %d [%d] ", modtime, ent->hours);
568
569 /*
570 * Figure out if this logfile needs to be rotated.
571 */
572 temp_reason[0] = '\0';
573 if (rotatereq) {
574 ent->rotate = 1;
575 snprintf(temp_reason, REASON_MAX, " due to -R from %s",
576 requestor);
577 } else if (force) {
578 ent->rotate = 1;
579 snprintf(temp_reason, REASON_MAX, " due to -F request");
580 } else if (oversized) {
581 ent->rotate = 1;
582 snprintf(temp_reason, REASON_MAX, " due to size>%dK",
583 ent->trsize);
584 } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) {
585 ent->rotate = 1;
586 } else if ((ent->hours > 0) && ((modtime >= ent->hours) ||
587 (modtime < 0))) {
588 ent->rotate = 1;
589 }
590
591 /*
592 * If the file needs to be rotated, then rotate it.
593 */
594 if (ent->rotate && !norotate) {
595 if (temp_reason[0] != '\0')
596 ent->r_reason = strdup(temp_reason);
597 if (verbose)
598 printf("--> trimming log....\n");
599 if (noaction && !verbose)
600 printf("%s <%d%s>: trimming\n", ent->log,
601 ent->numlogs,
602 compress_type[ent->compress].flag);
603 free_or_keep = do_rotate(ent);
604 } else {
605 if (verbose)
606 printf("--> skipping\n");
607 }
608 }
609 return (free_or_keep);
610#undef REASON_MAX
611}
612
613static void
614parse_args(int argc, char **argv)
615{
616 int ch;
617 char *p;
618
619 timenow = ptime_init(NULL);
620 ptimeset_time(timenow, time(NULL));
621 strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN);
622
623 /* Let's get our hostname */
624 (void)gethostname(hostname, sizeof(hostname));
625
626 /* Truncate domain */
627 if ((p = strchr(hostname, '.')) != NULL)
628 *p = '\0';
629
630 /* Parse command line options. */
631 while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1)
632 switch (ch) {
633 case 'a':
634 archtodir++;
635 archdirname = optarg;
636 break;
637 case 'd':
638 destdir = optarg;
639 break;
640 case 'f':
641 conf = optarg;
642 break;
643 case 'n':
644 noaction++;
645 break;
646 case 'r':
647 needroot = 0;
648 break;
649 case 's':
650 nosignal = 1;
651 break;
652 case 't':
653 if (optarg[0] == '\0' ||
654 strcmp(optarg, "DEFAULT") == 0)
655 timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT);
656 else
657 timefnamefmt = strdup(optarg);
658 break;
659 case 'v':
660 verbose++;
661 break;
662 case 'C':
663 /* Useful for things like rc.diskless... */
664 createlogs++;
665 break;
666 case 'D':
667 /*
668 * Set some debugging option. The specific option
669 * depends on the value of optarg. These options
670 * may come and go without notice or documentation.
671 */
672 if (parse_doption(optarg))
673 break;
674 usage();
675 /* NOTREACHED */
676 case 'F':
677 force++;
678 break;
679 case 'N':
680 norotate++;
681 break;
682 case 'P':
683 enforcepid++;
684 break;
685 case 'R':
686 rotatereq++;
687 requestor = strdup(optarg);
688 break;
689 case 'S':
690 path_syslogpid = optarg;
691 break;
692 case 'm': /* Used by OpenBSD for "monitor mode" */
693 default:
694 usage();
695 /* NOTREACHED */
696 }
697
698 if (force && norotate) {
699 warnx("Only one of -F and -N may be specified.");
700 usage();
701 /* NOTREACHED */
702 }
703
704 if (rotatereq) {
705 if (optind == argc) {
706 warnx("At least one filename must be given when -R is specified.");
707 usage();
708 /* NOTREACHED */
709 }
710 /* Make sure "requestor" value is safe for a syslog message. */
711 for (p = requestor; *p != '\0'; p++) {
712 if (!isprintch(*p) && (*p != '\t'))
713 *p = '.';
714 }
715 }
716
717 if (dbg_timenow) {
718 /*
719 * Note that the 'daytime' variable is not changed.
720 * That is only used in messages that track when a
721 * logfile is rotated, and if a file *is* rotated,
722 * then it will still rotated at the "real now" time.
723 */
724 ptime_free(timenow);
725 timenow = dbg_timenow;
726 fprintf(stderr, "Debug: Running as if TimeNow is %s",
727 ptimeget_ctime(dbg_timenow));
728 }
729
730}
731
732/*
733 * These debugging options are mainly meant for developer use, such
734 * as writing regression-tests. They would not be needed by users
735 * during normal operation of newsyslog...
736 */
737static int
738parse_doption(const char *doption)
739{
740 const char TN[] = "TN=";
741 int res;
742
743 if (strncmp(doption, TN, sizeof(TN) - 1) == 0) {
744 /*
745 * The "TimeNow" debugging option. This might be off
746 * by an hour when crossing a timezone change.
747 */
748 dbg_timenow = ptime_init(NULL);
749 res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601,
750 time(NULL), doption + sizeof(TN) - 1);
751 if (res == -2) {
752 warnx("Non-existent time specified on -D %s", doption);
753 return (0); /* failure */
754 } else if (res < 0) {
755 warnx("Malformed time given on -D %s", doption);
756 return (0); /* failure */
757 }
758 return (1); /* successfully parsed */
759
760 }
761
762 if (strcmp(doption, "ats") == 0) {
763 dbg_at_times++;
764 return (1); /* successfully parsed */
765 }
766
767 /* XXX - This check could probably be dropped. */
768 if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder")
769 == 0)) {
770 warnx("NOTE: newsyslog always uses 'neworder'.");
771 return (1); /* successfully parsed */
772 }
773
774 warnx("Unknown -D (debug) option: '%s'", doption);
775 return (0); /* failure */
776}
777
778static void
779usage(void)
780{
781
782 fprintf(stderr,
783 "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n"
784 " [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n");
785 exit(1);
786}
787
788/*
789 * Parse a configuration file and return a linked list of all the logs
790 * which should be processed.
791 */
792static struct cflist *
793get_worklist(char **files)
794{
795 FILE *f;
796 char **given;
797 struct cflist *cmdlist, *filelist, *globlist;
798 struct conf_entry *defconf, *dupent, *ent;
799 struct ilist inclist;
800 struct include_entry *inc;
801 int gmatch, fnres;
802
803 defconf = NULL;
804 STAILQ_INIT(&inclist);
805
806 filelist = malloc(sizeof(struct cflist));
807 if (filelist == NULL)
808 err(1, "malloc of filelist");
809 STAILQ_INIT(filelist);
810 globlist = malloc(sizeof(struct cflist));
811 if (globlist == NULL)
812 err(1, "malloc of globlist");
813 STAILQ_INIT(globlist);
814
815 inc = malloc(sizeof(struct include_entry));
816 if (inc == NULL)
817 err(1, "malloc of inc");
818 inc->file = conf;
819 if (inc->file == NULL)
820 inc->file = _PATH_CONF;
821 STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp);
822
823 STAILQ_FOREACH(inc, &inclist, inc_nextp) {
824 if (strcmp(inc->file, "-") != 0)
825 f = fopen(inc->file, "r");
826 else {
827 f = stdin;
828 inc->file = "<stdin>";
829 }
830 if (!f)
831 err(1, "%s", inc->file);
832
833 if (verbose)
834 printf("Processing %s\n", inc->file);
835 parse_file(f, filelist, globlist, defconf, &inclist);
836 (void) fclose(f);
837 }
838
839 /*
840 * All config-file information has been read in and turned into
841 * a filelist and a globlist. If there were no specific files
842 * given on the run command, then the only thing left to do is to
843 * call a routine which finds all files matched by the globlist
844 * and adds them to the filelist. Then return the worklist.
845 */
846 if (*files == NULL) {
847 expand_globs(filelist, globlist);
848 free_clist(globlist);
849 if (defconf != NULL)
850 free_entry(defconf);
851 return (filelist);
852 /* NOTREACHED */
853 }
854
855 /*
856 * If newsyslog was given a specific list of files to process,
857 * it may be that some of those files were not listed in any
858 * config file. Those unlisted files should get the default
859 * rotation action. First, create the default-rotation action
860 * if none was found in a system config file.
861 */
862 if (defconf == NULL) {
863 defconf = init_entry(DEFAULT_MARKER, NULL);
864 defconf->numlogs = 3;
865 defconf->trsize = 50;
866 defconf->permissions = S_IRUSR|S_IWUSR;
867 }
868
869 /*
870 * If newsyslog was run with a list of specific filenames,
871 * then create a new worklist which has only those files in
872 * it, picking up the rotation-rules for those files from
873 * the original filelist.
874 *
875 * XXX - Note that this will copy multiple rules for a single
876 * logfile, if multiple entries are an exact match for
877 * that file. That matches the historic behavior, but do
878 * we want to continue to allow it? If so, it should
879 * probably be handled more intelligently.
880 */
881 cmdlist = malloc(sizeof(struct cflist));
882 if (cmdlist == NULL)
883 err(1, "malloc of cmdlist");
884 STAILQ_INIT(cmdlist);
885
886 for (given = files; *given; ++given) {
887 /*
888 * First try to find exact-matches for this given file.
889 */
890 gmatch = 0;
891 STAILQ_FOREACH(ent, filelist, cf_nextp) {
892 if (strcmp(ent->log, *given) == 0) {
893 gmatch++;
894 dupent = init_entry(*given, ent);
895 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
896 }
897 }
898 if (gmatch) {
899 if (verbose > 2)
900 printf("\t+ Matched entry %s\n", *given);
901 continue;
902 }
903
904 /*
905 * There was no exact-match for this given file, so look
906 * for a "glob" entry which does match.
907 */
908 gmatch = 0;
909 if (verbose > 2 && globlist != NULL)
910 printf("\t+ Checking globs for %s\n", *given);
911 STAILQ_FOREACH(ent, globlist, cf_nextp) {
912 fnres = fnmatch(ent->log, *given, FNM_PATHNAME);
913 if (verbose > 2)
914 printf("\t+ = %d for pattern %s\n", fnres,
915 ent->log);
916 if (fnres == 0) {
917 gmatch++;
918 dupent = init_entry(*given, ent);
919 /* This new entry is not a glob! */
920 dupent->flags &= ~CE_GLOB;
921 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
922 /* Only allow a match to one glob-entry */
923 break;
924 }
925 }
926 if (gmatch) {
927 if (verbose > 2)
928 printf("\t+ Matched %s via %s\n", *given,
929 ent->log);
930 continue;
931 }
932
933 /*
934 * This given file was not found in any config file, so
935 * add a worklist item based on the default entry.
936 */
937 if (verbose > 2)
938 printf("\t+ No entry matched %s (will use %s)\n",
939 *given, DEFAULT_MARKER);
940 dupent = init_entry(*given, defconf);
941 /* Mark that it was *not* found in a config file */
942 dupent->def_cfg = 1;
943 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
944 }
945
946 /*
947 * Free all the entries in the original work list, the list of
948 * glob entries, and the default entry.
949 */
950 free_clist(filelist);
951 free_clist(globlist);
952 free_entry(defconf);
953
954 /* And finally, return a worklist which matches the given files. */
955 return (cmdlist);
956}
957
958/*
959 * Expand the list of entries with filename patterns, and add all files
960 * which match those glob-entries onto the worklist.
961 */
962static void
963expand_globs(struct cflist *work_p, struct cflist *glob_p)
964{
965 int gmatch, gres;
966 size_t i;
967 char *mfname;
968 struct conf_entry *dupent, *ent, *globent;
969 glob_t pglob;
970 struct stat st_fm;
971
972 /*
973 * The worklist contains all fully-specified (non-GLOB) names.
974 *
975 * Now expand the list of filename-pattern (GLOB) entries into
976 * a second list, which (by definition) will only match files
977 * that already exist. Do not add a glob-related entry for any
978 * file which already exists in the fully-specified list.
979 */
980 STAILQ_FOREACH(globent, glob_p, cf_nextp) {
981 gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob);
982 if (gres != 0) {
983 warn("cannot expand pattern (%d): %s", gres,
984 globent->log);
985 continue;
986 }
987
988 if (verbose > 2)
989 printf("\t+ Expanding pattern %s\n", globent->log);
990 for (i = 0; i < pglob.gl_matchc; i++) {
991 mfname = pglob.gl_pathv[i];
992
993 /* See if this file already has a specific entry. */
994 gmatch = 0;
995 STAILQ_FOREACH(ent, work_p, cf_nextp) {
996 if (strcmp(mfname, ent->log) == 0) {
997 gmatch++;
998 break;
999 }
1000 }
1001 if (gmatch)
1002 continue;
1003
1004 /* Make sure the named matched is a file. */
1005 gres = lstat(mfname, &st_fm);
1006 if (gres != 0) {
1007 /* Error on a file that glob() matched?!? */
1008 warn("Skipping %s - lstat() error", mfname);
1009 continue;
1010 }
1011 if (!S_ISREG(st_fm.st_mode)) {
1012 /* We only rotate files! */
1013 if (verbose > 2)
1014 printf("\t+ . skipping %s (!file)\n",
1015 mfname);
1016 continue;
1017 }
1018
1019 if (verbose > 2)
1020 printf("\t+ . add file %s\n", mfname);
1021 dupent = init_entry(mfname, globent);
1022 /* This new entry is not a glob! */
1023 dupent->flags &= ~CE_GLOB;
1024
1025 /* Add to the worklist. */
1026 STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp);
1027 }
1028 globfree(&pglob);
1029 if (verbose > 2)
1030 printf("\t+ Done with pattern %s\n", globent->log);
1031 }
1032}
1033
1034/*
1035 * Parse a configuration file and update a linked list of all the logs to
1036 * process.
1037 */
1038static void
1039parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
1040 struct conf_entry *defconf_p, struct ilist *inclist)
1041{
1042 char line[BUFSIZ], *parse, *q;
1043 char *cp, *errline, *group;
1044 struct conf_entry *working;
1045 struct passwd *pwd;
1046 struct group *grp;
1047 glob_t pglob;
1048 int eol, ptm_opts, res, special;
1049 size_t i;
1050
1051 errline = NULL;
1052 while (fgets(line, BUFSIZ, cf)) {
1053 if ((line[0] == '\n') || (line[0] == '#') ||
1054 (strlen(line) == 0))
1055 continue;
1056 if (errline != NULL)
1057 free(errline);
1058 errline = strdup(line);
1059 for (cp = line + 1; *cp != '\0'; cp++) {
1060 if (*cp != '#')
1061 continue;
1062 if (*(cp - 1) == '\\') {
1063 strcpy(cp - 1, cp);
1064 cp--;
1065 continue;
1066 }
1067 *cp = '\0';
1068 break;
1069 }
1070
1071 q = parse = missing_field(sob(line), errline);
1072 parse = son(line);
1073 if (!*parse)
1074 errx(1, "malformed line (missing fields):\n%s",
1075 errline);
1076 *parse = '\0';
1077
1078 /*
1079 * Allow people to set debug options via the config file.
1080 * (NOTE: debug options are undocumented, and may disappear
1081 * at any time, etc).
1082 */
1083 if (strcasecmp(DEBUG_MARKER, q) == 0) {
1084 q = parse = missing_field(sob(++parse), errline);
1085 parse = son(parse);
1086 if (!*parse)
1087 warnx("debug line specifies no option:\n%s",
1088 errline);
1089 else {
1090 *parse = '\0';
1091 parse_doption(q);
1092 }
1093 continue;
1094 } else if (strcasecmp(INCLUDE_MARKER, q) == 0) {
1095 if (verbose)
1096 printf("Found: %s", errline);
1097 q = parse = missing_field(sob(++parse), errline);
1098 parse = son(parse);
1099 if (!*parse) {
1100 warnx("include line missing argument:\n%s",
1101 errline);
1102 continue;
1103 }
1104
1105 *parse = '\0';
1106
1107 if (isglobstr(q)) {
1108 res = glob(q, GLOB_NOCHECK, NULL, &pglob);
1109 if (res != 0) {
1110 warn("cannot expand pattern (%d): %s",
1111 res, q);
1112 continue;
1113 }
1114
1115 if (verbose > 2)
1116 printf("\t+ Expanding pattern %s\n", q);
1117
1118 for (i = 0; i < pglob.gl_matchc; i++)
1119 add_to_queue(pglob.gl_pathv[i],
1120 inclist);
1121 globfree(&pglob);
1122 } else
1123 add_to_queue(q, inclist);
1124 continue;
1125 }
1126
1127 special = 0;
1128 working = init_entry(q, NULL);
1129 if (strcasecmp(DEFAULT_MARKER, q) == 0) {
1130 special = 1;
1131 if (defconf_p != NULL) {
1132 warnx("Ignoring duplicate entry for %s!", q);
1133 free_entry(working);
1134 continue;
1135 }
1136 defconf_p = working;
1137 }
1138
1139 q = parse = missing_field(sob(++parse), errline);
1140 parse = son(parse);
1141 if (!*parse)
1142 errx(1, "malformed line (missing fields):\n%s",
1143 errline);
1144 *parse = '\0';
1145 if ((group = strchr(q, ':')) != NULL ||
1146 (group = strrchr(q, '.')) != NULL) {
1147 *group++ = '\0';
1148 if (*q) {
1149 if (!(isnumberstr(q))) {
1150 if ((pwd = getpwnam(q)) == NULL)
1151 errx(1,
1152 "error in config file; unknown user:\n%s",
1153 errline);
1154 working->uid = pwd->pw_uid;
1155 } else
1156 working->uid = atoi(q);
1157 } else
1158 working->uid = (uid_t)-1;
1159
1160 q = group;
1161 if (*q) {
1162 if (!(isnumberstr(q))) {
1163 if ((grp = getgrnam(q)) == NULL)
1164 errx(1,
1165 "error in config file; unknown group:\n%s",
1166 errline);
1167 working->gid = grp->gr_gid;
1168 } else
1169 working->gid = atoi(q);
1170 } else
1171 working->gid = (gid_t)-1;
1172
1173 q = parse = missing_field(sob(++parse), errline);
1174 parse = son(parse);
1175 if (!*parse)
1176 errx(1, "malformed line (missing fields):\n%s",
1177 errline);
1178 *parse = '\0';
1179 } else {
1180 working->uid = (uid_t)-1;
1181 working->gid = (gid_t)-1;
1182 }
1183
1184 if (!sscanf(q, "%o", &working->permissions))
1185 errx(1, "error in config file; bad permissions:\n%s",
1186 errline);
1187
1188 q = parse = missing_field(sob(++parse), errline);
1189 parse = son(parse);
1190 if (!*parse)
1191 errx(1, "malformed line (missing fields):\n%s",
1192 errline);
1193 *parse = '\0';
1194 if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0)
1195 errx(1, "error in config file; bad value for count of logs to save:\n%s",
1196 errline);
1197
1198 q = parse = missing_field(sob(++parse), errline);
1199 parse = son(parse);
1200 if (!*parse)
1201 errx(1, "malformed line (missing fields):\n%s",
1202 errline);
1203 *parse = '\0';
1204 if (isdigitch(*q))
1205 working->trsize = atoi(q);
1206 else if (strcmp(q, "*") == 0)
1207 working->trsize = -1;
1208 else {
1209 warnx("Invalid value of '%s' for 'size' in line:\n%s",
1210 q, errline);
1211 working->trsize = -1;
1212 }
1213
1214 working->flags = 0;
1215 working->compress = COMPRESS_NONE;
1216 q = parse = missing_field(sob(++parse), errline);
1217 parse = son(parse);
1218 eol = !*parse;
1219 *parse = '\0';
1220 {
1221 char *ep;
1222 u_long ul;
1223
1224 ul = strtoul(q, &ep, 10);
1225 if (ep == q)
1226 working->hours = 0;
1227 else if (*ep == '*')
1228 working->hours = -1;
1229 else if (ul > INT_MAX)
1230 errx(1, "interval is too large:\n%s", errline);
1231 else
1232 working->hours = ul;
1233
1234 if (*ep == '\0' || strcmp(ep, "*") == 0)
1235 goto no_trimat;
1236 if (*ep != '@' && *ep != '$')
1237 errx(1, "malformed interval/at:\n%s", errline);
1238
1239 working->flags |= CE_TRIMAT;
1240 working->trim_at = ptime_init(NULL);
1241 ptm_opts = PTM_PARSE_ISO8601;
1242 if (*ep == '$')
1243 ptm_opts = PTM_PARSE_DWM;
1244 ptm_opts |= PTM_PARSE_MATCHDOM;
1245 res = ptime_relparse(working->trim_at, ptm_opts,
1246 ptimeget_secs(timenow), ep + 1);
1247 if (res == -2)
1248 errx(1, "nonexistent time for 'at' value:\n%s",
1249 errline);
1250 else if (res < 0)
1251 errx(1, "malformed 'at' value:\n%s", errline);
1252 }
1253no_trimat:
1254
1255 if (eol)
1256 q = NULL;
1257 else {
1258 q = parse = sob(++parse); /* Optional field */
1259 parse = son(parse);
1260 if (!*parse)
1261 eol = 1;
1262 *parse = '\0';
1263 }
1264
1265 for (; q && *q && !isspacech(*q); q++) {
1266 switch (tolowerch(*q)) {
1267 case 'b':
1268 working->flags |= CE_BINARY;
1269 break;
1270 case 'c':
1271 /*
1272 * XXX - Ick! Ugly! Remove ASAP!
1273 * We want `c' and `C' for "create". But we
1274 * will temporarily treat `c' as `g', because
1275 * FreeBSD releases <= 4.8 have a typo of
1276 * checking ('G' || 'c') for CE_GLOB.
1277 */
1278 if (*q == 'c') {
1279 warnx("Assuming 'g' for 'c' in flags for line:\n%s",
1280 errline);
1281 warnx("The 'c' flag will eventually mean 'CREATE'");
1282 working->flags |= CE_GLOB;
1283 break;
1284 }
1285 working->flags |= CE_CREATE;
1286 break;
1287 case 'd':
1288 working->flags |= CE_NODUMP;
1289 break;
1290 case 'g':
1291 working->flags |= CE_GLOB;
1292 break;
1293 case 'j':
1294 working->compress = COMPRESS_BZIP2;
1295 break;
1296 case 'n':
1297 working->flags |= CE_NOSIGNAL;
1298 break;
1299 case 'r':
1300 working->flags |= CE_PID2CMD;
1301 break;
1302 case 'u':
1303 working->flags |= CE_SIGNALGROUP;
1304 break;
1305 case 'w':
1306 /* Depreciated flag - keep for compatibility purposes */
1307 break;
1308 case 'x':
1309 working->compress = COMPRESS_XZ;
1310 break;
1311 case 'z':
1312 working->compress = COMPRESS_GZIP;
1313 break;
1314 case '-':
1315 break;
1316 case 'f': /* Used by OpenBSD for "CE_FOLLOW" */
1317 case 'm': /* Used by OpenBSD for "CE_MONITOR" */
1318 case 'p': /* Used by NetBSD for "CE_PLAIN0" */
1319 default:
1320 errx(1, "illegal flag in config file -- %c",
1321 *q);
1322 }
1323 }
1324
1325 if (eol)
1326 q = NULL;
1327 else {
1328 q = parse = sob(++parse); /* Optional field */
1329 parse = son(parse);
1330 if (!*parse)
1331 eol = 1;
1332 *parse = '\0';
1333 }
1334
1335 working->pid_cmd_file = NULL;
1336 if (q && *q) {
1337 if (*q == '/')
1338 working->pid_cmd_file = strdup(q);
1339 else if (isdigit(*q))
1340 goto got_sig;
1341 else
1342 errx(1,
1343 "illegal pid file or signal number in config file:\n%s",
1344 errline);
1345 }
1346 if (eol)
1347 q = NULL;
1348 else {
1349 q = parse = sob(++parse); /* Optional field */
1350 *(parse = son(parse)) = '\0';
1351 }
1352
1353 working->sig = SIGHUP;
1354 if (q && *q) {
1355 if (isdigit(*q)) {
1356 got_sig:
1357 working->sig = atoi(q);
1358 } else {
1359 err_sig:
1360 errx(1,
1361 "illegal signal number in config file:\n%s",
1362 errline);
1363 }
1364 if (working->sig < 1 || working->sig >= NSIG)
1365 goto err_sig;
1366 }
1367
1368 /*
1369 * Finish figuring out what pid-file to use (if any) in
1370 * later processing if this logfile needs to be rotated.
1371 */
1372 if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) {
1373 /*
1374 * This config-entry specified 'n' for nosignal,
1375 * see if it also specified an explicit pid_cmd_file.
1376 * This would be a pretty pointless combination.
1377 */
1378 if (working->pid_cmd_file != NULL) {
1379 warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s",
1380 working->pid_cmd_file, errline);
1381 free(working->pid_cmd_file);
1382 working->pid_cmd_file = NULL;
1383 }
1384 } else if (working->pid_cmd_file == NULL) {
1385 /*
1386 * This entry did not specify the 'n' flag, which
1387 * means it should signal syslogd unless it had
1388 * specified some other pid-file (and obviously the
1389 * syslog pid-file will not be for a process-group).
1390 * Also, we should only try to notify syslog if we
1391 * are root.
1392 */
1393 if (working->flags & CE_SIGNALGROUP) {
1394 warnx("Ignoring flag 'U' in line:\n%s",
1395 errline);
1396 working->flags &= ~CE_SIGNALGROUP;
1397 }
1398 if (needroot)
1399 working->pid_cmd_file = strdup(path_syslogpid);
1400 }
1401
1402 /*
1403 * Add this entry to the appropriate list of entries, unless
1404 * it was some kind of special entry (eg: <default>).
1405 */
1406 if (special) {
1407 ; /* Do not add to any list */
1408 } else if (working->flags & CE_GLOB) {
1409 STAILQ_INSERT_TAIL(glob_p, working, cf_nextp);
1410 } else {
1411 STAILQ_INSERT_TAIL(work_p, working, cf_nextp);
1412 }
1413 }
1414 if (errline != NULL)
1415 free(errline);
1416}
1417
1418static char *
1419missing_field(char *p, char *errline)
1420{
1421
1422 if (!p || !*p)
1423 errx(1, "missing field in config file:\n%s", errline);
1424 return (p);
1425}
1426
1427/*
1428 * In our sort we return it in the reverse of what qsort normally
1429 * would do, as we want the newest files first. If we have two
1430 * entries with the same time we don't really care about order.
1431 *
1432 * Support function for qsort() in delete_oldest_timelog().
1433 */
1434static int
1435oldlog_entry_compare(const void *a, const void *b)
1436{
1437 const struct oldlog_entry *ola = a, *olb = b;
1438
1439 if (ola->t > olb->t)
1440 return (-1);
1441 else if (ola->t < olb->t)
1442 return (1);
1443 else
1444 return (0);
1445}
1446
1447/*
1448 * Delete the oldest logfiles, when using time based filenames.
1449 */
1450static void
1451delete_oldest_timelog(const struct conf_entry *ent, const char *archive_dir)
1452{
1453 char *logfname, *s, *dir, errbuf[80];
| 58
59#define OSF
60
61#include <sys/param.h>
62#include <sys/queue.h>
63#include <sys/stat.h>
64#include <sys/wait.h>
65
66#include <assert.h>
67#include <ctype.h>
68#include <err.h>
69#include <errno.h>
70#include <dirent.h>
71#include <fcntl.h>
72#include <fnmatch.h>
73#include <glob.h>
74#include <grp.h>
75#include <paths.h>
76#include <pwd.h>
77#include <signal.h>
78#include <stdio.h>
79#include <libgen.h>
80#include <stdlib.h>
81#include <string.h>
82#include <time.h>
83#include <unistd.h>
84
85#include "pathnames.h"
86#include "extern.h"
87
88/*
89 * Compression suffixes
90 */
91#ifndef COMPRESS_SUFFIX_GZ
92#define COMPRESS_SUFFIX_GZ ".gz"
93#endif
94
95#ifndef COMPRESS_SUFFIX_BZ2
96#define COMPRESS_SUFFIX_BZ2 ".bz2"
97#endif
98
99#ifndef COMPRESS_SUFFIX_XZ
100#define COMPRESS_SUFFIX_XZ ".xz"
101#endif
102
103#define COMPRESS_SUFFIX_MAXLEN MAX(MAX(sizeof(COMPRESS_SUFFIX_GZ),sizeof(COMPRESS_SUFFIX_BZ2)),sizeof(COMPRESS_SUFFIX_XZ))
104
105/*
106 * Compression types
107 */
108#define COMPRESS_TYPES 4 /* Number of supported compression types */
109
110#define COMPRESS_NONE 0
111#define COMPRESS_GZIP 1
112#define COMPRESS_BZIP2 2
113#define COMPRESS_XZ 3
114
115/*
116 * Bit-values for the 'flags' parsed from a config-file entry.
117 */
118#define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */
119 /* messages to logfile(s) when rotating. */
120#define CE_NOSIGNAL 0x0010 /* There is no process to signal when */
121 /* trimming this file. */
122#define CE_TRIMAT 0x0020 /* trim file at a specific time. */
123#define CE_GLOB 0x0040 /* name of the log is file name pattern. */
124#define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */
125 /* process when trimming this file. */
126#define CE_CREATE 0x0100 /* Create the log file if it does not exist. */
127#define CE_NODUMP 0x0200 /* Set 'nodump' on newly created log file. */
128#define CE_PID2CMD 0x0400 /* Replace PID file with a shell command.*/
129
130#define MIN_PID 5 /* Don't touch pids lower than this */
131#define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */
132
133#define kbytes(size) (((size) + 1023) >> 10)
134
135#define DEFAULT_MARKER "<default>"
136#define DEBUG_MARKER "<debug>"
137#define INCLUDE_MARKER "<include>"
138#define DEFAULT_TIMEFNAME_FMT "%Y%m%dT%H%M%S"
139
140#define MAX_OLDLOGS 65536 /* Default maximum number of old logfiles */
141
142struct compress_types {
143 const char *flag; /* Flag in configuration file */
144 const char *suffix; /* Compression suffix */
145 const char *path; /* Path to compression program */
146};
147
148const struct compress_types compress_type[COMPRESS_TYPES] = {
149 { "", "", "" }, /* no compression */
150 { "Z", COMPRESS_SUFFIX_GZ, _PATH_GZIP }, /* gzip compression */
151 { "J", COMPRESS_SUFFIX_BZ2, _PATH_BZIP2 }, /* bzip2 compression */
152 { "X", COMPRESS_SUFFIX_XZ, _PATH_XZ } /* xz compression */
153};
154
155struct conf_entry {
156 STAILQ_ENTRY(conf_entry) cf_nextp;
157 char *log; /* Name of the log */
158 char *pid_cmd_file; /* PID or command file */
159 char *r_reason; /* The reason this file is being rotated */
160 int firstcreate; /* Creating log for the first time (-C). */
161 int rotate; /* Non-zero if this file should be rotated */
162 int fsize; /* size found for the log file */
163 uid_t uid; /* Owner of log */
164 gid_t gid; /* Group of log */
165 int numlogs; /* Number of logs to keep */
166 int trsize; /* Size cutoff to trigger trimming the log */
167 int hours; /* Hours between log trimming */
168 struct ptime_data *trim_at; /* Specific time to do trimming */
169 unsigned int permissions; /* File permissions on the log */
170 int flags; /* CE_BINARY */
171 int compress; /* Compression */
172 int sig; /* Signal to send */
173 int def_cfg; /* Using the <default> rule for this file */
174};
175
176struct sigwork_entry {
177 SLIST_ENTRY(sigwork_entry) sw_nextp;
178 int sw_signum; /* the signal to send */
179 int sw_pidok; /* true if pid value is valid */
180 pid_t sw_pid; /* the process id from the PID file */
181 const char *sw_pidtype; /* "daemon" or "process group" */
182 int run_cmd; /* run command or send PID to signal */
183 char sw_fname[1]; /* file the PID was read from or shell cmd */
184};
185
186struct zipwork_entry {
187 SLIST_ENTRY(zipwork_entry) zw_nextp;
188 const struct conf_entry *zw_conf; /* for chown/perm/flag info */
189 const struct sigwork_entry *zw_swork; /* to know success of signal */
190 int zw_fsize; /* size of the file to compress */
191 char zw_fname[1]; /* the file to compress */
192};
193
194struct include_entry {
195 STAILQ_ENTRY(include_entry) inc_nextp;
196 const char *file; /* Name of file to process */
197};
198
199struct oldlog_entry {
200 char *fname; /* Filename of the log file */
201 time_t t; /* Parsed timestamp of the logfile */
202};
203
204typedef enum {
205 FREE_ENT, KEEP_ENT
206} fk_entry;
207
208STAILQ_HEAD(cflist, conf_entry);
209SLIST_HEAD(swlisthead, sigwork_entry) swhead = SLIST_HEAD_INITIALIZER(swhead);
210SLIST_HEAD(zwlisthead, zipwork_entry) zwhead = SLIST_HEAD_INITIALIZER(zwhead);
211STAILQ_HEAD(ilist, include_entry);
212
213int dbg_at_times; /* -D Show details of 'trim_at' code */
214
215int archtodir = 0; /* Archive old logfiles to other directory */
216int createlogs; /* Create (non-GLOB) logfiles which do not */
217 /* already exist. 1=='for entries with */
218 /* C flag', 2=='for all entries'. */
219int verbose = 0; /* Print out what's going on */
220int needroot = 1; /* Root privs are necessary */
221int noaction = 0; /* Don't do anything, just show it */
222int norotate = 0; /* Don't rotate */
223int nosignal; /* Do not send any signals */
224int enforcepid = 0; /* If PID file does not exist or empty, do nothing */
225int force = 0; /* Force the trim no matter what */
226int rotatereq = 0; /* -R = Always rotate the file(s) as given */
227 /* on the command (this also requires */
228 /* that a list of files *are* given on */
229 /* the run command). */
230char *requestor; /* The name given on a -R request */
231char *timefnamefmt = NULL; /* Use time based filenames instead of .0 etc */
232char *archdirname; /* Directory path to old logfiles archive */
233char *destdir = NULL; /* Directory to treat at root for logs */
234const char *conf; /* Configuration file to use */
235
236struct ptime_data *dbg_timenow; /* A "timenow" value set via -D option */
237struct ptime_data *timenow; /* The time to use for checking at-fields */
238
239#define DAYTIME_LEN 16
240char daytime[DAYTIME_LEN]; /* The current time in human readable form,
241 * used for rotation-tracking messages. */
242char hostname[MAXHOSTNAMELEN]; /* hostname */
243
244const char *path_syslogpid = _PATH_SYSLOGPID;
245
246static struct cflist *get_worklist(char **files);
247static void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
248 struct conf_entry *defconf_p, struct ilist *inclist);
249static void add_to_queue(const char *fname, struct ilist *inclist);
250static char *sob(char *p);
251static char *son(char *p);
252static int isnumberstr(const char *);
253static int isglobstr(const char *);
254static char *missing_field(char *p, char *errline);
255static void change_attrs(const char *, const struct conf_entry *);
256static const char *get_logfile_suffix(const char *logfile);
257static fk_entry do_entry(struct conf_entry *);
258static fk_entry do_rotate(const struct conf_entry *);
259static void do_sigwork(struct sigwork_entry *);
260static void do_zipwork(struct zipwork_entry *);
261static struct sigwork_entry *
262 save_sigwork(const struct conf_entry *);
263static struct zipwork_entry *
264 save_zipwork(const struct conf_entry *, const struct
265 sigwork_entry *, int, const char *);
266static void set_swpid(struct sigwork_entry *, const struct conf_entry *);
267static int sizefile(const char *);
268static void expand_globs(struct cflist *work_p, struct cflist *glob_p);
269static void free_clist(struct cflist *list);
270static void free_entry(struct conf_entry *ent);
271static struct conf_entry *init_entry(const char *fname,
272 struct conf_entry *src_entry);
273static void parse_args(int argc, char **argv);
274static int parse_doption(const char *doption);
275static void usage(void);
276static int log_trim(const char *logname, const struct conf_entry *log_ent);
277static int age_old_log(char *file);
278static void savelog(char *from, char *to);
279static void createdir(const struct conf_entry *ent, char *dirpart);
280static void createlog(const struct conf_entry *ent);
281
282/*
283 * All the following take a parameter of 'int', but expect values in the
284 * range of unsigned char. Define wrappers which take values of type 'char',
285 * whether signed or unsigned, and ensure they end up in the right range.
286 */
287#define isdigitch(Anychar) isdigit((u_char)(Anychar))
288#define isprintch(Anychar) isprint((u_char)(Anychar))
289#define isspacech(Anychar) isspace((u_char)(Anychar))
290#define tolowerch(Anychar) tolower((u_char)(Anychar))
291
292int
293main(int argc, char **argv)
294{
295 struct cflist *worklist;
296 struct conf_entry *p;
297 struct sigwork_entry *stmp;
298 struct zipwork_entry *ztmp;
299
300 SLIST_INIT(&swhead);
301 SLIST_INIT(&zwhead);
302
303 parse_args(argc, argv);
304 argc -= optind;
305 argv += optind;
306
307 if (needroot && getuid() && geteuid())
308 errx(1, "must have root privs");
309 worklist = get_worklist(argv);
310
311 /*
312 * Rotate all the files which need to be rotated. Note that
313 * some users have *hundreds* of entries in newsyslog.conf!
314 */
315 while (!STAILQ_EMPTY(worklist)) {
316 p = STAILQ_FIRST(worklist);
317 STAILQ_REMOVE_HEAD(worklist, cf_nextp);
318 if (do_entry(p) == FREE_ENT)
319 free_entry(p);
320 }
321
322 /*
323 * Send signals to any processes which need a signal to tell
324 * them to close and re-open the log file(s) we have rotated.
325 * Note that zipwork_entries include pointers to these
326 * sigwork_entry's, so we can not free the entries here.
327 */
328 if (!SLIST_EMPTY(&swhead)) {
329 if (noaction || verbose)
330 printf("Signal all daemon process(es)...\n");
331 SLIST_FOREACH(stmp, &swhead, sw_nextp)
332 do_sigwork(stmp);
333 if (noaction)
334 printf("\tsleep 10\n");
335 else {
336 if (verbose)
337 printf("Pause 10 seconds to allow daemon(s)"
338 " to close log file(s)\n");
339 sleep(10);
340 }
341 }
342 /*
343 * Compress all files that we're expected to compress, now
344 * that all processes should have closed the files which
345 * have been rotated.
346 */
347 if (!SLIST_EMPTY(&zwhead)) {
348 if (noaction || verbose)
349 printf("Compress all rotated log file(s)...\n");
350 while (!SLIST_EMPTY(&zwhead)) {
351 ztmp = SLIST_FIRST(&zwhead);
352 do_zipwork(ztmp);
353 SLIST_REMOVE_HEAD(&zwhead, zw_nextp);
354 free(ztmp);
355 }
356 }
357 /* Now free all the sigwork entries. */
358 while (!SLIST_EMPTY(&swhead)) {
359 stmp = SLIST_FIRST(&swhead);
360 SLIST_REMOVE_HEAD(&swhead, sw_nextp);
361 free(stmp);
362 }
363
364 while (wait(NULL) > 0 || errno == EINTR)
365 ;
366 return (0);
367}
368
369static struct conf_entry *
370init_entry(const char *fname, struct conf_entry *src_entry)
371{
372 struct conf_entry *tempwork;
373
374 if (verbose > 4)
375 printf("\t--> [creating entry for %s]\n", fname);
376
377 tempwork = malloc(sizeof(struct conf_entry));
378 if (tempwork == NULL)
379 err(1, "malloc of conf_entry for %s", fname);
380
381 if (destdir == NULL || fname[0] != '/')
382 tempwork->log = strdup(fname);
383 else
384 asprintf(&tempwork->log, "%s%s", destdir, fname);
385 if (tempwork->log == NULL)
386 err(1, "strdup for %s", fname);
387
388 if (src_entry != NULL) {
389 tempwork->pid_cmd_file = NULL;
390 if (src_entry->pid_cmd_file)
391 tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file);
392 tempwork->r_reason = NULL;
393 tempwork->firstcreate = 0;
394 tempwork->rotate = 0;
395 tempwork->fsize = -1;
396 tempwork->uid = src_entry->uid;
397 tempwork->gid = src_entry->gid;
398 tempwork->numlogs = src_entry->numlogs;
399 tempwork->trsize = src_entry->trsize;
400 tempwork->hours = src_entry->hours;
401 tempwork->trim_at = NULL;
402 if (src_entry->trim_at != NULL)
403 tempwork->trim_at = ptime_init(src_entry->trim_at);
404 tempwork->permissions = src_entry->permissions;
405 tempwork->flags = src_entry->flags;
406 tempwork->compress = src_entry->compress;
407 tempwork->sig = src_entry->sig;
408 tempwork->def_cfg = src_entry->def_cfg;
409 } else {
410 /* Initialize as a "do-nothing" entry */
411 tempwork->pid_cmd_file = NULL;
412 tempwork->r_reason = NULL;
413 tempwork->firstcreate = 0;
414 tempwork->rotate = 0;
415 tempwork->fsize = -1;
416 tempwork->uid = (uid_t)-1;
417 tempwork->gid = (gid_t)-1;
418 tempwork->numlogs = 1;
419 tempwork->trsize = -1;
420 tempwork->hours = -1;
421 tempwork->trim_at = NULL;
422 tempwork->permissions = 0;
423 tempwork->flags = 0;
424 tempwork->compress = COMPRESS_NONE;
425 tempwork->sig = SIGHUP;
426 tempwork->def_cfg = 0;
427 }
428
429 return (tempwork);
430}
431
432static void
433free_entry(struct conf_entry *ent)
434{
435
436 if (ent == NULL)
437 return;
438
439 if (ent->log != NULL) {
440 if (verbose > 4)
441 printf("\t--> [freeing entry for %s]\n", ent->log);
442 free(ent->log);
443 ent->log = NULL;
444 }
445
446 if (ent->pid_cmd_file != NULL) {
447 free(ent->pid_cmd_file);
448 ent->pid_cmd_file = NULL;
449 }
450
451 if (ent->r_reason != NULL) {
452 free(ent->r_reason);
453 ent->r_reason = NULL;
454 }
455
456 if (ent->trim_at != NULL) {
457 ptime_free(ent->trim_at);
458 ent->trim_at = NULL;
459 }
460
461 free(ent);
462}
463
464static void
465free_clist(struct cflist *list)
466{
467 struct conf_entry *ent;
468
469 while (!STAILQ_EMPTY(list)) {
470 ent = STAILQ_FIRST(list);
471 STAILQ_REMOVE_HEAD(list, cf_nextp);
472 free_entry(ent);
473 }
474
475 free(list);
476 list = NULL;
477}
478
479static fk_entry
480do_entry(struct conf_entry * ent)
481{
482#define REASON_MAX 80
483 int modtime;
484 fk_entry free_or_keep;
485 double diffsecs;
486 char temp_reason[REASON_MAX];
487 int oversized;
488
489 free_or_keep = FREE_ENT;
490 if (verbose)
491 printf("%s <%d%s>: ", ent->log, ent->numlogs,
492 compress_type[ent->compress].flag);
493 ent->fsize = sizefile(ent->log);
494 oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize));
495 modtime = age_old_log(ent->log);
496 ent->rotate = 0;
497 ent->firstcreate = 0;
498 if (ent->fsize < 0) {
499 /*
500 * If either the C flag or the -C option was specified,
501 * and if we won't be creating the file, then have the
502 * verbose message include a hint as to why the file
503 * will not be created.
504 */
505 temp_reason[0] = '\0';
506 if (createlogs > 1)
507 ent->firstcreate = 1;
508 else if ((ent->flags & CE_CREATE) && createlogs)
509 ent->firstcreate = 1;
510 else if (ent->flags & CE_CREATE)
511 strlcpy(temp_reason, " (no -C option)", REASON_MAX);
512 else if (createlogs)
513 strlcpy(temp_reason, " (no C flag)", REASON_MAX);
514
515 if (ent->firstcreate) {
516 if (verbose)
517 printf("does not exist -> will create.\n");
518 createlog(ent);
519 } else if (verbose) {
520 printf("does not exist, skipped%s.\n", temp_reason);
521 }
522 } else {
523 if (ent->flags & CE_TRIMAT && !force && !rotatereq &&
524 !oversized) {
525 diffsecs = ptimeget_diff(timenow, ent->trim_at);
526 if (diffsecs < 0.0) {
527 /* trim_at is some time in the future. */
528 if (verbose) {
529 ptime_adjust4dst(ent->trim_at,
530 timenow);
531 printf("--> will trim at %s",
532 ptimeget_ctime(ent->trim_at));
533 }
534 return (free_or_keep);
535 } else if (diffsecs >= 3600.0) {
536 /*
537 * trim_at is more than an hour in the past,
538 * so find the next valid trim_at time, and
539 * tell the user what that will be.
540 */
541 if (verbose && dbg_at_times)
542 printf("\n\t--> prev trim at %s\t",
543 ptimeget_ctime(ent->trim_at));
544 if (verbose) {
545 ptimeset_nxtime(ent->trim_at);
546 printf("--> will trim at %s",
547 ptimeget_ctime(ent->trim_at));
548 }
549 return (free_or_keep);
550 } else if (verbose && noaction && dbg_at_times) {
551 /*
552 * If we are just debugging at-times, then
553 * a detailed message is helpful. Also
554 * skip "doing" any commands, since they
555 * would all be turned off by no-action.
556 */
557 printf("\n\t--> timematch at %s",
558 ptimeget_ctime(ent->trim_at));
559 return (free_or_keep);
560 } else if (verbose && ent->hours <= 0) {
561 printf("--> time is up\n");
562 }
563 }
564 if (verbose && (ent->trsize > 0))
565 printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize);
566 if (verbose && (ent->hours > 0))
567 printf(" age (hr): %d [%d] ", modtime, ent->hours);
568
569 /*
570 * Figure out if this logfile needs to be rotated.
571 */
572 temp_reason[0] = '\0';
573 if (rotatereq) {
574 ent->rotate = 1;
575 snprintf(temp_reason, REASON_MAX, " due to -R from %s",
576 requestor);
577 } else if (force) {
578 ent->rotate = 1;
579 snprintf(temp_reason, REASON_MAX, " due to -F request");
580 } else if (oversized) {
581 ent->rotate = 1;
582 snprintf(temp_reason, REASON_MAX, " due to size>%dK",
583 ent->trsize);
584 } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) {
585 ent->rotate = 1;
586 } else if ((ent->hours > 0) && ((modtime >= ent->hours) ||
587 (modtime < 0))) {
588 ent->rotate = 1;
589 }
590
591 /*
592 * If the file needs to be rotated, then rotate it.
593 */
594 if (ent->rotate && !norotate) {
595 if (temp_reason[0] != '\0')
596 ent->r_reason = strdup(temp_reason);
597 if (verbose)
598 printf("--> trimming log....\n");
599 if (noaction && !verbose)
600 printf("%s <%d%s>: trimming\n", ent->log,
601 ent->numlogs,
602 compress_type[ent->compress].flag);
603 free_or_keep = do_rotate(ent);
604 } else {
605 if (verbose)
606 printf("--> skipping\n");
607 }
608 }
609 return (free_or_keep);
610#undef REASON_MAX
611}
612
613static void
614parse_args(int argc, char **argv)
615{
616 int ch;
617 char *p;
618
619 timenow = ptime_init(NULL);
620 ptimeset_time(timenow, time(NULL));
621 strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN);
622
623 /* Let's get our hostname */
624 (void)gethostname(hostname, sizeof(hostname));
625
626 /* Truncate domain */
627 if ((p = strchr(hostname, '.')) != NULL)
628 *p = '\0';
629
630 /* Parse command line options. */
631 while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1)
632 switch (ch) {
633 case 'a':
634 archtodir++;
635 archdirname = optarg;
636 break;
637 case 'd':
638 destdir = optarg;
639 break;
640 case 'f':
641 conf = optarg;
642 break;
643 case 'n':
644 noaction++;
645 break;
646 case 'r':
647 needroot = 0;
648 break;
649 case 's':
650 nosignal = 1;
651 break;
652 case 't':
653 if (optarg[0] == '\0' ||
654 strcmp(optarg, "DEFAULT") == 0)
655 timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT);
656 else
657 timefnamefmt = strdup(optarg);
658 break;
659 case 'v':
660 verbose++;
661 break;
662 case 'C':
663 /* Useful for things like rc.diskless... */
664 createlogs++;
665 break;
666 case 'D':
667 /*
668 * Set some debugging option. The specific option
669 * depends on the value of optarg. These options
670 * may come and go without notice or documentation.
671 */
672 if (parse_doption(optarg))
673 break;
674 usage();
675 /* NOTREACHED */
676 case 'F':
677 force++;
678 break;
679 case 'N':
680 norotate++;
681 break;
682 case 'P':
683 enforcepid++;
684 break;
685 case 'R':
686 rotatereq++;
687 requestor = strdup(optarg);
688 break;
689 case 'S':
690 path_syslogpid = optarg;
691 break;
692 case 'm': /* Used by OpenBSD for "monitor mode" */
693 default:
694 usage();
695 /* NOTREACHED */
696 }
697
698 if (force && norotate) {
699 warnx("Only one of -F and -N may be specified.");
700 usage();
701 /* NOTREACHED */
702 }
703
704 if (rotatereq) {
705 if (optind == argc) {
706 warnx("At least one filename must be given when -R is specified.");
707 usage();
708 /* NOTREACHED */
709 }
710 /* Make sure "requestor" value is safe for a syslog message. */
711 for (p = requestor; *p != '\0'; p++) {
712 if (!isprintch(*p) && (*p != '\t'))
713 *p = '.';
714 }
715 }
716
717 if (dbg_timenow) {
718 /*
719 * Note that the 'daytime' variable is not changed.
720 * That is only used in messages that track when a
721 * logfile is rotated, and if a file *is* rotated,
722 * then it will still rotated at the "real now" time.
723 */
724 ptime_free(timenow);
725 timenow = dbg_timenow;
726 fprintf(stderr, "Debug: Running as if TimeNow is %s",
727 ptimeget_ctime(dbg_timenow));
728 }
729
730}
731
732/*
733 * These debugging options are mainly meant for developer use, such
734 * as writing regression-tests. They would not be needed by users
735 * during normal operation of newsyslog...
736 */
737static int
738parse_doption(const char *doption)
739{
740 const char TN[] = "TN=";
741 int res;
742
743 if (strncmp(doption, TN, sizeof(TN) - 1) == 0) {
744 /*
745 * The "TimeNow" debugging option. This might be off
746 * by an hour when crossing a timezone change.
747 */
748 dbg_timenow = ptime_init(NULL);
749 res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601,
750 time(NULL), doption + sizeof(TN) - 1);
751 if (res == -2) {
752 warnx("Non-existent time specified on -D %s", doption);
753 return (0); /* failure */
754 } else if (res < 0) {
755 warnx("Malformed time given on -D %s", doption);
756 return (0); /* failure */
757 }
758 return (1); /* successfully parsed */
759
760 }
761
762 if (strcmp(doption, "ats") == 0) {
763 dbg_at_times++;
764 return (1); /* successfully parsed */
765 }
766
767 /* XXX - This check could probably be dropped. */
768 if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder")
769 == 0)) {
770 warnx("NOTE: newsyslog always uses 'neworder'.");
771 return (1); /* successfully parsed */
772 }
773
774 warnx("Unknown -D (debug) option: '%s'", doption);
775 return (0); /* failure */
776}
777
778static void
779usage(void)
780{
781
782 fprintf(stderr,
783 "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n"
784 " [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n");
785 exit(1);
786}
787
788/*
789 * Parse a configuration file and return a linked list of all the logs
790 * which should be processed.
791 */
792static struct cflist *
793get_worklist(char **files)
794{
795 FILE *f;
796 char **given;
797 struct cflist *cmdlist, *filelist, *globlist;
798 struct conf_entry *defconf, *dupent, *ent;
799 struct ilist inclist;
800 struct include_entry *inc;
801 int gmatch, fnres;
802
803 defconf = NULL;
804 STAILQ_INIT(&inclist);
805
806 filelist = malloc(sizeof(struct cflist));
807 if (filelist == NULL)
808 err(1, "malloc of filelist");
809 STAILQ_INIT(filelist);
810 globlist = malloc(sizeof(struct cflist));
811 if (globlist == NULL)
812 err(1, "malloc of globlist");
813 STAILQ_INIT(globlist);
814
815 inc = malloc(sizeof(struct include_entry));
816 if (inc == NULL)
817 err(1, "malloc of inc");
818 inc->file = conf;
819 if (inc->file == NULL)
820 inc->file = _PATH_CONF;
821 STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp);
822
823 STAILQ_FOREACH(inc, &inclist, inc_nextp) {
824 if (strcmp(inc->file, "-") != 0)
825 f = fopen(inc->file, "r");
826 else {
827 f = stdin;
828 inc->file = "<stdin>";
829 }
830 if (!f)
831 err(1, "%s", inc->file);
832
833 if (verbose)
834 printf("Processing %s\n", inc->file);
835 parse_file(f, filelist, globlist, defconf, &inclist);
836 (void) fclose(f);
837 }
838
839 /*
840 * All config-file information has been read in and turned into
841 * a filelist and a globlist. If there were no specific files
842 * given on the run command, then the only thing left to do is to
843 * call a routine which finds all files matched by the globlist
844 * and adds them to the filelist. Then return the worklist.
845 */
846 if (*files == NULL) {
847 expand_globs(filelist, globlist);
848 free_clist(globlist);
849 if (defconf != NULL)
850 free_entry(defconf);
851 return (filelist);
852 /* NOTREACHED */
853 }
854
855 /*
856 * If newsyslog was given a specific list of files to process,
857 * it may be that some of those files were not listed in any
858 * config file. Those unlisted files should get the default
859 * rotation action. First, create the default-rotation action
860 * if none was found in a system config file.
861 */
862 if (defconf == NULL) {
863 defconf = init_entry(DEFAULT_MARKER, NULL);
864 defconf->numlogs = 3;
865 defconf->trsize = 50;
866 defconf->permissions = S_IRUSR|S_IWUSR;
867 }
868
869 /*
870 * If newsyslog was run with a list of specific filenames,
871 * then create a new worklist which has only those files in
872 * it, picking up the rotation-rules for those files from
873 * the original filelist.
874 *
875 * XXX - Note that this will copy multiple rules for a single
876 * logfile, if multiple entries are an exact match for
877 * that file. That matches the historic behavior, but do
878 * we want to continue to allow it? If so, it should
879 * probably be handled more intelligently.
880 */
881 cmdlist = malloc(sizeof(struct cflist));
882 if (cmdlist == NULL)
883 err(1, "malloc of cmdlist");
884 STAILQ_INIT(cmdlist);
885
886 for (given = files; *given; ++given) {
887 /*
888 * First try to find exact-matches for this given file.
889 */
890 gmatch = 0;
891 STAILQ_FOREACH(ent, filelist, cf_nextp) {
892 if (strcmp(ent->log, *given) == 0) {
893 gmatch++;
894 dupent = init_entry(*given, ent);
895 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
896 }
897 }
898 if (gmatch) {
899 if (verbose > 2)
900 printf("\t+ Matched entry %s\n", *given);
901 continue;
902 }
903
904 /*
905 * There was no exact-match for this given file, so look
906 * for a "glob" entry which does match.
907 */
908 gmatch = 0;
909 if (verbose > 2 && globlist != NULL)
910 printf("\t+ Checking globs for %s\n", *given);
911 STAILQ_FOREACH(ent, globlist, cf_nextp) {
912 fnres = fnmatch(ent->log, *given, FNM_PATHNAME);
913 if (verbose > 2)
914 printf("\t+ = %d for pattern %s\n", fnres,
915 ent->log);
916 if (fnres == 0) {
917 gmatch++;
918 dupent = init_entry(*given, ent);
919 /* This new entry is not a glob! */
920 dupent->flags &= ~CE_GLOB;
921 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
922 /* Only allow a match to one glob-entry */
923 break;
924 }
925 }
926 if (gmatch) {
927 if (verbose > 2)
928 printf("\t+ Matched %s via %s\n", *given,
929 ent->log);
930 continue;
931 }
932
933 /*
934 * This given file was not found in any config file, so
935 * add a worklist item based on the default entry.
936 */
937 if (verbose > 2)
938 printf("\t+ No entry matched %s (will use %s)\n",
939 *given, DEFAULT_MARKER);
940 dupent = init_entry(*given, defconf);
941 /* Mark that it was *not* found in a config file */
942 dupent->def_cfg = 1;
943 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
944 }
945
946 /*
947 * Free all the entries in the original work list, the list of
948 * glob entries, and the default entry.
949 */
950 free_clist(filelist);
951 free_clist(globlist);
952 free_entry(defconf);
953
954 /* And finally, return a worklist which matches the given files. */
955 return (cmdlist);
956}
957
958/*
959 * Expand the list of entries with filename patterns, and add all files
960 * which match those glob-entries onto the worklist.
961 */
962static void
963expand_globs(struct cflist *work_p, struct cflist *glob_p)
964{
965 int gmatch, gres;
966 size_t i;
967 char *mfname;
968 struct conf_entry *dupent, *ent, *globent;
969 glob_t pglob;
970 struct stat st_fm;
971
972 /*
973 * The worklist contains all fully-specified (non-GLOB) names.
974 *
975 * Now expand the list of filename-pattern (GLOB) entries into
976 * a second list, which (by definition) will only match files
977 * that already exist. Do not add a glob-related entry for any
978 * file which already exists in the fully-specified list.
979 */
980 STAILQ_FOREACH(globent, glob_p, cf_nextp) {
981 gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob);
982 if (gres != 0) {
983 warn("cannot expand pattern (%d): %s", gres,
984 globent->log);
985 continue;
986 }
987
988 if (verbose > 2)
989 printf("\t+ Expanding pattern %s\n", globent->log);
990 for (i = 0; i < pglob.gl_matchc; i++) {
991 mfname = pglob.gl_pathv[i];
992
993 /* See if this file already has a specific entry. */
994 gmatch = 0;
995 STAILQ_FOREACH(ent, work_p, cf_nextp) {
996 if (strcmp(mfname, ent->log) == 0) {
997 gmatch++;
998 break;
999 }
1000 }
1001 if (gmatch)
1002 continue;
1003
1004 /* Make sure the named matched is a file. */
1005 gres = lstat(mfname, &st_fm);
1006 if (gres != 0) {
1007 /* Error on a file that glob() matched?!? */
1008 warn("Skipping %s - lstat() error", mfname);
1009 continue;
1010 }
1011 if (!S_ISREG(st_fm.st_mode)) {
1012 /* We only rotate files! */
1013 if (verbose > 2)
1014 printf("\t+ . skipping %s (!file)\n",
1015 mfname);
1016 continue;
1017 }
1018
1019 if (verbose > 2)
1020 printf("\t+ . add file %s\n", mfname);
1021 dupent = init_entry(mfname, globent);
1022 /* This new entry is not a glob! */
1023 dupent->flags &= ~CE_GLOB;
1024
1025 /* Add to the worklist. */
1026 STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp);
1027 }
1028 globfree(&pglob);
1029 if (verbose > 2)
1030 printf("\t+ Done with pattern %s\n", globent->log);
1031 }
1032}
1033
1034/*
1035 * Parse a configuration file and update a linked list of all the logs to
1036 * process.
1037 */
1038static void
1039parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
1040 struct conf_entry *defconf_p, struct ilist *inclist)
1041{
1042 char line[BUFSIZ], *parse, *q;
1043 char *cp, *errline, *group;
1044 struct conf_entry *working;
1045 struct passwd *pwd;
1046 struct group *grp;
1047 glob_t pglob;
1048 int eol, ptm_opts, res, special;
1049 size_t i;
1050
1051 errline = NULL;
1052 while (fgets(line, BUFSIZ, cf)) {
1053 if ((line[0] == '\n') || (line[0] == '#') ||
1054 (strlen(line) == 0))
1055 continue;
1056 if (errline != NULL)
1057 free(errline);
1058 errline = strdup(line);
1059 for (cp = line + 1; *cp != '\0'; cp++) {
1060 if (*cp != '#')
1061 continue;
1062 if (*(cp - 1) == '\\') {
1063 strcpy(cp - 1, cp);
1064 cp--;
1065 continue;
1066 }
1067 *cp = '\0';
1068 break;
1069 }
1070
1071 q = parse = missing_field(sob(line), errline);
1072 parse = son(line);
1073 if (!*parse)
1074 errx(1, "malformed line (missing fields):\n%s",
1075 errline);
1076 *parse = '\0';
1077
1078 /*
1079 * Allow people to set debug options via the config file.
1080 * (NOTE: debug options are undocumented, and may disappear
1081 * at any time, etc).
1082 */
1083 if (strcasecmp(DEBUG_MARKER, q) == 0) {
1084 q = parse = missing_field(sob(++parse), errline);
1085 parse = son(parse);
1086 if (!*parse)
1087 warnx("debug line specifies no option:\n%s",
1088 errline);
1089 else {
1090 *parse = '\0';
1091 parse_doption(q);
1092 }
1093 continue;
1094 } else if (strcasecmp(INCLUDE_MARKER, q) == 0) {
1095 if (verbose)
1096 printf("Found: %s", errline);
1097 q = parse = missing_field(sob(++parse), errline);
1098 parse = son(parse);
1099 if (!*parse) {
1100 warnx("include line missing argument:\n%s",
1101 errline);
1102 continue;
1103 }
1104
1105 *parse = '\0';
1106
1107 if (isglobstr(q)) {
1108 res = glob(q, GLOB_NOCHECK, NULL, &pglob);
1109 if (res != 0) {
1110 warn("cannot expand pattern (%d): %s",
1111 res, q);
1112 continue;
1113 }
1114
1115 if (verbose > 2)
1116 printf("\t+ Expanding pattern %s\n", q);
1117
1118 for (i = 0; i < pglob.gl_matchc; i++)
1119 add_to_queue(pglob.gl_pathv[i],
1120 inclist);
1121 globfree(&pglob);
1122 } else
1123 add_to_queue(q, inclist);
1124 continue;
1125 }
1126
1127 special = 0;
1128 working = init_entry(q, NULL);
1129 if (strcasecmp(DEFAULT_MARKER, q) == 0) {
1130 special = 1;
1131 if (defconf_p != NULL) {
1132 warnx("Ignoring duplicate entry for %s!", q);
1133 free_entry(working);
1134 continue;
1135 }
1136 defconf_p = working;
1137 }
1138
1139 q = parse = missing_field(sob(++parse), errline);
1140 parse = son(parse);
1141 if (!*parse)
1142 errx(1, "malformed line (missing fields):\n%s",
1143 errline);
1144 *parse = '\0';
1145 if ((group = strchr(q, ':')) != NULL ||
1146 (group = strrchr(q, '.')) != NULL) {
1147 *group++ = '\0';
1148 if (*q) {
1149 if (!(isnumberstr(q))) {
1150 if ((pwd = getpwnam(q)) == NULL)
1151 errx(1,
1152 "error in config file; unknown user:\n%s",
1153 errline);
1154 working->uid = pwd->pw_uid;
1155 } else
1156 working->uid = atoi(q);
1157 } else
1158 working->uid = (uid_t)-1;
1159
1160 q = group;
1161 if (*q) {
1162 if (!(isnumberstr(q))) {
1163 if ((grp = getgrnam(q)) == NULL)
1164 errx(1,
1165 "error in config file; unknown group:\n%s",
1166 errline);
1167 working->gid = grp->gr_gid;
1168 } else
1169 working->gid = atoi(q);
1170 } else
1171 working->gid = (gid_t)-1;
1172
1173 q = parse = missing_field(sob(++parse), errline);
1174 parse = son(parse);
1175 if (!*parse)
1176 errx(1, "malformed line (missing fields):\n%s",
1177 errline);
1178 *parse = '\0';
1179 } else {
1180 working->uid = (uid_t)-1;
1181 working->gid = (gid_t)-1;
1182 }
1183
1184 if (!sscanf(q, "%o", &working->permissions))
1185 errx(1, "error in config file; bad permissions:\n%s",
1186 errline);
1187
1188 q = parse = missing_field(sob(++parse), errline);
1189 parse = son(parse);
1190 if (!*parse)
1191 errx(1, "malformed line (missing fields):\n%s",
1192 errline);
1193 *parse = '\0';
1194 if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0)
1195 errx(1, "error in config file; bad value for count of logs to save:\n%s",
1196 errline);
1197
1198 q = parse = missing_field(sob(++parse), errline);
1199 parse = son(parse);
1200 if (!*parse)
1201 errx(1, "malformed line (missing fields):\n%s",
1202 errline);
1203 *parse = '\0';
1204 if (isdigitch(*q))
1205 working->trsize = atoi(q);
1206 else if (strcmp(q, "*") == 0)
1207 working->trsize = -1;
1208 else {
1209 warnx("Invalid value of '%s' for 'size' in line:\n%s",
1210 q, errline);
1211 working->trsize = -1;
1212 }
1213
1214 working->flags = 0;
1215 working->compress = COMPRESS_NONE;
1216 q = parse = missing_field(sob(++parse), errline);
1217 parse = son(parse);
1218 eol = !*parse;
1219 *parse = '\0';
1220 {
1221 char *ep;
1222 u_long ul;
1223
1224 ul = strtoul(q, &ep, 10);
1225 if (ep == q)
1226 working->hours = 0;
1227 else if (*ep == '*')
1228 working->hours = -1;
1229 else if (ul > INT_MAX)
1230 errx(1, "interval is too large:\n%s", errline);
1231 else
1232 working->hours = ul;
1233
1234 if (*ep == '\0' || strcmp(ep, "*") == 0)
1235 goto no_trimat;
1236 if (*ep != '@' && *ep != '$')
1237 errx(1, "malformed interval/at:\n%s", errline);
1238
1239 working->flags |= CE_TRIMAT;
1240 working->trim_at = ptime_init(NULL);
1241 ptm_opts = PTM_PARSE_ISO8601;
1242 if (*ep == '$')
1243 ptm_opts = PTM_PARSE_DWM;
1244 ptm_opts |= PTM_PARSE_MATCHDOM;
1245 res = ptime_relparse(working->trim_at, ptm_opts,
1246 ptimeget_secs(timenow), ep + 1);
1247 if (res == -2)
1248 errx(1, "nonexistent time for 'at' value:\n%s",
1249 errline);
1250 else if (res < 0)
1251 errx(1, "malformed 'at' value:\n%s", errline);
1252 }
1253no_trimat:
1254
1255 if (eol)
1256 q = NULL;
1257 else {
1258 q = parse = sob(++parse); /* Optional field */
1259 parse = son(parse);
1260 if (!*parse)
1261 eol = 1;
1262 *parse = '\0';
1263 }
1264
1265 for (; q && *q && !isspacech(*q); q++) {
1266 switch (tolowerch(*q)) {
1267 case 'b':
1268 working->flags |= CE_BINARY;
1269 break;
1270 case 'c':
1271 /*
1272 * XXX - Ick! Ugly! Remove ASAP!
1273 * We want `c' and `C' for "create". But we
1274 * will temporarily treat `c' as `g', because
1275 * FreeBSD releases <= 4.8 have a typo of
1276 * checking ('G' || 'c') for CE_GLOB.
1277 */
1278 if (*q == 'c') {
1279 warnx("Assuming 'g' for 'c' in flags for line:\n%s",
1280 errline);
1281 warnx("The 'c' flag will eventually mean 'CREATE'");
1282 working->flags |= CE_GLOB;
1283 break;
1284 }
1285 working->flags |= CE_CREATE;
1286 break;
1287 case 'd':
1288 working->flags |= CE_NODUMP;
1289 break;
1290 case 'g':
1291 working->flags |= CE_GLOB;
1292 break;
1293 case 'j':
1294 working->compress = COMPRESS_BZIP2;
1295 break;
1296 case 'n':
1297 working->flags |= CE_NOSIGNAL;
1298 break;
1299 case 'r':
1300 working->flags |= CE_PID2CMD;
1301 break;
1302 case 'u':
1303 working->flags |= CE_SIGNALGROUP;
1304 break;
1305 case 'w':
1306 /* Depreciated flag - keep for compatibility purposes */
1307 break;
1308 case 'x':
1309 working->compress = COMPRESS_XZ;
1310 break;
1311 case 'z':
1312 working->compress = COMPRESS_GZIP;
1313 break;
1314 case '-':
1315 break;
1316 case 'f': /* Used by OpenBSD for "CE_FOLLOW" */
1317 case 'm': /* Used by OpenBSD for "CE_MONITOR" */
1318 case 'p': /* Used by NetBSD for "CE_PLAIN0" */
1319 default:
1320 errx(1, "illegal flag in config file -- %c",
1321 *q);
1322 }
1323 }
1324
1325 if (eol)
1326 q = NULL;
1327 else {
1328 q = parse = sob(++parse); /* Optional field */
1329 parse = son(parse);
1330 if (!*parse)
1331 eol = 1;
1332 *parse = '\0';
1333 }
1334
1335 working->pid_cmd_file = NULL;
1336 if (q && *q) {
1337 if (*q == '/')
1338 working->pid_cmd_file = strdup(q);
1339 else if (isdigit(*q))
1340 goto got_sig;
1341 else
1342 errx(1,
1343 "illegal pid file or signal number in config file:\n%s",
1344 errline);
1345 }
1346 if (eol)
1347 q = NULL;
1348 else {
1349 q = parse = sob(++parse); /* Optional field */
1350 *(parse = son(parse)) = '\0';
1351 }
1352
1353 working->sig = SIGHUP;
1354 if (q && *q) {
1355 if (isdigit(*q)) {
1356 got_sig:
1357 working->sig = atoi(q);
1358 } else {
1359 err_sig:
1360 errx(1,
1361 "illegal signal number in config file:\n%s",
1362 errline);
1363 }
1364 if (working->sig < 1 || working->sig >= NSIG)
1365 goto err_sig;
1366 }
1367
1368 /*
1369 * Finish figuring out what pid-file to use (if any) in
1370 * later processing if this logfile needs to be rotated.
1371 */
1372 if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) {
1373 /*
1374 * This config-entry specified 'n' for nosignal,
1375 * see if it also specified an explicit pid_cmd_file.
1376 * This would be a pretty pointless combination.
1377 */
1378 if (working->pid_cmd_file != NULL) {
1379 warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s",
1380 working->pid_cmd_file, errline);
1381 free(working->pid_cmd_file);
1382 working->pid_cmd_file = NULL;
1383 }
1384 } else if (working->pid_cmd_file == NULL) {
1385 /*
1386 * This entry did not specify the 'n' flag, which
1387 * means it should signal syslogd unless it had
1388 * specified some other pid-file (and obviously the
1389 * syslog pid-file will not be for a process-group).
1390 * Also, we should only try to notify syslog if we
1391 * are root.
1392 */
1393 if (working->flags & CE_SIGNALGROUP) {
1394 warnx("Ignoring flag 'U' in line:\n%s",
1395 errline);
1396 working->flags &= ~CE_SIGNALGROUP;
1397 }
1398 if (needroot)
1399 working->pid_cmd_file = strdup(path_syslogpid);
1400 }
1401
1402 /*
1403 * Add this entry to the appropriate list of entries, unless
1404 * it was some kind of special entry (eg: <default>).
1405 */
1406 if (special) {
1407 ; /* Do not add to any list */
1408 } else if (working->flags & CE_GLOB) {
1409 STAILQ_INSERT_TAIL(glob_p, working, cf_nextp);
1410 } else {
1411 STAILQ_INSERT_TAIL(work_p, working, cf_nextp);
1412 }
1413 }
1414 if (errline != NULL)
1415 free(errline);
1416}
1417
1418static char *
1419missing_field(char *p, char *errline)
1420{
1421
1422 if (!p || !*p)
1423 errx(1, "missing field in config file:\n%s", errline);
1424 return (p);
1425}
1426
1427/*
1428 * In our sort we return it in the reverse of what qsort normally
1429 * would do, as we want the newest files first. If we have two
1430 * entries with the same time we don't really care about order.
1431 *
1432 * Support function for qsort() in delete_oldest_timelog().
1433 */
1434static int
1435oldlog_entry_compare(const void *a, const void *b)
1436{
1437 const struct oldlog_entry *ola = a, *olb = b;
1438
1439 if (ola->t > olb->t)
1440 return (-1);
1441 else if (ola->t < olb->t)
1442 return (1);
1443 else
1444 return (0);
1445}
1446
1447/*
1448 * Delete the oldest logfiles, when using time based filenames.
1449 */
1450static void
1451delete_oldest_timelog(const struct conf_entry *ent, const char *archive_dir)
1452{
1453 char *logfname, *s, *dir, errbuf[80];
|
1454 int dirfd, i, logcnt, max_logcnt, valid;
| 1454 int dir_fd, i, logcnt, max_logcnt, valid;
|
1455 struct oldlog_entry *oldlogs;
1456 size_t logfname_len;
1457 struct dirent *dp;
1458 const char *cdir;
1459 struct tm tm;
1460 DIR *dirp;
1461 int c;
1462
1463 oldlogs = malloc(MAX_OLDLOGS * sizeof(struct oldlog_entry));
1464 max_logcnt = MAX_OLDLOGS;
1465 logcnt = 0;
1466
1467 if (archive_dir != NULL && archive_dir[0] != '\0')
1468 cdir = archive_dir;
1469 else
1470 if ((cdir = dirname(ent->log)) == NULL)
1471 err(1, "dirname()");
1472 if ((dir = strdup(cdir)) == NULL)
1473 err(1, "strdup()");
1474
1475 if ((s = basename(ent->log)) == NULL)
1476 err(1, "basename()");
1477 if ((logfname = strdup(s)) == NULL)
1478 err(1, "strdup()");
1479 logfname_len = strlen(logfname);
1480 if (strcmp(logfname, "/") == 0)
1481 errx(1, "Invalid log filename - became '/'");
1482
1483 if (verbose > 2)
1484 printf("Searching for old logs in %s\n", dir);
1485
1486 /* First we create a 'list' of all archived logfiles */
1487 if ((dirp = opendir(dir)) == NULL)
1488 err(1, "Cannot open log directory '%s'", dir);
| 1455 struct oldlog_entry *oldlogs;
1456 size_t logfname_len;
1457 struct dirent *dp;
1458 const char *cdir;
1459 struct tm tm;
1460 DIR *dirp;
1461 int c;
1462
1463 oldlogs = malloc(MAX_OLDLOGS * sizeof(struct oldlog_entry));
1464 max_logcnt = MAX_OLDLOGS;
1465 logcnt = 0;
1466
1467 if (archive_dir != NULL && archive_dir[0] != '\0')
1468 cdir = archive_dir;
1469 else
1470 if ((cdir = dirname(ent->log)) == NULL)
1471 err(1, "dirname()");
1472 if ((dir = strdup(cdir)) == NULL)
1473 err(1, "strdup()");
1474
1475 if ((s = basename(ent->log)) == NULL)
1476 err(1, "basename()");
1477 if ((logfname = strdup(s)) == NULL)
1478 err(1, "strdup()");
1479 logfname_len = strlen(logfname);
1480 if (strcmp(logfname, "/") == 0)
1481 errx(1, "Invalid log filename - became '/'");
1482
1483 if (verbose > 2)
1484 printf("Searching for old logs in %s\n", dir);
1485
1486 /* First we create a 'list' of all archived logfiles */
1487 if ((dirp = opendir(dir)) == NULL)
1488 err(1, "Cannot open log directory '%s'", dir);
|
1489 dirfd = dirfd(dirp);
| 1489 dir_fd = dirfd(dirp);
|
1490 while ((dp = readdir(dirp)) != NULL) {
1491 if (dp->d_type != DT_REG)
1492 continue;
1493
1494 /* Ignore everything but files with our logfile prefix */
1495 if (strncmp(dp->d_name, logfname, logfname_len) != 0)
1496 continue;
1497 /* Ignore the actual non-rotated logfile */
1498 if (dp->d_namlen == logfname_len)
1499 continue;
1500 /*
1501 * Make sure we created have found a logfile, so the
1502 * postfix is valid, IE format is: '.<time>(.[bg]z)?'.
1503 */
1504 if (dp->d_name[logfname_len] != '.') {
1505 if (verbose)
1506 printf("Ignoring %s which has unexpected "
1507 "extension '%s'\n", dp->d_name,
1508 &dp->d_name[logfname_len]);
1509 continue;
1510 }
1511 if ((s = strptime(&dp->d_name[logfname_len + 1],
1512 timefnamefmt, &tm)) == NULL) {
1513 /*
1514 * We could special case "old" sequentially
1515 * named logfiles here, but we do not as that
1516 * would require special handling to decide
1517 * which one was the oldest compared to "new"
1518 * time based logfiles.
1519 */
1520 if (verbose)
1521 printf("Ignoring %s which does not "
1522 "match time format\n", dp->d_name);
1523 continue;
1524 }
1525
1526 for (c = 0; c < COMPRESS_TYPES; c++)
1527 if (strcmp(s, compress_type[c].suffix) == 0)
1528 valid = 1;
1529 if (valid != 1) {
1530 if (verbose)
1531 printf("Ignoring %s which has unexpected "
1532 "extension '%s'\n", dp->d_name, s);
1533 continue;
1534 }
1535
1536 /*
1537 * We should now have old an old rotated logfile, so
1538 * add it to the 'list'.
1539 */
1540 if ((oldlogs[logcnt].t = timegm(&tm)) == -1)
1541 err(1, "Could not convert time string to time value");
1542 if ((oldlogs[logcnt].fname = strdup(dp->d_name)) == NULL)
1543 err(1, "strdup()");
1544 logcnt++;
1545
1546 /*
1547 * It is very unlikely we ever run out of space in the
1548 * logfile array from the default size, but lets
1549 * handle it anyway...
1550 */
1551 if (logcnt >= max_logcnt) {
1552 max_logcnt *= 4;
1553 /* Detect integer overflow */
1554 if (max_logcnt < logcnt)
1555 errx(1, "Too many old logfiles found");
1556 oldlogs = realloc(oldlogs,
1557 max_logcnt * sizeof(struct oldlog_entry));
1558 if (oldlogs == NULL)
1559 err(1, "realloc()");
1560 }
1561 }
1562
1563 /* Second, if needed we delete oldest archived logfiles */
1564 if (logcnt > 0 && logcnt >= ent->numlogs && ent->numlogs > 1) {
1565 oldlogs = realloc(oldlogs, logcnt *
1566 sizeof(struct oldlog_entry));
1567 if (oldlogs == NULL)
1568 err(1, "realloc()");
1569
1570 /*
1571 * We now sort the logs in the order of newest to
1572 * oldest. That way we can simply skip over the
1573 * number of records we want to keep.
1574 */
1575 qsort(oldlogs, logcnt, sizeof(struct oldlog_entry),
1576 oldlog_entry_compare);
1577 for (i = ent->numlogs - 1; i < logcnt; i++) {
1578 if (noaction)
1579 printf("\trm -f %s/%s\n", dir,
1580 oldlogs[i].fname);
| 1490 while ((dp = readdir(dirp)) != NULL) {
1491 if (dp->d_type != DT_REG)
1492 continue;
1493
1494 /* Ignore everything but files with our logfile prefix */
1495 if (strncmp(dp->d_name, logfname, logfname_len) != 0)
1496 continue;
1497 /* Ignore the actual non-rotated logfile */
1498 if (dp->d_namlen == logfname_len)
1499 continue;
1500 /*
1501 * Make sure we created have found a logfile, so the
1502 * postfix is valid, IE format is: '.<time>(.[bg]z)?'.
1503 */
1504 if (dp->d_name[logfname_len] != '.') {
1505 if (verbose)
1506 printf("Ignoring %s which has unexpected "
1507 "extension '%s'\n", dp->d_name,
1508 &dp->d_name[logfname_len]);
1509 continue;
1510 }
1511 if ((s = strptime(&dp->d_name[logfname_len + 1],
1512 timefnamefmt, &tm)) == NULL) {
1513 /*
1514 * We could special case "old" sequentially
1515 * named logfiles here, but we do not as that
1516 * would require special handling to decide
1517 * which one was the oldest compared to "new"
1518 * time based logfiles.
1519 */
1520 if (verbose)
1521 printf("Ignoring %s which does not "
1522 "match time format\n", dp->d_name);
1523 continue;
1524 }
1525
1526 for (c = 0; c < COMPRESS_TYPES; c++)
1527 if (strcmp(s, compress_type[c].suffix) == 0)
1528 valid = 1;
1529 if (valid != 1) {
1530 if (verbose)
1531 printf("Ignoring %s which has unexpected "
1532 "extension '%s'\n", dp->d_name, s);
1533 continue;
1534 }
1535
1536 /*
1537 * We should now have old an old rotated logfile, so
1538 * add it to the 'list'.
1539 */
1540 if ((oldlogs[logcnt].t = timegm(&tm)) == -1)
1541 err(1, "Could not convert time string to time value");
1542 if ((oldlogs[logcnt].fname = strdup(dp->d_name)) == NULL)
1543 err(1, "strdup()");
1544 logcnt++;
1545
1546 /*
1547 * It is very unlikely we ever run out of space in the
1548 * logfile array from the default size, but lets
1549 * handle it anyway...
1550 */
1551 if (logcnt >= max_logcnt) {
1552 max_logcnt *= 4;
1553 /* Detect integer overflow */
1554 if (max_logcnt < logcnt)
1555 errx(1, "Too many old logfiles found");
1556 oldlogs = realloc(oldlogs,
1557 max_logcnt * sizeof(struct oldlog_entry));
1558 if (oldlogs == NULL)
1559 err(1, "realloc()");
1560 }
1561 }
1562
1563 /* Second, if needed we delete oldest archived logfiles */
1564 if (logcnt > 0 && logcnt >= ent->numlogs && ent->numlogs > 1) {
1565 oldlogs = realloc(oldlogs, logcnt *
1566 sizeof(struct oldlog_entry));
1567 if (oldlogs == NULL)
1568 err(1, "realloc()");
1569
1570 /*
1571 * We now sort the logs in the order of newest to
1572 * oldest. That way we can simply skip over the
1573 * number of records we want to keep.
1574 */
1575 qsort(oldlogs, logcnt, sizeof(struct oldlog_entry),
1576 oldlog_entry_compare);
1577 for (i = ent->numlogs - 1; i < logcnt; i++) {
1578 if (noaction)
1579 printf("\trm -f %s/%s\n", dir,
1580 oldlogs[i].fname);
|
1581 else if (unlinkat(dirfd, oldlogs[i].fname, 0) != 0) {
| 1581 else if (unlinkat(dir_fd, oldlogs[i].fname, 0) != 0) {
|
1582 snprintf(errbuf, sizeof(errbuf),
1583 "Could not delet old logfile '%s'",
1584 oldlogs[i].fname);
1585 perror(errbuf);
1586 }
1587 }
1588 } else if (verbose > 1)
1589 printf("No old logs to delete for logfile %s\n", ent->log);
1590
1591 /* Third, cleanup */
1592 closedir(dirp);
1593 for (i = 0; i < logcnt; i++) {
1594 assert(oldlogs[i].fname != NULL);
1595 free(oldlogs[i].fname);
1596 }
1597 free(oldlogs);
1598 free(logfname);
1599 free(dir);
1600}
1601
1602/*
1603 * Generate a log filename, when using classic filenames.
1604 */
1605static void
1606gen_classiclog_fname(char *fname, size_t fname_sz, const char *archive_dir,
1607 const char *namepart, int numlogs_c)
1608{
1609
1610 if (archive_dir[0] != '\0')
1611 (void) snprintf(fname, fname_sz, "%s/%s.%d", archive_dir,
1612 namepart, numlogs_c);
1613 else
1614 (void) snprintf(fname, fname_sz, "%s.%d", namepart, numlogs_c);
1615}
1616
1617/*
1618 * Delete a rotated logfile, when using classic filenames.
1619 */
1620static void
1621delete_classiclog(const char *archive_dir, const char *namepart, int numlog_c)
1622{
1623 char file1[MAXPATHLEN], zfile1[MAXPATHLEN];
1624 int c;
1625
1626 gen_classiclog_fname(file1, sizeof(file1), archive_dir, namepart,
1627 numlog_c);
1628
1629 for (c = 0; c < COMPRESS_TYPES; c++) {
1630 (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
1631 compress_type[c].suffix);
1632 if (noaction)
1633 printf("\trm -f %s\n", zfile1);
1634 else
1635 (void) unlink(zfile1);
1636 }
1637}
1638
1639/*
1640 * Only add to the queue if the file hasn't already been added. This is
1641 * done to prevent circular include loops.
1642 */
1643static void
1644add_to_queue(const char *fname, struct ilist *inclist)
1645{
1646 struct include_entry *inc;
1647
1648 STAILQ_FOREACH(inc, inclist, inc_nextp) {
1649 if (strcmp(fname, inc->file) == 0) {
1650 warnx("duplicate include detected: %s", fname);
1651 return;
1652 }
1653 }
1654
1655 inc = malloc(sizeof(struct include_entry));
1656 if (inc == NULL)
1657 err(1, "malloc of inc");
1658 inc->file = strdup(fname);
1659
1660 if (verbose > 2)
1661 printf("\t+ Adding %s to the processing queue.\n", fname);
1662
1663 STAILQ_INSERT_TAIL(inclist, inc, inc_nextp);
1664}
1665
1666/*
1667 * Search for logfile and return its compression suffix (if supported)
1668 * The suffix detection is first-match in the order of compress_types
1669 *
1670 * Note: if logfile without suffix exists (uncompressed, COMPRESS_NONE)
1671 * a zero-length string is returned
1672 */
1673static const char *
1674get_logfile_suffix(const char *logfile)
1675{
1676 struct stat st;
1677 char zfile[MAXPATHLEN];
1678 int c;
1679
1680 for (c = 0; c < COMPRESS_TYPES; c++) {
1681 (void) strlcpy(zfile, logfile, MAXPATHLEN);
1682 (void) strlcat(zfile, compress_type[c].suffix, MAXPATHLEN);
1683 if (lstat(zfile, &st) == 0)
1684 return (compress_type[c].suffix);
1685 }
1686 return (NULL);
1687}
1688
1689static fk_entry
1690do_rotate(const struct conf_entry *ent)
1691{
1692 char dirpart[MAXPATHLEN], namepart[MAXPATHLEN];
1693 char file1[MAXPATHLEN], file2[MAXPATHLEN];
1694 char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN];
1695 const char *logfile_suffix;
1696 char datetimestr[30];
1697 int flags, numlogs_c;
1698 fk_entry free_or_keep;
1699 struct sigwork_entry *swork;
1700 struct stat st;
1701 struct tm tm;
1702 time_t now;
1703
1704 flags = ent->flags;
1705 free_or_keep = FREE_ENT;
1706
1707 if (archtodir) {
1708 char *p;
1709
1710 /* build complete name of archive directory into dirpart */
1711 if (*archdirname == '/') { /* absolute */
1712 strlcpy(dirpart, archdirname, sizeof(dirpart));
1713 } else { /* relative */
1714 /* get directory part of logfile */
1715 strlcpy(dirpart, ent->log, sizeof(dirpart));
1716 if ((p = strrchr(dirpart, '/')) == NULL)
1717 dirpart[0] = '\0';
1718 else
1719 *(p + 1) = '\0';
1720 strlcat(dirpart, archdirname, sizeof(dirpart));
1721 }
1722
1723 /* check if archive directory exists, if not, create it */
1724 if (lstat(dirpart, &st))
1725 createdir(ent, dirpart);
1726
1727 /* get filename part of logfile */
1728 if ((p = strrchr(ent->log, '/')) == NULL)
1729 strlcpy(namepart, ent->log, sizeof(namepart));
1730 else
1731 strlcpy(namepart, p + 1, sizeof(namepart));
1732 } else {
1733 /*
1734 * Tell utility functions we are not using an archive
1735 * dir.
1736 */
1737 dirpart[0] = '\0';
1738 strlcpy(namepart, ent->log, sizeof(namepart));
1739 }
1740
1741 /* Delete old logs */
1742 if (timefnamefmt != NULL)
1743 delete_oldest_timelog(ent, dirpart);
1744 else {
1745 /*
1746 * Handle cleaning up after legacy newsyslog where we
1747 * kept ent->numlogs + 1 files. This code can go away
1748 * at some point in the future.
1749 */
1750 delete_classiclog(dirpart, namepart, ent->numlogs);
1751
1752 if (ent->numlogs > 0)
1753 delete_classiclog(dirpart, namepart, ent->numlogs - 1);
1754
1755 }
1756
1757 if (timefnamefmt != NULL) {
1758 /* If time functions fails we can't really do any sensible */
1759 if (time(&now) == (time_t)-1 ||
1760 localtime_r(&now, &tm) == NULL)
1761 bzero(&tm, sizeof(tm));
1762
1763 strftime(datetimestr, sizeof(datetimestr), timefnamefmt, &tm);
1764 if (archtodir)
1765 (void) snprintf(file1, sizeof(file1), "%s/%s.%s",
1766 dirpart, namepart, datetimestr);
1767 else
1768 (void) snprintf(file1, sizeof(file1), "%s.%s",
1769 ent->log, datetimestr);
1770
1771 /* Don't run the code to move down logs */
1772 numlogs_c = -1;
1773 } else {
1774 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1775 ent->numlogs - 1);
1776 numlogs_c = ent->numlogs - 2; /* copy for countdown */
1777 }
1778
1779 /* Move down log files */
1780 for (; numlogs_c >= 0; numlogs_c--) {
1781 (void) strlcpy(file2, file1, sizeof(file2));
1782
1783 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1784 numlogs_c);
1785
1786 logfile_suffix = get_logfile_suffix(file1);
1787 if (logfile_suffix == NULL)
1788 continue;
1789 (void) strlcpy(zfile1, file1, MAXPATHLEN);
1790 (void) strlcpy(zfile2, file2, MAXPATHLEN);
1791 (void) strlcat(zfile1, logfile_suffix, MAXPATHLEN);
1792 (void) strlcat(zfile2, logfile_suffix, MAXPATHLEN);
1793
1794 if (noaction)
1795 printf("\tmv %s %s\n", zfile1, zfile2);
1796 else {
1797 /* XXX - Ought to be checking for failure! */
1798 (void)rename(zfile1, zfile2);
1799 }
1800 change_attrs(zfile2, ent);
1801 }
1802
1803 if (ent->numlogs > 0) {
1804 if (noaction) {
1805 /*
1806 * Note that savelog() may succeed with using link()
1807 * for the archtodir case, but there is no good way
1808 * of knowing if it will when doing "noaction", so
1809 * here we claim that it will have to do a copy...
1810 */
1811 if (archtodir)
1812 printf("\tcp %s %s\n", ent->log, file1);
1813 else
1814 printf("\tln %s %s\n", ent->log, file1);
1815 } else {
1816 if (!(flags & CE_BINARY)) {
1817 /* Report the trimming to the old log */
1818 log_trim(ent->log, ent);
1819 }
1820 savelog(ent->log, file1);
1821 }
1822 change_attrs(file1, ent);
1823 }
1824
1825 /* Create the new log file and move it into place */
1826 if (noaction)
1827 printf("Start new log...\n");
1828 createlog(ent);
1829
1830 /*
1831 * Save all signalling and file-compression to be done after log
1832 * files from all entries have been rotated. This way any one
1833 * process will not be sent the same signal multiple times when
1834 * multiple log files had to be rotated.
1835 */
1836 swork = NULL;
1837 if (ent->pid_cmd_file != NULL)
1838 swork = save_sigwork(ent);
1839 if (ent->numlogs > 0 && ent->compress > COMPRESS_NONE) {
1840 /*
1841 * The zipwork_entry will include a pointer to this
1842 * conf_entry, so the conf_entry should not be freed.
1843 */
1844 free_or_keep = KEEP_ENT;
1845 save_zipwork(ent, swork, ent->fsize, file1);
1846 }
1847
1848 return (free_or_keep);
1849}
1850
1851static void
1852do_sigwork(struct sigwork_entry *swork)
1853{
1854 struct sigwork_entry *nextsig;
1855 int kres, secs;
1856 char *tmp;
1857
1858 if (!(swork->sw_pidok) || swork->sw_pid == 0)
1859 return; /* no work to do... */
1860
1861 /*
1862 * If nosignal (-s) was specified, then do not signal any process.
1863 * Note that a nosignal request triggers a warning message if the
1864 * rotated logfile needs to be compressed, *unless* -R was also
1865 * specified. We assume that an `-sR' request came from a process
1866 * which writes to the logfile, and as such, we assume that process
1867 * has already made sure the logfile is not presently in use. This
1868 * just sets swork->sw_pidok to a special value, and do_zipwork
1869 * will print any necessary warning(s).
1870 */
1871 if (nosignal) {
1872 if (!rotatereq)
1873 swork->sw_pidok = -1;
1874 return;
1875 }
1876
1877 /*
1878 * Compute the pause between consecutive signals. Use a longer
1879 * sleep time if we will be sending two signals to the same
1880 * deamon or process-group.
1881 */
1882 secs = 0;
1883 nextsig = SLIST_NEXT(swork, sw_nextp);
1884 if (nextsig != NULL) {
1885 if (swork->sw_pid == nextsig->sw_pid)
1886 secs = 10;
1887 else
1888 secs = 1;
1889 }
1890
1891 if (noaction) {
1892 printf("\tkill -%d %d \t\t# %s\n", swork->sw_signum,
1893 (int)swork->sw_pid, swork->sw_fname);
1894 if (secs > 0)
1895 printf("\tsleep %d\n", secs);
1896 return;
1897 }
1898
1899 if (swork->run_cmd) {
1900 asprintf(&tmp, "%s %d", swork->sw_fname, swork->sw_signum);
1901 if (tmp == NULL) {
1902 warn("can't allocate memory to run %s",
1903 swork->sw_fname);
1904 return;
1905 }
1906 if (verbose)
1907 printf("Run command: %s\n", tmp);
1908 kres = system(tmp);
1909 if (kres) {
1910 warnx("%s: returned non-zero exit code: %d",
1911 tmp, kres);
1912 }
1913 free(tmp);
1914 return;
1915 }
1916
1917 kres = kill(swork->sw_pid, swork->sw_signum);
1918 if (kres != 0) {
1919 /*
1920 * Assume that "no such process" (ESRCH) is something
1921 * to warn about, but is not an error. Presumably the
1922 * process which writes to the rotated log file(s) is
1923 * gone, in which case we should have no problem with
1924 * compressing the rotated log file(s).
1925 */
1926 if (errno != ESRCH)
1927 swork->sw_pidok = 0;
1928 warn("can't notify %s, pid %d", swork->sw_pidtype,
1929 (int)swork->sw_pid);
1930 } else {
1931 if (verbose)
1932 printf("Notified %s pid %d = %s\n", swork->sw_pidtype,
1933 (int)swork->sw_pid, swork->sw_fname);
1934 if (secs > 0) {
1935 if (verbose)
1936 printf("Pause %d second(s) between signals\n",
1937 secs);
1938 sleep(secs);
1939 }
1940 }
1941}
1942
1943static void
1944do_zipwork(struct zipwork_entry *zwork)
1945{
1946 const char *pgm_name, *pgm_path;
1947 int errsav, fcount, zstatus;
1948 pid_t pidzip, wpid;
1949 char zresult[MAXPATHLEN];
1950 int c;
1951
1952 assert(zwork != NULL);
1953 pgm_path = NULL;
1954 strlcpy(zresult, zwork->zw_fname, sizeof(zresult));
1955 if (zwork->zw_conf != NULL &&
1956 zwork->zw_conf->compress > COMPRESS_NONE)
1957 for (c = 1; c < COMPRESS_TYPES; c++) {
1958 if (zwork->zw_conf->compress == c) {
1959 pgm_path = compress_type[c].path;
1960 (void) strlcat(zresult,
1961 compress_type[c].suffix, sizeof(zresult));
1962 break;
1963 }
1964 }
1965 if (pgm_path == NULL) {
1966 warnx("invalid entry for %s in do_zipwork", zwork->zw_fname);
1967 return;
1968 }
1969 pgm_name = strrchr(pgm_path, '/');
1970 if (pgm_name == NULL)
1971 pgm_name = pgm_path;
1972 else
1973 pgm_name++;
1974
1975 if (zwork->zw_swork != NULL && zwork->zw_swork->sw_pidok <= 0) {
1976 warnx(
1977 "log %s not compressed because daemon(s) not notified",
1978 zwork->zw_fname);
1979 change_attrs(zwork->zw_fname, zwork->zw_conf);
1980 return;
1981 }
1982
1983 if (noaction) {
1984 printf("\t%s %s\n", pgm_name, zwork->zw_fname);
1985 change_attrs(zresult, zwork->zw_conf);
1986 return;
1987 }
1988
1989 fcount = 1;
1990 pidzip = fork();
1991 while (pidzip < 0) {
1992 /*
1993 * The fork failed. If the failure was due to a temporary
1994 * problem, then wait a short time and try it again.
1995 */
1996 errsav = errno;
1997 warn("fork() for `%s %s'", pgm_name, zwork->zw_fname);
1998 if (errsav != EAGAIN || fcount > 5)
1999 errx(1, "Exiting...");
2000 sleep(fcount * 12);
2001 fcount++;
2002 pidzip = fork();
2003 }
2004 if (!pidzip) {
2005 /* The child process executes the compression command */
2006 execl(pgm_path, pgm_path, "-f", zwork->zw_fname, (char *)0);
2007 err(1, "execl(`%s -f %s')", pgm_path, zwork->zw_fname);
2008 }
2009
2010 wpid = waitpid(pidzip, &zstatus, 0);
2011 if (wpid == -1) {
2012 /* XXX - should this be a fatal error? */
2013 warn("%s: waitpid(%d)", pgm_path, pidzip);
2014 return;
2015 }
2016 if (!WIFEXITED(zstatus)) {
2017 warnx("`%s -f %s' did not terminate normally", pgm_name,
2018 zwork->zw_fname);
2019 return;
2020 }
2021 if (WEXITSTATUS(zstatus)) {
2022 warnx("`%s -f %s' terminated with a non-zero status (%d)",
2023 pgm_name, zwork->zw_fname, WEXITSTATUS(zstatus));
2024 return;
2025 }
2026
2027 /* Compression was successful, set file attributes on the result. */
2028 change_attrs(zresult, zwork->zw_conf);
2029}
2030
2031/*
2032 * Save information on any process we need to signal. Any single
2033 * process may need to be sent different signal-values for different
2034 * log files, but usually a single signal-value will cause the process
2035 * to close and re-open all of it's log files.
2036 */
2037static struct sigwork_entry *
2038save_sigwork(const struct conf_entry *ent)
2039{
2040 struct sigwork_entry *sprev, *stmp;
2041 int ndiff;
2042 size_t tmpsiz;
2043
2044 sprev = NULL;
2045 ndiff = 1;
2046 SLIST_FOREACH(stmp, &swhead, sw_nextp) {
2047 ndiff = strcmp(ent->pid_cmd_file, stmp->sw_fname);
2048 if (ndiff > 0)
2049 break;
2050 if (ndiff == 0) {
2051 if (ent->sig == stmp->sw_signum)
2052 break;
2053 if (ent->sig > stmp->sw_signum) {
2054 ndiff = 1;
2055 break;
2056 }
2057 }
2058 sprev = stmp;
2059 }
2060 if (stmp != NULL && ndiff == 0)
2061 return (stmp);
2062
2063 tmpsiz = sizeof(struct sigwork_entry) + strlen(ent->pid_cmd_file) + 1;
2064 stmp = malloc(tmpsiz);
2065
2066 stmp->run_cmd = 0;
2067 /* If this is a command to run we just set the flag and run command */
2068 if (ent->flags & CE_PID2CMD) {
2069 stmp->run_cmd = 1;
2070 } else {
2071 set_swpid(stmp, ent);
2072 }
2073 stmp->sw_signum = ent->sig;
2074 strcpy(stmp->sw_fname, ent->pid_cmd_file);
2075 if (sprev == NULL)
2076 SLIST_INSERT_HEAD(&swhead, stmp, sw_nextp);
2077 else
2078 SLIST_INSERT_AFTER(sprev, stmp, sw_nextp);
2079 return (stmp);
2080}
2081
2082/*
2083 * Save information on any file we need to compress. We may see the same
2084 * file multiple times, so check the full list to avoid duplicates. The
2085 * list itself is sorted smallest-to-largest, because that's the order we
2086 * want to compress the files. If the partition is very low on disk space,
2087 * then the smallest files are the most likely to compress, and compressing
2088 * them first will free up more space for the larger files.
2089 */
2090static struct zipwork_entry *
2091save_zipwork(const struct conf_entry *ent, const struct sigwork_entry *swork,
2092 int zsize, const char *zipfname)
2093{
2094 struct zipwork_entry *zprev, *ztmp;
2095 int ndiff;
2096 size_t tmpsiz;
2097
2098 /* Compute the size if the caller did not know it. */
2099 if (zsize < 0)
2100 zsize = sizefile(zipfname);
2101
2102 zprev = NULL;
2103 ndiff = 1;
2104 SLIST_FOREACH(ztmp, &zwhead, zw_nextp) {
2105 ndiff = strcmp(zipfname, ztmp->zw_fname);
2106 if (ndiff == 0)
2107 break;
2108 if (zsize > ztmp->zw_fsize)
2109 zprev = ztmp;
2110 }
2111 if (ztmp != NULL && ndiff == 0)
2112 return (ztmp);
2113
2114 tmpsiz = sizeof(struct zipwork_entry) + strlen(zipfname) + 1;
2115 ztmp = malloc(tmpsiz);
2116 ztmp->zw_conf = ent;
2117 ztmp->zw_swork = swork;
2118 ztmp->zw_fsize = zsize;
2119 strcpy(ztmp->zw_fname, zipfname);
2120 if (zprev == NULL)
2121 SLIST_INSERT_HEAD(&zwhead, ztmp, zw_nextp);
2122 else
2123 SLIST_INSERT_AFTER(zprev, ztmp, zw_nextp);
2124 return (ztmp);
2125}
2126
2127/* Send a signal to the pid specified by pidfile */
2128static void
2129set_swpid(struct sigwork_entry *swork, const struct conf_entry *ent)
2130{
2131 FILE *f;
2132 long minok, maxok, rval;
2133 char *endp, *linep, line[BUFSIZ];
2134
2135 minok = MIN_PID;
2136 maxok = MAX_PID;
2137 swork->sw_pidok = 0;
2138 swork->sw_pid = 0;
2139 swork->sw_pidtype = "daemon";
2140 if (ent->flags & CE_SIGNALGROUP) {
2141 /*
2142 * If we are expected to signal a process-group when
2143 * rotating this logfile, then the value read in should
2144 * be the negative of a valid process ID.
2145 */
2146 minok = -MAX_PID;
2147 maxok = -MIN_PID;
2148 swork->sw_pidtype = "process-group";
2149 }
2150
2151 f = fopen(ent->pid_cmd_file, "r");
2152 if (f == NULL) {
2153 if (errno == ENOENT && enforcepid == 0) {
2154 /*
2155 * Warn if the PID file doesn't exist, but do
2156 * not consider it an error. Most likely it
2157 * means the process has been terminated,
2158 * so it should be safe to rotate any log
2159 * files that the process would have been using.
2160 */
2161 swork->sw_pidok = 1;
2162 warnx("pid file doesn't exist: %s", ent->pid_cmd_file);
2163 } else
2164 warn("can't open pid file: %s", ent->pid_cmd_file);
2165 return;
2166 }
2167
2168 if (fgets(line, BUFSIZ, f) == NULL) {
2169 /*
2170 * Warn if the PID file is empty, but do not consider
2171 * it an error. Most likely it means the process has
2172 * has terminated, so it should be safe to rotate any
2173 * log files that the process would have been using.
2174 */
2175 if (feof(f) && enforcepid == 0) {
2176 swork->sw_pidok = 1;
2177 warnx("pid/cmd file is empty: %s", ent->pid_cmd_file);
2178 } else
2179 warn("can't read from pid file: %s", ent->pid_cmd_file);
2180 (void)fclose(f);
2181 return;
2182 }
2183 (void)fclose(f);
2184
2185 errno = 0;
2186 linep = line;
2187 while (*linep == ' ')
2188 linep++;
2189 rval = strtol(linep, &endp, 10);
2190 if (*endp != '\0' && !isspacech(*endp)) {
2191 warnx("pid file does not start with a valid number: %s",
2192 ent->pid_cmd_file);
2193 } else if (rval < minok || rval > maxok) {
2194 warnx("bad value '%ld' for process number in %s",
2195 rval, ent->pid_cmd_file);
2196 if (verbose)
2197 warnx("\t(expecting value between %ld and %ld)",
2198 minok, maxok);
2199 } else {
2200 swork->sw_pidok = 1;
2201 swork->sw_pid = rval;
2202 }
2203
2204 return;
2205}
2206
2207/* Log the fact that the logs were turned over */
2208static int
2209log_trim(const char *logname, const struct conf_entry *log_ent)
2210{
2211 FILE *f;
2212 const char *xtra;
2213
2214 if ((f = fopen(logname, "a")) == NULL)
2215 return (-1);
2216 xtra = "";
2217 if (log_ent->def_cfg)
2218 xtra = " using <default> rule";
2219 if (log_ent->firstcreate)
2220 fprintf(f, "%s %s newsyslog[%d]: logfile first created%s\n",
2221 daytime, hostname, (int) getpid(), xtra);
2222 else if (log_ent->r_reason != NULL)
2223 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s%s\n",
2224 daytime, hostname, (int) getpid(), log_ent->r_reason, xtra);
2225 else
2226 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s\n",
2227 daytime, hostname, (int) getpid(), xtra);
2228 if (fclose(f) == EOF)
2229 err(1, "log_trim: fclose");
2230 return (0);
2231}
2232
2233/* Return size in kilobytes of a file */
2234static int
2235sizefile(const char *file)
2236{
2237 struct stat sb;
2238
2239 if (stat(file, &sb) < 0)
2240 return (-1);
2241 return (kbytes(dbtob(sb.st_blocks)));
2242}
2243
2244/* Return the age of old log file (file.0) */
2245static int
2246age_old_log(char *file)
2247{
2248 struct stat sb;
2249 const char *logfile_suffix;
2250 char tmp[MAXPATHLEN + sizeof(".0") + COMPRESS_SUFFIX_MAXLEN + 1];
2251
2252 if (archtodir) {
2253 char *p;
2254
2255 /* build name of archive directory into tmp */
2256 if (*archdirname == '/') { /* absolute */
2257 strlcpy(tmp, archdirname, sizeof(tmp));
2258 } else { /* relative */
2259 /* get directory part of logfile */
2260 strlcpy(tmp, file, sizeof(tmp));
2261 if ((p = strrchr(tmp, '/')) == NULL)
2262 tmp[0] = '\0';
2263 else
2264 *(p + 1) = '\0';
2265 strlcat(tmp, archdirname, sizeof(tmp));
2266 }
2267
2268 strlcat(tmp, "/", sizeof(tmp));
2269
2270 /* get filename part of logfile */
2271 if ((p = strrchr(file, '/')) == NULL)
2272 strlcat(tmp, file, sizeof(tmp));
2273 else
2274 strlcat(tmp, p + 1, sizeof(tmp));
2275 } else {
2276 (void) strlcpy(tmp, file, sizeof(tmp));
2277 }
2278
2279 strlcat(tmp, ".0", sizeof(tmp));
2280 logfile_suffix = get_logfile_suffix(tmp);
2281 if (logfile_suffix == NULL)
2282 return (-1);
2283 (void) strlcat(tmp, logfile_suffix, sizeof(tmp));
2284 if (stat(tmp, &sb) < 0)
2285 return (-1);
2286 return ((int)(ptimeget_secs(timenow) - sb.st_mtime + 1800) / 3600);
2287}
2288
2289/* Skip Over Blanks */
2290static char *
2291sob(char *p)
2292{
2293 while (p && *p && isspace(*p))
2294 p++;
2295 return (p);
2296}
2297
2298/* Skip Over Non-Blanks */
2299static char *
2300son(char *p)
2301{
2302 while (p && *p && !isspace(*p))
2303 p++;
2304 return (p);
2305}
2306
2307/* Check if string is actually a number */
2308static int
2309isnumberstr(const char *string)
2310{
2311 while (*string) {
2312 if (!isdigitch(*string++))
2313 return (0);
2314 }
2315 return (1);
2316}
2317
2318/* Check if string contains a glob */
2319static int
2320isglobstr(const char *string)
2321{
2322 char chr;
2323
2324 while ((chr = *string++)) {
2325 if (chr == '*' || chr == '?' || chr == '[')
2326 return (1);
2327 }
2328 return (0);
2329}
2330
2331/*
2332 * Save the active log file under a new name. A link to the new name
2333 * is the quick-and-easy way to do this. If that fails (which it will
2334 * if the destination is on another partition), then make a copy of
2335 * the file to the new location.
2336 */
2337static void
2338savelog(char *from, char *to)
2339{
2340 FILE *src, *dst;
2341 int c, res;
2342
2343 res = link(from, to);
2344 if (res == 0)
2345 return;
2346
2347 if ((src = fopen(from, "r")) == NULL)
2348 err(1, "can't fopen %s for reading", from);
2349 if ((dst = fopen(to, "w")) == NULL)
2350 err(1, "can't fopen %s for writing", to);
2351
2352 while ((c = getc(src)) != EOF) {
2353 if ((putc(c, dst)) == EOF)
2354 err(1, "error writing to %s", to);
2355 }
2356
2357 if (ferror(src))
2358 err(1, "error reading from %s", from);
2359 if ((fclose(src)) != 0)
2360 err(1, "can't fclose %s", to);
2361 if ((fclose(dst)) != 0)
2362 err(1, "can't fclose %s", from);
2363}
2364
2365/* create one or more directory components of a path */
2366static void
2367createdir(const struct conf_entry *ent, char *dirpart)
2368{
2369 int res;
2370 char *s, *d;
2371 char mkdirpath[MAXPATHLEN];
2372 struct stat st;
2373
2374 s = dirpart;
2375 d = mkdirpath;
2376
2377 for (;;) {
2378 *d++ = *s++;
2379 if (*s != '/' && *s != '\0')
2380 continue;
2381 *d = '\0';
2382 res = lstat(mkdirpath, &st);
2383 if (res != 0) {
2384 if (noaction) {
2385 printf("\tmkdir %s\n", mkdirpath);
2386 } else {
2387 res = mkdir(mkdirpath, 0755);
2388 if (res != 0)
2389 err(1, "Error on mkdir(\"%s\") for -a",
2390 mkdirpath);
2391 }
2392 }
2393 if (*s == '\0')
2394 break;
2395 }
2396 if (verbose) {
2397 if (ent->firstcreate)
2398 printf("Created directory '%s' for new %s\n",
2399 dirpart, ent->log);
2400 else
2401 printf("Created directory '%s' for -a\n", dirpart);
2402 }
2403}
2404
2405/*
2406 * Create a new log file, destroying any currently-existing version
2407 * of the log file in the process. If the caller wants a backup copy
2408 * of the file to exist, they should call 'link(logfile,logbackup)'
2409 * before calling this routine.
2410 */
2411void
2412createlog(const struct conf_entry *ent)
2413{
2414 int fd, failed;
2415 struct stat st;
2416 char *realfile, *slash, tempfile[MAXPATHLEN];
2417
2418 fd = -1;
2419 realfile = ent->log;
2420
2421 /*
2422 * If this log file is being created for the first time (-C option),
2423 * then it may also be true that the parent directory does not exist
2424 * yet. Check, and create that directory if it is missing.
2425 */
2426 if (ent->firstcreate) {
2427 strlcpy(tempfile, realfile, sizeof(tempfile));
2428 slash = strrchr(tempfile, '/');
2429 if (slash != NULL) {
2430 *slash = '\0';
2431 failed = stat(tempfile, &st);
2432 if (failed && errno != ENOENT)
2433 err(1, "Error on stat(%s)", tempfile);
2434 if (failed)
2435 createdir(ent, tempfile);
2436 else if (!S_ISDIR(st.st_mode))
2437 errx(1, "%s exists but is not a directory",
2438 tempfile);
2439 }
2440 }
2441
2442 /*
2443 * First create an unused filename, so it can be chown'ed and
2444 * chmod'ed before it is moved into the real location. mkstemp
2445 * will create the file mode=600 & owned by us. Note that all
2446 * temp files will have a suffix of '.z<something>'.
2447 */
2448 strlcpy(tempfile, realfile, sizeof(tempfile));
2449 strlcat(tempfile, ".zXXXXXX", sizeof(tempfile));
2450 if (noaction)
2451 printf("\tmktemp %s\n", tempfile);
2452 else {
2453 fd = mkstemp(tempfile);
2454 if (fd < 0)
2455 err(1, "can't mkstemp logfile %s", tempfile);
2456
2457 /*
2458 * Add status message to what will become the new log file.
2459 */
2460 if (!(ent->flags & CE_BINARY)) {
2461 if (log_trim(tempfile, ent))
2462 err(1, "can't add status message to log");
2463 }
2464 }
2465
2466 /* Change the owner/group, if we are supposed to */
2467 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2468 if (noaction)
2469 printf("\tchown %u:%u %s\n", ent->uid, ent->gid,
2470 tempfile);
2471 else {
2472 failed = fchown(fd, ent->uid, ent->gid);
2473 if (failed)
2474 err(1, "can't fchown temp file %s", tempfile);
2475 }
2476 }
2477
2478 /* Turn on NODUMP if it was requested in the config-file. */
2479 if (ent->flags & CE_NODUMP) {
2480 if (noaction)
2481 printf("\tchflags nodump %s\n", tempfile);
2482 else {
2483 failed = fchflags(fd, UF_NODUMP);
2484 if (failed) {
2485 warn("log_trim: fchflags(NODUMP)");
2486 }
2487 }
2488 }
2489
2490 /*
2491 * Note that if the real logfile still exists, and if the call
2492 * to rename() fails, then "neither the old file nor the new
2493 * file shall be changed or created" (to quote the standard).
2494 * If the call succeeds, then the file will be replaced without
2495 * any window where some other process might find that the file
2496 * did not exist.
2497 * XXX - ? It may be that for some error conditions, we could
2498 * retry by first removing the realfile and then renaming.
2499 */
2500 if (noaction) {
2501 printf("\tchmod %o %s\n", ent->permissions, tempfile);
2502 printf("\tmv %s %s\n", tempfile, realfile);
2503 } else {
2504 failed = fchmod(fd, ent->permissions);
2505 if (failed)
2506 err(1, "can't fchmod temp file '%s'", tempfile);
2507 failed = rename(tempfile, realfile);
2508 if (failed)
2509 err(1, "can't mv %s to %s", tempfile, realfile);
2510 }
2511
2512 if (fd >= 0)
2513 close(fd);
2514}
2515
2516/*
2517 * Change the attributes of a given filename to what was specified in
2518 * the newsyslog.conf entry. This routine is only called for files
2519 * that newsyslog expects that it has created, and thus it is a fatal
2520 * error if this routine finds that the file does not exist.
2521 */
2522static void
2523change_attrs(const char *fname, const struct conf_entry *ent)
2524{
2525 int failed;
2526
2527 if (noaction) {
2528 printf("\tchmod %o %s\n", ent->permissions, fname);
2529
2530 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
2531 printf("\tchown %u:%u %s\n",
2532 ent->uid, ent->gid, fname);
2533
2534 if (ent->flags & CE_NODUMP)
2535 printf("\tchflags nodump %s\n", fname);
2536 return;
2537 }
2538
2539 failed = chmod(fname, ent->permissions);
2540 if (failed) {
2541 if (errno != EPERM)
2542 err(1, "chmod(%s) in change_attrs", fname);
2543 warn("change_attrs couldn't chmod(%s)", fname);
2544 }
2545
2546 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2547 failed = chown(fname, ent->uid, ent->gid);
2548 if (failed)
2549 warn("can't chown %s", fname);
2550 }
2551
2552 if (ent->flags & CE_NODUMP) {
2553 failed = chflags(fname, UF_NODUMP);
2554 if (failed)
2555 warn("can't chflags %s NODUMP", fname);
2556 }
2557}
| 1582 snprintf(errbuf, sizeof(errbuf),
1583 "Could not delet old logfile '%s'",
1584 oldlogs[i].fname);
1585 perror(errbuf);
1586 }
1587 }
1588 } else if (verbose > 1)
1589 printf("No old logs to delete for logfile %s\n", ent->log);
1590
1591 /* Third, cleanup */
1592 closedir(dirp);
1593 for (i = 0; i < logcnt; i++) {
1594 assert(oldlogs[i].fname != NULL);
1595 free(oldlogs[i].fname);
1596 }
1597 free(oldlogs);
1598 free(logfname);
1599 free(dir);
1600}
1601
1602/*
1603 * Generate a log filename, when using classic filenames.
1604 */
1605static void
1606gen_classiclog_fname(char *fname, size_t fname_sz, const char *archive_dir,
1607 const char *namepart, int numlogs_c)
1608{
1609
1610 if (archive_dir[0] != '\0')
1611 (void) snprintf(fname, fname_sz, "%s/%s.%d", archive_dir,
1612 namepart, numlogs_c);
1613 else
1614 (void) snprintf(fname, fname_sz, "%s.%d", namepart, numlogs_c);
1615}
1616
1617/*
1618 * Delete a rotated logfile, when using classic filenames.
1619 */
1620static void
1621delete_classiclog(const char *archive_dir, const char *namepart, int numlog_c)
1622{
1623 char file1[MAXPATHLEN], zfile1[MAXPATHLEN];
1624 int c;
1625
1626 gen_classiclog_fname(file1, sizeof(file1), archive_dir, namepart,
1627 numlog_c);
1628
1629 for (c = 0; c < COMPRESS_TYPES; c++) {
1630 (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
1631 compress_type[c].suffix);
1632 if (noaction)
1633 printf("\trm -f %s\n", zfile1);
1634 else
1635 (void) unlink(zfile1);
1636 }
1637}
1638
1639/*
1640 * Only add to the queue if the file hasn't already been added. This is
1641 * done to prevent circular include loops.
1642 */
1643static void
1644add_to_queue(const char *fname, struct ilist *inclist)
1645{
1646 struct include_entry *inc;
1647
1648 STAILQ_FOREACH(inc, inclist, inc_nextp) {
1649 if (strcmp(fname, inc->file) == 0) {
1650 warnx("duplicate include detected: %s", fname);
1651 return;
1652 }
1653 }
1654
1655 inc = malloc(sizeof(struct include_entry));
1656 if (inc == NULL)
1657 err(1, "malloc of inc");
1658 inc->file = strdup(fname);
1659
1660 if (verbose > 2)
1661 printf("\t+ Adding %s to the processing queue.\n", fname);
1662
1663 STAILQ_INSERT_TAIL(inclist, inc, inc_nextp);
1664}
1665
1666/*
1667 * Search for logfile and return its compression suffix (if supported)
1668 * The suffix detection is first-match in the order of compress_types
1669 *
1670 * Note: if logfile without suffix exists (uncompressed, COMPRESS_NONE)
1671 * a zero-length string is returned
1672 */
1673static const char *
1674get_logfile_suffix(const char *logfile)
1675{
1676 struct stat st;
1677 char zfile[MAXPATHLEN];
1678 int c;
1679
1680 for (c = 0; c < COMPRESS_TYPES; c++) {
1681 (void) strlcpy(zfile, logfile, MAXPATHLEN);
1682 (void) strlcat(zfile, compress_type[c].suffix, MAXPATHLEN);
1683 if (lstat(zfile, &st) == 0)
1684 return (compress_type[c].suffix);
1685 }
1686 return (NULL);
1687}
1688
1689static fk_entry
1690do_rotate(const struct conf_entry *ent)
1691{
1692 char dirpart[MAXPATHLEN], namepart[MAXPATHLEN];
1693 char file1[MAXPATHLEN], file2[MAXPATHLEN];
1694 char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN];
1695 const char *logfile_suffix;
1696 char datetimestr[30];
1697 int flags, numlogs_c;
1698 fk_entry free_or_keep;
1699 struct sigwork_entry *swork;
1700 struct stat st;
1701 struct tm tm;
1702 time_t now;
1703
1704 flags = ent->flags;
1705 free_or_keep = FREE_ENT;
1706
1707 if (archtodir) {
1708 char *p;
1709
1710 /* build complete name of archive directory into dirpart */
1711 if (*archdirname == '/') { /* absolute */
1712 strlcpy(dirpart, archdirname, sizeof(dirpart));
1713 } else { /* relative */
1714 /* get directory part of logfile */
1715 strlcpy(dirpart, ent->log, sizeof(dirpart));
1716 if ((p = strrchr(dirpart, '/')) == NULL)
1717 dirpart[0] = '\0';
1718 else
1719 *(p + 1) = '\0';
1720 strlcat(dirpart, archdirname, sizeof(dirpart));
1721 }
1722
1723 /* check if archive directory exists, if not, create it */
1724 if (lstat(dirpart, &st))
1725 createdir(ent, dirpart);
1726
1727 /* get filename part of logfile */
1728 if ((p = strrchr(ent->log, '/')) == NULL)
1729 strlcpy(namepart, ent->log, sizeof(namepart));
1730 else
1731 strlcpy(namepart, p + 1, sizeof(namepart));
1732 } else {
1733 /*
1734 * Tell utility functions we are not using an archive
1735 * dir.
1736 */
1737 dirpart[0] = '\0';
1738 strlcpy(namepart, ent->log, sizeof(namepart));
1739 }
1740
1741 /* Delete old logs */
1742 if (timefnamefmt != NULL)
1743 delete_oldest_timelog(ent, dirpart);
1744 else {
1745 /*
1746 * Handle cleaning up after legacy newsyslog where we
1747 * kept ent->numlogs + 1 files. This code can go away
1748 * at some point in the future.
1749 */
1750 delete_classiclog(dirpart, namepart, ent->numlogs);
1751
1752 if (ent->numlogs > 0)
1753 delete_classiclog(dirpart, namepart, ent->numlogs - 1);
1754
1755 }
1756
1757 if (timefnamefmt != NULL) {
1758 /* If time functions fails we can't really do any sensible */
1759 if (time(&now) == (time_t)-1 ||
1760 localtime_r(&now, &tm) == NULL)
1761 bzero(&tm, sizeof(tm));
1762
1763 strftime(datetimestr, sizeof(datetimestr), timefnamefmt, &tm);
1764 if (archtodir)
1765 (void) snprintf(file1, sizeof(file1), "%s/%s.%s",
1766 dirpart, namepart, datetimestr);
1767 else
1768 (void) snprintf(file1, sizeof(file1), "%s.%s",
1769 ent->log, datetimestr);
1770
1771 /* Don't run the code to move down logs */
1772 numlogs_c = -1;
1773 } else {
1774 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1775 ent->numlogs - 1);
1776 numlogs_c = ent->numlogs - 2; /* copy for countdown */
1777 }
1778
1779 /* Move down log files */
1780 for (; numlogs_c >= 0; numlogs_c--) {
1781 (void) strlcpy(file2, file1, sizeof(file2));
1782
1783 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1784 numlogs_c);
1785
1786 logfile_suffix = get_logfile_suffix(file1);
1787 if (logfile_suffix == NULL)
1788 continue;
1789 (void) strlcpy(zfile1, file1, MAXPATHLEN);
1790 (void) strlcpy(zfile2, file2, MAXPATHLEN);
1791 (void) strlcat(zfile1, logfile_suffix, MAXPATHLEN);
1792 (void) strlcat(zfile2, logfile_suffix, MAXPATHLEN);
1793
1794 if (noaction)
1795 printf("\tmv %s %s\n", zfile1, zfile2);
1796 else {
1797 /* XXX - Ought to be checking for failure! */
1798 (void)rename(zfile1, zfile2);
1799 }
1800 change_attrs(zfile2, ent);
1801 }
1802
1803 if (ent->numlogs > 0) {
1804 if (noaction) {
1805 /*
1806 * Note that savelog() may succeed with using link()
1807 * for the archtodir case, but there is no good way
1808 * of knowing if it will when doing "noaction", so
1809 * here we claim that it will have to do a copy...
1810 */
1811 if (archtodir)
1812 printf("\tcp %s %s\n", ent->log, file1);
1813 else
1814 printf("\tln %s %s\n", ent->log, file1);
1815 } else {
1816 if (!(flags & CE_BINARY)) {
1817 /* Report the trimming to the old log */
1818 log_trim(ent->log, ent);
1819 }
1820 savelog(ent->log, file1);
1821 }
1822 change_attrs(file1, ent);
1823 }
1824
1825 /* Create the new log file and move it into place */
1826 if (noaction)
1827 printf("Start new log...\n");
1828 createlog(ent);
1829
1830 /*
1831 * Save all signalling and file-compression to be done after log
1832 * files from all entries have been rotated. This way any one
1833 * process will not be sent the same signal multiple times when
1834 * multiple log files had to be rotated.
1835 */
1836 swork = NULL;
1837 if (ent->pid_cmd_file != NULL)
1838 swork = save_sigwork(ent);
1839 if (ent->numlogs > 0 && ent->compress > COMPRESS_NONE) {
1840 /*
1841 * The zipwork_entry will include a pointer to this
1842 * conf_entry, so the conf_entry should not be freed.
1843 */
1844 free_or_keep = KEEP_ENT;
1845 save_zipwork(ent, swork, ent->fsize, file1);
1846 }
1847
1848 return (free_or_keep);
1849}
1850
1851static void
1852do_sigwork(struct sigwork_entry *swork)
1853{
1854 struct sigwork_entry *nextsig;
1855 int kres, secs;
1856 char *tmp;
1857
1858 if (!(swork->sw_pidok) || swork->sw_pid == 0)
1859 return; /* no work to do... */
1860
1861 /*
1862 * If nosignal (-s) was specified, then do not signal any process.
1863 * Note that a nosignal request triggers a warning message if the
1864 * rotated logfile needs to be compressed, *unless* -R was also
1865 * specified. We assume that an `-sR' request came from a process
1866 * which writes to the logfile, and as such, we assume that process
1867 * has already made sure the logfile is not presently in use. This
1868 * just sets swork->sw_pidok to a special value, and do_zipwork
1869 * will print any necessary warning(s).
1870 */
1871 if (nosignal) {
1872 if (!rotatereq)
1873 swork->sw_pidok = -1;
1874 return;
1875 }
1876
1877 /*
1878 * Compute the pause between consecutive signals. Use a longer
1879 * sleep time if we will be sending two signals to the same
1880 * deamon or process-group.
1881 */
1882 secs = 0;
1883 nextsig = SLIST_NEXT(swork, sw_nextp);
1884 if (nextsig != NULL) {
1885 if (swork->sw_pid == nextsig->sw_pid)
1886 secs = 10;
1887 else
1888 secs = 1;
1889 }
1890
1891 if (noaction) {
1892 printf("\tkill -%d %d \t\t# %s\n", swork->sw_signum,
1893 (int)swork->sw_pid, swork->sw_fname);
1894 if (secs > 0)
1895 printf("\tsleep %d\n", secs);
1896 return;
1897 }
1898
1899 if (swork->run_cmd) {
1900 asprintf(&tmp, "%s %d", swork->sw_fname, swork->sw_signum);
1901 if (tmp == NULL) {
1902 warn("can't allocate memory to run %s",
1903 swork->sw_fname);
1904 return;
1905 }
1906 if (verbose)
1907 printf("Run command: %s\n", tmp);
1908 kres = system(tmp);
1909 if (kres) {
1910 warnx("%s: returned non-zero exit code: %d",
1911 tmp, kres);
1912 }
1913 free(tmp);
1914 return;
1915 }
1916
1917 kres = kill(swork->sw_pid, swork->sw_signum);
1918 if (kres != 0) {
1919 /*
1920 * Assume that "no such process" (ESRCH) is something
1921 * to warn about, but is not an error. Presumably the
1922 * process which writes to the rotated log file(s) is
1923 * gone, in which case we should have no problem with
1924 * compressing the rotated log file(s).
1925 */
1926 if (errno != ESRCH)
1927 swork->sw_pidok = 0;
1928 warn("can't notify %s, pid %d", swork->sw_pidtype,
1929 (int)swork->sw_pid);
1930 } else {
1931 if (verbose)
1932 printf("Notified %s pid %d = %s\n", swork->sw_pidtype,
1933 (int)swork->sw_pid, swork->sw_fname);
1934 if (secs > 0) {
1935 if (verbose)
1936 printf("Pause %d second(s) between signals\n",
1937 secs);
1938 sleep(secs);
1939 }
1940 }
1941}
1942
1943static void
1944do_zipwork(struct zipwork_entry *zwork)
1945{
1946 const char *pgm_name, *pgm_path;
1947 int errsav, fcount, zstatus;
1948 pid_t pidzip, wpid;
1949 char zresult[MAXPATHLEN];
1950 int c;
1951
1952 assert(zwork != NULL);
1953 pgm_path = NULL;
1954 strlcpy(zresult, zwork->zw_fname, sizeof(zresult));
1955 if (zwork->zw_conf != NULL &&
1956 zwork->zw_conf->compress > COMPRESS_NONE)
1957 for (c = 1; c < COMPRESS_TYPES; c++) {
1958 if (zwork->zw_conf->compress == c) {
1959 pgm_path = compress_type[c].path;
1960 (void) strlcat(zresult,
1961 compress_type[c].suffix, sizeof(zresult));
1962 break;
1963 }
1964 }
1965 if (pgm_path == NULL) {
1966 warnx("invalid entry for %s in do_zipwork", zwork->zw_fname);
1967 return;
1968 }
1969 pgm_name = strrchr(pgm_path, '/');
1970 if (pgm_name == NULL)
1971 pgm_name = pgm_path;
1972 else
1973 pgm_name++;
1974
1975 if (zwork->zw_swork != NULL && zwork->zw_swork->sw_pidok <= 0) {
1976 warnx(
1977 "log %s not compressed because daemon(s) not notified",
1978 zwork->zw_fname);
1979 change_attrs(zwork->zw_fname, zwork->zw_conf);
1980 return;
1981 }
1982
1983 if (noaction) {
1984 printf("\t%s %s\n", pgm_name, zwork->zw_fname);
1985 change_attrs(zresult, zwork->zw_conf);
1986 return;
1987 }
1988
1989 fcount = 1;
1990 pidzip = fork();
1991 while (pidzip < 0) {
1992 /*
1993 * The fork failed. If the failure was due to a temporary
1994 * problem, then wait a short time and try it again.
1995 */
1996 errsav = errno;
1997 warn("fork() for `%s %s'", pgm_name, zwork->zw_fname);
1998 if (errsav != EAGAIN || fcount > 5)
1999 errx(1, "Exiting...");
2000 sleep(fcount * 12);
2001 fcount++;
2002 pidzip = fork();
2003 }
2004 if (!pidzip) {
2005 /* The child process executes the compression command */
2006 execl(pgm_path, pgm_path, "-f", zwork->zw_fname, (char *)0);
2007 err(1, "execl(`%s -f %s')", pgm_path, zwork->zw_fname);
2008 }
2009
2010 wpid = waitpid(pidzip, &zstatus, 0);
2011 if (wpid == -1) {
2012 /* XXX - should this be a fatal error? */
2013 warn("%s: waitpid(%d)", pgm_path, pidzip);
2014 return;
2015 }
2016 if (!WIFEXITED(zstatus)) {
2017 warnx("`%s -f %s' did not terminate normally", pgm_name,
2018 zwork->zw_fname);
2019 return;
2020 }
2021 if (WEXITSTATUS(zstatus)) {
2022 warnx("`%s -f %s' terminated with a non-zero status (%d)",
2023 pgm_name, zwork->zw_fname, WEXITSTATUS(zstatus));
2024 return;
2025 }
2026
2027 /* Compression was successful, set file attributes on the result. */
2028 change_attrs(zresult, zwork->zw_conf);
2029}
2030
2031/*
2032 * Save information on any process we need to signal. Any single
2033 * process may need to be sent different signal-values for different
2034 * log files, but usually a single signal-value will cause the process
2035 * to close and re-open all of it's log files.
2036 */
2037static struct sigwork_entry *
2038save_sigwork(const struct conf_entry *ent)
2039{
2040 struct sigwork_entry *sprev, *stmp;
2041 int ndiff;
2042 size_t tmpsiz;
2043
2044 sprev = NULL;
2045 ndiff = 1;
2046 SLIST_FOREACH(stmp, &swhead, sw_nextp) {
2047 ndiff = strcmp(ent->pid_cmd_file, stmp->sw_fname);
2048 if (ndiff > 0)
2049 break;
2050 if (ndiff == 0) {
2051 if (ent->sig == stmp->sw_signum)
2052 break;
2053 if (ent->sig > stmp->sw_signum) {
2054 ndiff = 1;
2055 break;
2056 }
2057 }
2058 sprev = stmp;
2059 }
2060 if (stmp != NULL && ndiff == 0)
2061 return (stmp);
2062
2063 tmpsiz = sizeof(struct sigwork_entry) + strlen(ent->pid_cmd_file) + 1;
2064 stmp = malloc(tmpsiz);
2065
2066 stmp->run_cmd = 0;
2067 /* If this is a command to run we just set the flag and run command */
2068 if (ent->flags & CE_PID2CMD) {
2069 stmp->run_cmd = 1;
2070 } else {
2071 set_swpid(stmp, ent);
2072 }
2073 stmp->sw_signum = ent->sig;
2074 strcpy(stmp->sw_fname, ent->pid_cmd_file);
2075 if (sprev == NULL)
2076 SLIST_INSERT_HEAD(&swhead, stmp, sw_nextp);
2077 else
2078 SLIST_INSERT_AFTER(sprev, stmp, sw_nextp);
2079 return (stmp);
2080}
2081
2082/*
2083 * Save information on any file we need to compress. We may see the same
2084 * file multiple times, so check the full list to avoid duplicates. The
2085 * list itself is sorted smallest-to-largest, because that's the order we
2086 * want to compress the files. If the partition is very low on disk space,
2087 * then the smallest files are the most likely to compress, and compressing
2088 * them first will free up more space for the larger files.
2089 */
2090static struct zipwork_entry *
2091save_zipwork(const struct conf_entry *ent, const struct sigwork_entry *swork,
2092 int zsize, const char *zipfname)
2093{
2094 struct zipwork_entry *zprev, *ztmp;
2095 int ndiff;
2096 size_t tmpsiz;
2097
2098 /* Compute the size if the caller did not know it. */
2099 if (zsize < 0)
2100 zsize = sizefile(zipfname);
2101
2102 zprev = NULL;
2103 ndiff = 1;
2104 SLIST_FOREACH(ztmp, &zwhead, zw_nextp) {
2105 ndiff = strcmp(zipfname, ztmp->zw_fname);
2106 if (ndiff == 0)
2107 break;
2108 if (zsize > ztmp->zw_fsize)
2109 zprev = ztmp;
2110 }
2111 if (ztmp != NULL && ndiff == 0)
2112 return (ztmp);
2113
2114 tmpsiz = sizeof(struct zipwork_entry) + strlen(zipfname) + 1;
2115 ztmp = malloc(tmpsiz);
2116 ztmp->zw_conf = ent;
2117 ztmp->zw_swork = swork;
2118 ztmp->zw_fsize = zsize;
2119 strcpy(ztmp->zw_fname, zipfname);
2120 if (zprev == NULL)
2121 SLIST_INSERT_HEAD(&zwhead, ztmp, zw_nextp);
2122 else
2123 SLIST_INSERT_AFTER(zprev, ztmp, zw_nextp);
2124 return (ztmp);
2125}
2126
2127/* Send a signal to the pid specified by pidfile */
2128static void
2129set_swpid(struct sigwork_entry *swork, const struct conf_entry *ent)
2130{
2131 FILE *f;
2132 long minok, maxok, rval;
2133 char *endp, *linep, line[BUFSIZ];
2134
2135 minok = MIN_PID;
2136 maxok = MAX_PID;
2137 swork->sw_pidok = 0;
2138 swork->sw_pid = 0;
2139 swork->sw_pidtype = "daemon";
2140 if (ent->flags & CE_SIGNALGROUP) {
2141 /*
2142 * If we are expected to signal a process-group when
2143 * rotating this logfile, then the value read in should
2144 * be the negative of a valid process ID.
2145 */
2146 minok = -MAX_PID;
2147 maxok = -MIN_PID;
2148 swork->sw_pidtype = "process-group";
2149 }
2150
2151 f = fopen(ent->pid_cmd_file, "r");
2152 if (f == NULL) {
2153 if (errno == ENOENT && enforcepid == 0) {
2154 /*
2155 * Warn if the PID file doesn't exist, but do
2156 * not consider it an error. Most likely it
2157 * means the process has been terminated,
2158 * so it should be safe to rotate any log
2159 * files that the process would have been using.
2160 */
2161 swork->sw_pidok = 1;
2162 warnx("pid file doesn't exist: %s", ent->pid_cmd_file);
2163 } else
2164 warn("can't open pid file: %s", ent->pid_cmd_file);
2165 return;
2166 }
2167
2168 if (fgets(line, BUFSIZ, f) == NULL) {
2169 /*
2170 * Warn if the PID file is empty, but do not consider
2171 * it an error. Most likely it means the process has
2172 * has terminated, so it should be safe to rotate any
2173 * log files that the process would have been using.
2174 */
2175 if (feof(f) && enforcepid == 0) {
2176 swork->sw_pidok = 1;
2177 warnx("pid/cmd file is empty: %s", ent->pid_cmd_file);
2178 } else
2179 warn("can't read from pid file: %s", ent->pid_cmd_file);
2180 (void)fclose(f);
2181 return;
2182 }
2183 (void)fclose(f);
2184
2185 errno = 0;
2186 linep = line;
2187 while (*linep == ' ')
2188 linep++;
2189 rval = strtol(linep, &endp, 10);
2190 if (*endp != '\0' && !isspacech(*endp)) {
2191 warnx("pid file does not start with a valid number: %s",
2192 ent->pid_cmd_file);
2193 } else if (rval < minok || rval > maxok) {
2194 warnx("bad value '%ld' for process number in %s",
2195 rval, ent->pid_cmd_file);
2196 if (verbose)
2197 warnx("\t(expecting value between %ld and %ld)",
2198 minok, maxok);
2199 } else {
2200 swork->sw_pidok = 1;
2201 swork->sw_pid = rval;
2202 }
2203
2204 return;
2205}
2206
2207/* Log the fact that the logs were turned over */
2208static int
2209log_trim(const char *logname, const struct conf_entry *log_ent)
2210{
2211 FILE *f;
2212 const char *xtra;
2213
2214 if ((f = fopen(logname, "a")) == NULL)
2215 return (-1);
2216 xtra = "";
2217 if (log_ent->def_cfg)
2218 xtra = " using <default> rule";
2219 if (log_ent->firstcreate)
2220 fprintf(f, "%s %s newsyslog[%d]: logfile first created%s\n",
2221 daytime, hostname, (int) getpid(), xtra);
2222 else if (log_ent->r_reason != NULL)
2223 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s%s\n",
2224 daytime, hostname, (int) getpid(), log_ent->r_reason, xtra);
2225 else
2226 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s\n",
2227 daytime, hostname, (int) getpid(), xtra);
2228 if (fclose(f) == EOF)
2229 err(1, "log_trim: fclose");
2230 return (0);
2231}
2232
2233/* Return size in kilobytes of a file */
2234static int
2235sizefile(const char *file)
2236{
2237 struct stat sb;
2238
2239 if (stat(file, &sb) < 0)
2240 return (-1);
2241 return (kbytes(dbtob(sb.st_blocks)));
2242}
2243
2244/* Return the age of old log file (file.0) */
2245static int
2246age_old_log(char *file)
2247{
2248 struct stat sb;
2249 const char *logfile_suffix;
2250 char tmp[MAXPATHLEN + sizeof(".0") + COMPRESS_SUFFIX_MAXLEN + 1];
2251
2252 if (archtodir) {
2253 char *p;
2254
2255 /* build name of archive directory into tmp */
2256 if (*archdirname == '/') { /* absolute */
2257 strlcpy(tmp, archdirname, sizeof(tmp));
2258 } else { /* relative */
2259 /* get directory part of logfile */
2260 strlcpy(tmp, file, sizeof(tmp));
2261 if ((p = strrchr(tmp, '/')) == NULL)
2262 tmp[0] = '\0';
2263 else
2264 *(p + 1) = '\0';
2265 strlcat(tmp, archdirname, sizeof(tmp));
2266 }
2267
2268 strlcat(tmp, "/", sizeof(tmp));
2269
2270 /* get filename part of logfile */
2271 if ((p = strrchr(file, '/')) == NULL)
2272 strlcat(tmp, file, sizeof(tmp));
2273 else
2274 strlcat(tmp, p + 1, sizeof(tmp));
2275 } else {
2276 (void) strlcpy(tmp, file, sizeof(tmp));
2277 }
2278
2279 strlcat(tmp, ".0", sizeof(tmp));
2280 logfile_suffix = get_logfile_suffix(tmp);
2281 if (logfile_suffix == NULL)
2282 return (-1);
2283 (void) strlcat(tmp, logfile_suffix, sizeof(tmp));
2284 if (stat(tmp, &sb) < 0)
2285 return (-1);
2286 return ((int)(ptimeget_secs(timenow) - sb.st_mtime + 1800) / 3600);
2287}
2288
2289/* Skip Over Blanks */
2290static char *
2291sob(char *p)
2292{
2293 while (p && *p && isspace(*p))
2294 p++;
2295 return (p);
2296}
2297
2298/* Skip Over Non-Blanks */
2299static char *
2300son(char *p)
2301{
2302 while (p && *p && !isspace(*p))
2303 p++;
2304 return (p);
2305}
2306
2307/* Check if string is actually a number */
2308static int
2309isnumberstr(const char *string)
2310{
2311 while (*string) {
2312 if (!isdigitch(*string++))
2313 return (0);
2314 }
2315 return (1);
2316}
2317
2318/* Check if string contains a glob */
2319static int
2320isglobstr(const char *string)
2321{
2322 char chr;
2323
2324 while ((chr = *string++)) {
2325 if (chr == '*' || chr == '?' || chr == '[')
2326 return (1);
2327 }
2328 return (0);
2329}
2330
2331/*
2332 * Save the active log file under a new name. A link to the new name
2333 * is the quick-and-easy way to do this. If that fails (which it will
2334 * if the destination is on another partition), then make a copy of
2335 * the file to the new location.
2336 */
2337static void
2338savelog(char *from, char *to)
2339{
2340 FILE *src, *dst;
2341 int c, res;
2342
2343 res = link(from, to);
2344 if (res == 0)
2345 return;
2346
2347 if ((src = fopen(from, "r")) == NULL)
2348 err(1, "can't fopen %s for reading", from);
2349 if ((dst = fopen(to, "w")) == NULL)
2350 err(1, "can't fopen %s for writing", to);
2351
2352 while ((c = getc(src)) != EOF) {
2353 if ((putc(c, dst)) == EOF)
2354 err(1, "error writing to %s", to);
2355 }
2356
2357 if (ferror(src))
2358 err(1, "error reading from %s", from);
2359 if ((fclose(src)) != 0)
2360 err(1, "can't fclose %s", to);
2361 if ((fclose(dst)) != 0)
2362 err(1, "can't fclose %s", from);
2363}
2364
2365/* create one or more directory components of a path */
2366static void
2367createdir(const struct conf_entry *ent, char *dirpart)
2368{
2369 int res;
2370 char *s, *d;
2371 char mkdirpath[MAXPATHLEN];
2372 struct stat st;
2373
2374 s = dirpart;
2375 d = mkdirpath;
2376
2377 for (;;) {
2378 *d++ = *s++;
2379 if (*s != '/' && *s != '\0')
2380 continue;
2381 *d = '\0';
2382 res = lstat(mkdirpath, &st);
2383 if (res != 0) {
2384 if (noaction) {
2385 printf("\tmkdir %s\n", mkdirpath);
2386 } else {
2387 res = mkdir(mkdirpath, 0755);
2388 if (res != 0)
2389 err(1, "Error on mkdir(\"%s\") for -a",
2390 mkdirpath);
2391 }
2392 }
2393 if (*s == '\0')
2394 break;
2395 }
2396 if (verbose) {
2397 if (ent->firstcreate)
2398 printf("Created directory '%s' for new %s\n",
2399 dirpart, ent->log);
2400 else
2401 printf("Created directory '%s' for -a\n", dirpart);
2402 }
2403}
2404
2405/*
2406 * Create a new log file, destroying any currently-existing version
2407 * of the log file in the process. If the caller wants a backup copy
2408 * of the file to exist, they should call 'link(logfile,logbackup)'
2409 * before calling this routine.
2410 */
2411void
2412createlog(const struct conf_entry *ent)
2413{
2414 int fd, failed;
2415 struct stat st;
2416 char *realfile, *slash, tempfile[MAXPATHLEN];
2417
2418 fd = -1;
2419 realfile = ent->log;
2420
2421 /*
2422 * If this log file is being created for the first time (-C option),
2423 * then it may also be true that the parent directory does not exist
2424 * yet. Check, and create that directory if it is missing.
2425 */
2426 if (ent->firstcreate) {
2427 strlcpy(tempfile, realfile, sizeof(tempfile));
2428 slash = strrchr(tempfile, '/');
2429 if (slash != NULL) {
2430 *slash = '\0';
2431 failed = stat(tempfile, &st);
2432 if (failed && errno != ENOENT)
2433 err(1, "Error on stat(%s)", tempfile);
2434 if (failed)
2435 createdir(ent, tempfile);
2436 else if (!S_ISDIR(st.st_mode))
2437 errx(1, "%s exists but is not a directory",
2438 tempfile);
2439 }
2440 }
2441
2442 /*
2443 * First create an unused filename, so it can be chown'ed and
2444 * chmod'ed before it is moved into the real location. mkstemp
2445 * will create the file mode=600 & owned by us. Note that all
2446 * temp files will have a suffix of '.z<something>'.
2447 */
2448 strlcpy(tempfile, realfile, sizeof(tempfile));
2449 strlcat(tempfile, ".zXXXXXX", sizeof(tempfile));
2450 if (noaction)
2451 printf("\tmktemp %s\n", tempfile);
2452 else {
2453 fd = mkstemp(tempfile);
2454 if (fd < 0)
2455 err(1, "can't mkstemp logfile %s", tempfile);
2456
2457 /*
2458 * Add status message to what will become the new log file.
2459 */
2460 if (!(ent->flags & CE_BINARY)) {
2461 if (log_trim(tempfile, ent))
2462 err(1, "can't add status message to log");
2463 }
2464 }
2465
2466 /* Change the owner/group, if we are supposed to */
2467 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2468 if (noaction)
2469 printf("\tchown %u:%u %s\n", ent->uid, ent->gid,
2470 tempfile);
2471 else {
2472 failed = fchown(fd, ent->uid, ent->gid);
2473 if (failed)
2474 err(1, "can't fchown temp file %s", tempfile);
2475 }
2476 }
2477
2478 /* Turn on NODUMP if it was requested in the config-file. */
2479 if (ent->flags & CE_NODUMP) {
2480 if (noaction)
2481 printf("\tchflags nodump %s\n", tempfile);
2482 else {
2483 failed = fchflags(fd, UF_NODUMP);
2484 if (failed) {
2485 warn("log_trim: fchflags(NODUMP)");
2486 }
2487 }
2488 }
2489
2490 /*
2491 * Note that if the real logfile still exists, and if the call
2492 * to rename() fails, then "neither the old file nor the new
2493 * file shall be changed or created" (to quote the standard).
2494 * If the call succeeds, then the file will be replaced without
2495 * any window where some other process might find that the file
2496 * did not exist.
2497 * XXX - ? It may be that for some error conditions, we could
2498 * retry by first removing the realfile and then renaming.
2499 */
2500 if (noaction) {
2501 printf("\tchmod %o %s\n", ent->permissions, tempfile);
2502 printf("\tmv %s %s\n", tempfile, realfile);
2503 } else {
2504 failed = fchmod(fd, ent->permissions);
2505 if (failed)
2506 err(1, "can't fchmod temp file '%s'", tempfile);
2507 failed = rename(tempfile, realfile);
2508 if (failed)
2509 err(1, "can't mv %s to %s", tempfile, realfile);
2510 }
2511
2512 if (fd >= 0)
2513 close(fd);
2514}
2515
2516/*
2517 * Change the attributes of a given filename to what was specified in
2518 * the newsyslog.conf entry. This routine is only called for files
2519 * that newsyslog expects that it has created, and thus it is a fatal
2520 * error if this routine finds that the file does not exist.
2521 */
2522static void
2523change_attrs(const char *fname, const struct conf_entry *ent)
2524{
2525 int failed;
2526
2527 if (noaction) {
2528 printf("\tchmod %o %s\n", ent->permissions, fname);
2529
2530 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
2531 printf("\tchown %u:%u %s\n",
2532 ent->uid, ent->gid, fname);
2533
2534 if (ent->flags & CE_NODUMP)
2535 printf("\tchflags nodump %s\n", fname);
2536 return;
2537 }
2538
2539 failed = chmod(fname, ent->permissions);
2540 if (failed) {
2541 if (errno != EPERM)
2542 err(1, "chmod(%s) in change_attrs", fname);
2543 warn("change_attrs couldn't chmod(%s)", fname);
2544 }
2545
2546 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2547 failed = chown(fname, ent->uid, ent->gid);
2548 if (failed)
2549 warn("can't chown %s", fname);
2550 }
2551
2552 if (ent->flags & CE_NODUMP) {
2553 failed = chflags(fname, UF_NODUMP);
2554 if (failed)
2555 warn("can't chflags %s NODUMP", fname);
2556 }
2557}
|