/usr.sbin/newsyslog/newsyslog.c
C | 2558 lines | 1851 code | 243 blank | 464 comment | 622 complexity | cd6704cb1be1d99eb3160835f591c371 MD5 | raw file
Possible License(s): MPL-2.0-no-copyleft-exception, BSD-3-Clause, LGPL-2.0, LGPL-2.1, BSD-2-Clause, 0BSD, JSON, AGPL-1.0, GPL-2.0
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- /*-
- * ------+---------+---------+-------- + --------+---------+---------+---------*
- * This file includes significant modifications done by:
- * Copyright (c) 2003, 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * ------+---------+---------+-------- + --------+---------+---------+---------*
- */
- /*
- * This file contains changes from the Open Software Foundation.
- */
- /*
- * Copyright 1988, 1989 by the Massachusetts Institute of Technology
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
- * used in advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission. M.I.T. and the M.I.T.
- * S.I.P.B. make no representations about the suitability of this software
- * for any purpose. It is provided "as is" without express or implied
- * warranty.
- *
- */
- /*
- * newsyslog - roll over selected logs at the appropriate time, keeping the a
- * specified number of backup files around.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #define OSF
- #include <sys/param.h>
- #include <sys/queue.h>
- #include <sys/stat.h>
- #include <sys/wait.h>
- #include <assert.h>
- #include <ctype.h>
- #include <err.h>
- #include <errno.h>
- #include <dirent.h>
- #include <fcntl.h>
- #include <fnmatch.h>
- #include <glob.h>
- #include <grp.h>
- #include <paths.h>
- #include <pwd.h>
- #include <signal.h>
- #include <stdio.h>
- #include <libgen.h>
- #include <stdlib.h>
- #include <string.h>
- #include <time.h>
- #include <unistd.h>
- #include "pathnames.h"
- #include "extern.h"
- /*
- * Compression suffixes
- */
- #ifndef COMPRESS_SUFFIX_GZ
- #define COMPRESS_SUFFIX_GZ ".gz"
- #endif
- #ifndef COMPRESS_SUFFIX_BZ2
- #define COMPRESS_SUFFIX_BZ2 ".bz2"
- #endif
- #ifndef COMPRESS_SUFFIX_XZ
- #define COMPRESS_SUFFIX_XZ ".xz"
- #endif
- #define COMPRESS_SUFFIX_MAXLEN MAX(MAX(sizeof(COMPRESS_SUFFIX_GZ),sizeof(COMPRESS_SUFFIX_BZ2)),sizeof(COMPRESS_SUFFIX_XZ))
- /*
- * Compression types
- */
- #define COMPRESS_TYPES 4 /* Number of supported compression types */
- #define COMPRESS_NONE 0
- #define COMPRESS_GZIP 1
- #define COMPRESS_BZIP2 2
- #define COMPRESS_XZ 3
- /*
- * Bit-values for the 'flags' parsed from a config-file entry.
- */
- #define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */
- /* messages to logfile(s) when rotating. */
- #define CE_NOSIGNAL 0x0010 /* There is no process to signal when */
- /* trimming this file. */
- #define CE_TRIMAT 0x0020 /* trim file at a specific time. */
- #define CE_GLOB 0x0040 /* name of the log is file name pattern. */
- #define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */
- /* process when trimming this file. */
- #define CE_CREATE 0x0100 /* Create the log file if it does not exist. */
- #define CE_NODUMP 0x0200 /* Set 'nodump' on newly created log file. */
- #define CE_PID2CMD 0x0400 /* Replace PID file with a shell command.*/
- #define MIN_PID 5 /* Don't touch pids lower than this */
- #define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */
- #define kbytes(size) (((size) + 1023) >> 10)
- #define DEFAULT_MARKER "<default>"
- #define DEBUG_MARKER "<debug>"
- #define INCLUDE_MARKER "<include>"
- #define DEFAULT_TIMEFNAME_FMT "%Y%m%dT%H%M%S"
- #define MAX_OLDLOGS 65536 /* Default maximum number of old logfiles */
- struct compress_types {
- const char *flag; /* Flag in configuration file */
- const char *suffix; /* Compression suffix */
- const char *path; /* Path to compression program */
- };
- const struct compress_types compress_type[COMPRESS_TYPES] = {
- { "", "", "" }, /* no compression */
- { "Z", COMPRESS_SUFFIX_GZ, _PATH_GZIP }, /* gzip compression */
- { "J", COMPRESS_SUFFIX_BZ2, _PATH_BZIP2 }, /* bzip2 compression */
- { "X", COMPRESS_SUFFIX_XZ, _PATH_XZ } /* xz compression */
- };
- struct conf_entry {
- STAILQ_ENTRY(conf_entry) cf_nextp;
- char *log; /* Name of the log */
- char *pid_cmd_file; /* PID or command file */
- char *r_reason; /* The reason this file is being rotated */
- int firstcreate; /* Creating log for the first time (-C). */
- int rotate; /* Non-zero if this file should be rotated */
- int fsize; /* size found for the log file */
- uid_t uid; /* Owner of log */
- gid_t gid; /* Group of log */
- int numlogs; /* Number of logs to keep */
- int trsize; /* Size cutoff to trigger trimming the log */
- int hours; /* Hours between log trimming */
- struct ptime_data *trim_at; /* Specific time to do trimming */
- unsigned int permissions; /* File permissions on the log */
- int flags; /* CE_BINARY */
- int compress; /* Compression */
- int sig; /* Signal to send */
- int def_cfg; /* Using the <default> rule for this file */
- };
- struct sigwork_entry {
- SLIST_ENTRY(sigwork_entry) sw_nextp;
- int sw_signum; /* the signal to send */
- int sw_pidok; /* true if pid value is valid */
- pid_t sw_pid; /* the process id from the PID file */
- const char *sw_pidtype; /* "daemon" or "process group" */
- int run_cmd; /* run command or send PID to signal */
- char sw_fname[1]; /* file the PID was read from or shell cmd */
- };
- struct zipwork_entry {
- SLIST_ENTRY(zipwork_entry) zw_nextp;
- const struct conf_entry *zw_conf; /* for chown/perm/flag info */
- const struct sigwork_entry *zw_swork; /* to know success of signal */
- int zw_fsize; /* size of the file to compress */
- char zw_fname[1]; /* the file to compress */
- };
- struct include_entry {
- STAILQ_ENTRY(include_entry) inc_nextp;
- const char *file; /* Name of file to process */
- };
- struct oldlog_entry {
- char *fname; /* Filename of the log file */
- time_t t; /* Parsed timestamp of the logfile */
- };
- typedef enum {
- FREE_ENT, KEEP_ENT
- } fk_entry;
- STAILQ_HEAD(cflist, conf_entry);
- SLIST_HEAD(swlisthead, sigwork_entry) swhead = SLIST_HEAD_INITIALIZER(swhead);
- SLIST_HEAD(zwlisthead, zipwork_entry) zwhead = SLIST_HEAD_INITIALIZER(zwhead);
- STAILQ_HEAD(ilist, include_entry);
- int dbg_at_times; /* -D Show details of 'trim_at' code */
- int archtodir = 0; /* Archive old logfiles to other directory */
- int createlogs; /* Create (non-GLOB) logfiles which do not */
- /* already exist. 1=='for entries with */
- /* C flag', 2=='for all entries'. */
- int verbose = 0; /* Print out what's going on */
- int needroot = 1; /* Root privs are necessary */
- int noaction = 0; /* Don't do anything, just show it */
- int norotate = 0; /* Don't rotate */
- int nosignal; /* Do not send any signals */
- int enforcepid = 0; /* If PID file does not exist or empty, do nothing */
- int force = 0; /* Force the trim no matter what */
- int rotatereq = 0; /* -R = Always rotate the file(s) as given */
- /* on the command (this also requires */
- /* that a list of files *are* given on */
- /* the run command). */
- char *requestor; /* The name given on a -R request */
- char *timefnamefmt = NULL; /* Use time based filenames instead of .0 etc */
- char *archdirname; /* Directory path to old logfiles archive */
- char *destdir = NULL; /* Directory to treat at root for logs */
- const char *conf; /* Configuration file to use */
- struct ptime_data *dbg_timenow; /* A "timenow" value set via -D option */
- struct ptime_data *timenow; /* The time to use for checking at-fields */
- #define DAYTIME_LEN 16
- char daytime[DAYTIME_LEN]; /* The current time in human readable form,
- * used for rotation-tracking messages. */
- char hostname[MAXHOSTNAMELEN]; /* hostname */
- const char *path_syslogpid = _PATH_SYSLOGPID;
- static struct cflist *get_worklist(char **files);
- static void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
- struct conf_entry *defconf_p, struct ilist *inclist);
- static void add_to_queue(const char *fname, struct ilist *inclist);
- static char *sob(char *p);
- static char *son(char *p);
- static int isnumberstr(const char *);
- static int isglobstr(const char *);
- static char *missing_field(char *p, char *errline);
- static void change_attrs(const char *, const struct conf_entry *);
- static const char *get_logfile_suffix(const char *logfile);
- static fk_entry do_entry(struct conf_entry *);
- static fk_entry do_rotate(const struct conf_entry *);
- static void do_sigwork(struct sigwork_entry *);
- static void do_zipwork(struct zipwork_entry *);
- static struct sigwork_entry *
- save_sigwork(const struct conf_entry *);
- static struct zipwork_entry *
- save_zipwork(const struct conf_entry *, const struct
- sigwork_entry *, int, const char *);
- static void set_swpid(struct sigwork_entry *, const struct conf_entry *);
- static int sizefile(const char *);
- static void expand_globs(struct cflist *work_p, struct cflist *glob_p);
- static void free_clist(struct cflist *list);
- static void free_entry(struct conf_entry *ent);
- static struct conf_entry *init_entry(const char *fname,
- struct conf_entry *src_entry);
- static void parse_args(int argc, char **argv);
- static int parse_doption(const char *doption);
- static void usage(void);
- static int log_trim(const char *logname, const struct conf_entry *log_ent);
- static int age_old_log(char *file);
- static void savelog(char *from, char *to);
- static void createdir(const struct conf_entry *ent, char *dirpart);
- static void createlog(const struct conf_entry *ent);
- /*
- * All the following take a parameter of 'int', but expect values in the
- * range of unsigned char. Define wrappers which take values of type 'char',
- * whether signed or unsigned, and ensure they end up in the right range.
- */
- #define isdigitch(Anychar) isdigit((u_char)(Anychar))
- #define isprintch(Anychar) isprint((u_char)(Anychar))
- #define isspacech(Anychar) isspace((u_char)(Anychar))
- #define tolowerch(Anychar) tolower((u_char)(Anychar))
- int
- main(int argc, char **argv)
- {
- struct cflist *worklist;
- struct conf_entry *p;
- struct sigwork_entry *stmp;
- struct zipwork_entry *ztmp;
- SLIST_INIT(&swhead);
- SLIST_INIT(&zwhead);
- parse_args(argc, argv);
- argc -= optind;
- argv += optind;
- if (needroot && getuid() && geteuid())
- errx(1, "must have root privs");
- worklist = get_worklist(argv);
- /*
- * Rotate all the files which need to be rotated. Note that
- * some users have *hundreds* of entries in newsyslog.conf!
- */
- while (!STAILQ_EMPTY(worklist)) {
- p = STAILQ_FIRST(worklist);
- STAILQ_REMOVE_HEAD(worklist, cf_nextp);
- if (do_entry(p) == FREE_ENT)
- free_entry(p);
- }
- /*
- * Send signals to any processes which need a signal to tell
- * them to close and re-open the log file(s) we have rotated.
- * Note that zipwork_entries include pointers to these
- * sigwork_entry's, so we can not free the entries here.
- */
- if (!SLIST_EMPTY(&swhead)) {
- if (noaction || verbose)
- printf("Signal all daemon process(es)...\n");
- SLIST_FOREACH(stmp, &swhead, sw_nextp)
- do_sigwork(stmp);
- if (noaction)
- printf("\tsleep 10\n");
- else {
- if (verbose)
- printf("Pause 10 seconds to allow daemon(s)"
- " to close log file(s)\n");
- sleep(10);
- }
- }
- /*
- * Compress all files that we're expected to compress, now
- * that all processes should have closed the files which
- * have been rotated.
- */
- if (!SLIST_EMPTY(&zwhead)) {
- if (noaction || verbose)
- printf("Compress all rotated log file(s)...\n");
- while (!SLIST_EMPTY(&zwhead)) {
- ztmp = SLIST_FIRST(&zwhead);
- do_zipwork(ztmp);
- SLIST_REMOVE_HEAD(&zwhead, zw_nextp);
- free(ztmp);
- }
- }
- /* Now free all the sigwork entries. */
- while (!SLIST_EMPTY(&swhead)) {
- stmp = SLIST_FIRST(&swhead);
- SLIST_REMOVE_HEAD(&swhead, sw_nextp);
- free(stmp);
- }
- while (wait(NULL) > 0 || errno == EINTR)
- ;
- return (0);
- }
- static struct conf_entry *
- init_entry(const char *fname, struct conf_entry *src_entry)
- {
- struct conf_entry *tempwork;
- if (verbose > 4)
- printf("\t--> [creating entry for %s]\n", fname);
- tempwork = malloc(sizeof(struct conf_entry));
- if (tempwork == NULL)
- err(1, "malloc of conf_entry for %s", fname);
- if (destdir == NULL || fname[0] != '/')
- tempwork->log = strdup(fname);
- else
- asprintf(&tempwork->log, "%s%s", destdir, fname);
- if (tempwork->log == NULL)
- err(1, "strdup for %s", fname);
- if (src_entry != NULL) {
- tempwork->pid_cmd_file = NULL;
- if (src_entry->pid_cmd_file)
- tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file);
- tempwork->r_reason = NULL;
- tempwork->firstcreate = 0;
- tempwork->rotate = 0;
- tempwork->fsize = -1;
- tempwork->uid = src_entry->uid;
- tempwork->gid = src_entry->gid;
- tempwork->numlogs = src_entry->numlogs;
- tempwork->trsize = src_entry->trsize;
- tempwork->hours = src_entry->hours;
- tempwork->trim_at = NULL;
- if (src_entry->trim_at != NULL)
- tempwork->trim_at = ptime_init(src_entry->trim_at);
- tempwork->permissions = src_entry->permissions;
- tempwork->flags = src_entry->flags;
- tempwork->compress = src_entry->compress;
- tempwork->sig = src_entry->sig;
- tempwork->def_cfg = src_entry->def_cfg;
- } else {
- /* Initialize as a "do-nothing" entry */
- tempwork->pid_cmd_file = NULL;
- tempwork->r_reason = NULL;
- tempwork->firstcreate = 0;
- tempwork->rotate = 0;
- tempwork->fsize = -1;
- tempwork->uid = (uid_t)-1;
- tempwork->gid = (gid_t)-1;
- tempwork->numlogs = 1;
- tempwork->trsize = -1;
- tempwork->hours = -1;
- tempwork->trim_at = NULL;
- tempwork->permissions = 0;
- tempwork->flags = 0;
- tempwork->compress = COMPRESS_NONE;
- tempwork->sig = SIGHUP;
- tempwork->def_cfg = 0;
- }
- return (tempwork);
- }
- static void
- free_entry(struct conf_entry *ent)
- {
- if (ent == NULL)
- return;
- if (ent->log != NULL) {
- if (verbose > 4)
- printf("\t--> [freeing entry for %s]\n", ent->log);
- free(ent->log);
- ent->log = NULL;
- }
- if (ent->pid_cmd_file != NULL) {
- free(ent->pid_cmd_file);
- ent->pid_cmd_file = NULL;
- }
- if (ent->r_reason != NULL) {
- free(ent->r_reason);
- ent->r_reason = NULL;
- }
- if (ent->trim_at != NULL) {
- ptime_free(ent->trim_at);
- ent->trim_at = NULL;
- }
- free(ent);
- }
- static void
- free_clist(struct cflist *list)
- {
- struct conf_entry *ent;
- while (!STAILQ_EMPTY(list)) {
- ent = STAILQ_FIRST(list);
- STAILQ_REMOVE_HEAD(list, cf_nextp);
- free_entry(ent);
- }
- free(list);
- list = NULL;
- }
- static fk_entry
- do_entry(struct conf_entry * ent)
- {
- #define REASON_MAX 80
- int modtime;
- fk_entry free_or_keep;
- double diffsecs;
- char temp_reason[REASON_MAX];
- int oversized;
- free_or_keep = FREE_ENT;
- if (verbose)
- printf("%s <%d%s>: ", ent->log, ent->numlogs,
- compress_type[ent->compress].flag);
- ent->fsize = sizefile(ent->log);
- oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize));
- modtime = age_old_log(ent->log);
- ent->rotate = 0;
- ent->firstcreate = 0;
- if (ent->fsize < 0) {
- /*
- * If either the C flag or the -C option was specified,
- * and if we won't be creating the file, then have the
- * verbose message include a hint as to why the file
- * will not be created.
- */
- temp_reason[0] = '\0';
- if (createlogs > 1)
- ent->firstcreate = 1;
- else if ((ent->flags & CE_CREATE) && createlogs)
- ent->firstcreate = 1;
- else if (ent->flags & CE_CREATE)
- strlcpy(temp_reason, " (no -C option)", REASON_MAX);
- else if (createlogs)
- strlcpy(temp_reason, " (no C flag)", REASON_MAX);
- if (ent->firstcreate) {
- if (verbose)
- printf("does not exist -> will create.\n");
- createlog(ent);
- } else if (verbose) {
- printf("does not exist, skipped%s.\n", temp_reason);
- }
- } else {
- if (ent->flags & CE_TRIMAT && !force && !rotatereq &&
- !oversized) {
- diffsecs = ptimeget_diff(timenow, ent->trim_at);
- if (diffsecs < 0.0) {
- /* trim_at is some time in the future. */
- if (verbose) {
- ptime_adjust4dst(ent->trim_at,
- timenow);
- printf("--> will trim at %s",
- ptimeget_ctime(ent->trim_at));
- }
- return (free_or_keep);
- } else if (diffsecs >= 3600.0) {
- /*
- * trim_at is more than an hour in the past,
- * so find the next valid trim_at time, and
- * tell the user what that will be.
- */
- if (verbose && dbg_at_times)
- printf("\n\t--> prev trim at %s\t",
- ptimeget_ctime(ent->trim_at));
- if (verbose) {
- ptimeset_nxtime(ent->trim_at);
- printf("--> will trim at %s",
- ptimeget_ctime(ent->trim_at));
- }
- return (free_or_keep);
- } else if (verbose && noaction && dbg_at_times) {
- /*
- * If we are just debugging at-times, then
- * a detailed message is helpful. Also
- * skip "doing" any commands, since they
- * would all be turned off by no-action.
- */
- printf("\n\t--> timematch at %s",
- ptimeget_ctime(ent->trim_at));
- return (free_or_keep);
- } else if (verbose && ent->hours <= 0) {
- printf("--> time is up\n");
- }
- }
- if (verbose && (ent->trsize > 0))
- printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize);
- if (verbose && (ent->hours > 0))
- printf(" age (hr): %d [%d] ", modtime, ent->hours);
- /*
- * Figure out if this logfile needs to be rotated.
- */
- temp_reason[0] = '\0';
- if (rotatereq) {
- ent->rotate = 1;
- snprintf(temp_reason, REASON_MAX, " due to -R from %s",
- requestor);
- } else if (force) {
- ent->rotate = 1;
- snprintf(temp_reason, REASON_MAX, " due to -F request");
- } else if (oversized) {
- ent->rotate = 1;
- snprintf(temp_reason, REASON_MAX, " due to size>%dK",
- ent->trsize);
- } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) {
- ent->rotate = 1;
- } else if ((ent->hours > 0) && ((modtime >= ent->hours) ||
- (modtime < 0))) {
- ent->rotate = 1;
- }
- /*
- * If the file needs to be rotated, then rotate it.
- */
- if (ent->rotate && !norotate) {
- if (temp_reason[0] != '\0')
- ent->r_reason = strdup(temp_reason);
- if (verbose)
- printf("--> trimming log....\n");
- if (noaction && !verbose)
- printf("%s <%d%s>: trimming\n", ent->log,
- ent->numlogs,
- compress_type[ent->compress].flag);
- free_or_keep = do_rotate(ent);
- } else {
- if (verbose)
- printf("--> skipping\n");
- }
- }
- return (free_or_keep);
- #undef REASON_MAX
- }
- static void
- parse_args(int argc, char **argv)
- {
- int ch;
- char *p;
- timenow = ptime_init(NULL);
- ptimeset_time(timenow, time(NULL));
- strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN);
- /* Let's get our hostname */
- (void)gethostname(hostname, sizeof(hostname));
- /* Truncate domain */
- if ((p = strchr(hostname, '.')) != NULL)
- *p = '\0';
- /* Parse command line options. */
- while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1)
- switch (ch) {
- case 'a':
- archtodir++;
- archdirname = optarg;
- break;
- case 'd':
- destdir = optarg;
- break;
- case 'f':
- conf = optarg;
- break;
- case 'n':
- noaction++;
- break;
- case 'r':
- needroot = 0;
- break;
- case 's':
- nosignal = 1;
- break;
- case 't':
- if (optarg[0] == '\0' ||
- strcmp(optarg, "DEFAULT") == 0)
- timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT);
- else
- timefnamefmt = strdup(optarg);
- break;
- case 'v':
- verbose++;
- break;
- case 'C':
- /* Useful for things like rc.diskless... */
- createlogs++;
- break;
- case 'D':
- /*
- * Set some debugging option. The specific option
- * depends on the value of optarg. These options
- * may come and go without notice or documentation.
- */
- if (parse_doption(optarg))
- break;
- usage();
- /* NOTREACHED */
- case 'F':
- force++;
- break;
- case 'N':
- norotate++;
- break;
- case 'P':
- enforcepid++;
- break;
- case 'R':
- rotatereq++;
- requestor = strdup(optarg);
- break;
- case 'S':
- path_syslogpid = optarg;
- break;
- case 'm': /* Used by OpenBSD for "monitor mode" */
- default:
- usage();
- /* NOTREACHED */
- }
- if (force && norotate) {
- warnx("Only one of -F and -N may be specified.");
- usage();
- /* NOTREACHED */
- }
- if (rotatereq) {
- if (optind == argc) {
- warnx("At least one filename must be given when -R is specified.");
- usage();
- /* NOTREACHED */
- }
- /* Make sure "requestor" value is safe for a syslog message. */
- for (p = requestor; *p != '\0'; p++) {
- if (!isprintch(*p) && (*p != '\t'))
- *p = '.';
- }
- }
- if (dbg_timenow) {
- /*
- * Note that the 'daytime' variable is not changed.
- * That is only used in messages that track when a
- * logfile is rotated, and if a file *is* rotated,
- * then it will still rotated at the "real now" time.
- */
- ptime_free(timenow);
- timenow = dbg_timenow;
- fprintf(stderr, "Debug: Running as if TimeNow is %s",
- ptimeget_ctime(dbg_timenow));
- }
- }
- /*
- * These debugging options are mainly meant for developer use, such
- * as writing regression-tests. They would not be needed by users
- * during normal operation of newsyslog...
- */
- static int
- parse_doption(const char *doption)
- {
- const char TN[] = "TN=";
- int res;
- if (strncmp(doption, TN, sizeof(TN) - 1) == 0) {
- /*
- * The "TimeNow" debugging option. This might be off
- * by an hour when crossing a timezone change.
- */
- dbg_timenow = ptime_init(NULL);
- res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601,
- time(NULL), doption + sizeof(TN) - 1);
- if (res == -2) {
- warnx("Non-existent time specified on -D %s", doption);
- return (0); /* failure */
- } else if (res < 0) {
- warnx("Malformed time given on -D %s", doption);
- return (0); /* failure */
- }
- return (1); /* successfully parsed */
- }
- if (strcmp(doption, "ats") == 0) {
- dbg_at_times++;
- return (1); /* successfully parsed */
- }
- /* XXX - This check could probably be dropped. */
- if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder")
- == 0)) {
- warnx("NOTE: newsyslog always uses 'neworder'.");
- return (1); /* successfully parsed */
- }
- warnx("Unknown -D (debug) option: '%s'", doption);
- return (0); /* failure */
- }
- static void
- usage(void)
- {
- fprintf(stderr,
- "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n"
- " [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n");
- exit(1);
- }
- /*
- * Parse a configuration file and return a linked list of all the logs
- * which should be processed.
- */
- static struct cflist *
- get_worklist(char **files)
- {
- FILE *f;
- char **given;
- struct cflist *cmdlist, *filelist, *globlist;
- struct conf_entry *defconf, *dupent, *ent;
- struct ilist inclist;
- struct include_entry *inc;
- int gmatch, fnres;
- defconf = NULL;
- STAILQ_INIT(&inclist);
- filelist = malloc(sizeof(struct cflist));
- if (filelist == NULL)
- err(1, "malloc of filelist");
- STAILQ_INIT(filelist);
- globlist = malloc(sizeof(struct cflist));
- if (globlist == NULL)
- err(1, "malloc of globlist");
- STAILQ_INIT(globlist);
- inc = malloc(sizeof(struct include_entry));
- if (inc == NULL)
- err(1, "malloc of inc");
- inc->file = conf;
- if (inc->file == NULL)
- inc->file = _PATH_CONF;
- STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp);
- STAILQ_FOREACH(inc, &inclist, inc_nextp) {
- if (strcmp(inc->file, "-") != 0)
- f = fopen(inc->file, "r");
- else {
- f = stdin;
- inc->file = "<stdin>";
- }
- if (!f)
- err(1, "%s", inc->file);
- if (verbose)
- printf("Processing %s\n", inc->file);
- parse_file(f, filelist, globlist, defconf, &inclist);
- (void) fclose(f);
- }
- /*
- * All config-file information has been read in and turned into
- * a filelist and a globlist. If there were no specific files
- * given on the run command, then the only thing left to do is to
- * call a routine which finds all files matched by the globlist
- * and adds them to the filelist. Then return the worklist.
- */
- if (*files == NULL) {
- expand_globs(filelist, globlist);
- free_clist(globlist);
- if (defconf != NULL)
- free_entry(defconf);
- return (filelist);
- /* NOTREACHED */
- }
- /*
- * If newsyslog was given a specific list of files to process,
- * it may be that some of those files were not listed in any
- * config file. Those unlisted files should get the default
- * rotation action. First, create the default-rotation action
- * if none was found in a system config file.
- */
- if (defconf == NULL) {
- defconf = init_entry(DEFAULT_MARKER, NULL);
- defconf->numlogs = 3;
- defconf->trsize = 50;
- defconf->permissions = S_IRUSR|S_IWUSR;
- }
- /*
- * If newsyslog was run with a list of specific filenames,
- * then create a new worklist which has only those files in
- * it, picking up the rotation-rules for those files from
- * the original filelist.
- *
- * XXX - Note that this will copy multiple rules for a single
- * logfile, if multiple entries are an exact match for
- * that file. That matches the historic behavior, but do
- * we want to continue to allow it? If so, it should
- * probably be handled more intelligently.
- */
- cmdlist = malloc(sizeof(struct cflist));
- if (cmdlist == NULL)
- err(1, "malloc of cmdlist");
- STAILQ_INIT(cmdlist);
- for (given = files; *given; ++given) {
- /*
- * First try to find exact-matches for this given file.
- */
- gmatch = 0;
- STAILQ_FOREACH(ent, filelist, cf_nextp) {
- if (strcmp(ent->log, *given) == 0) {
- gmatch++;
- dupent = init_entry(*given, ent);
- STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
- }
- }
- if (gmatch) {
- if (verbose > 2)
- printf("\t+ Matched entry %s\n", *given);
- continue;
- }
- /*
- * There was no exact-match for this given file, so look
- * for a "glob" entry which does match.
- */
- gmatch = 0;
- if (verbose > 2 && globlist != NULL)
- printf("\t+ Checking globs for %s\n", *given);
- STAILQ_FOREACH(ent, globlist, cf_nextp) {
- fnres = fnmatch(ent->log, *given, FNM_PATHNAME);
- if (verbose > 2)
- printf("\t+ = %d for pattern %s\n", fnres,
- ent->log);
- if (fnres == 0) {
- gmatch++;
- dupent = init_entry(*given, ent);
- /* This new entry is not a glob! */
- dupent->flags &= ~CE_GLOB;
- STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
- /* Only allow a match to one glob-entry */
- break;
- }
- }
- if (gmatch) {
- if (verbose > 2)
- printf("\t+ Matched %s via %s\n", *given,
- ent->log);
- continue;
- }
- /*
- * This given file was not found in any config file, so
- * add a worklist item based on the default entry.
- */
- if (verbose > 2)
- printf("\t+ No entry matched %s (will use %s)\n",
- *given, DEFAULT_MARKER);
- dupent = init_entry(*given, defconf);
- /* Mark that it was *not* found in a config file */
- dupent->def_cfg = 1;
- STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
- }
- /*
- * Free all the entries in the original work list, the list of
- * glob entries, and the default entry.
- */
- free_clist(filelist);
- free_clist(globlist);
- free_entry(defconf);
- /* And finally, return a worklist which matches the given files. */
- return (cmdlist);
- }
- /*
- * Expand the list of entries with filename patterns, and add all files
- * which match those glob-entries onto the worklist.
- */
- static void
- expand_globs(struct cflist *work_p, struct cflist *glob_p)
- {
- int gmatch, gres;
- size_t i;
- char *mfname;
- struct conf_entry *dupent, *ent, *globent;
- glob_t pglob;
- struct stat st_fm;
- /*
- * The worklist contains all fully-specified (non-GLOB) names.
- *
- * Now expand the list of filename-pattern (GLOB) entries into
- * a second list, which (by definition) will only match files
- * that already exist. Do not add a glob-related entry for any
- * file which already exists in the fully-specified list.
- */
- STAILQ_FOREACH(globent, glob_p, cf_nextp) {
- gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob);
- if (gres != 0) {
- warn("cannot expand pattern (%d): %s", gres,
- globent->log);
- continue;
- }
- if (verbose > 2)
- printf("\t+ Expanding pattern %s\n", globent->log);
- for (i = 0; i < pglob.gl_matchc; i++) {
- mfname = pglob.gl_pathv[i];
- /* See if this file already has a specific entry. */
- gmatch = 0;
- STAILQ_FOREACH(ent, work_p, cf_nextp) {
- if (strcmp(mfname, ent->log) == 0) {
- gmatch++;
- break;
- }
- }
- if (gmatch)
- continue;
- /* Make sure the named matched is a file. */
- gres = lstat(mfname, &st_fm);
- if (gres != 0) {
- /* Error on a file that glob() matched?!? */
- warn("Skipping %s - lstat() error", mfname);
- continue;
- }
- if (!S_ISREG(st_fm.st_mode)) {
- /* We only rotate files! */
- if (verbose > 2)
- printf("\t+ . skipping %s (!file)\n",
- mfname);
- continue;
- }
- if (verbose > 2)
- printf("\t+ . add file %s\n", mfname);
- dupent = init_entry(mfname, globent);
- /* This new entry is not a glob! */
- dupent->flags &= ~CE_GLOB;
- /* Add to the worklist. */
- STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp);
- }
- globfree(&pglob);
- if (verbose > 2)
- printf("\t+ Done with pattern %s\n", globent->log);
- }
- }
- /*
- * Parse a configuration file and update a linked list of all the logs to
- * process.
- */
- static void
- parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
- struct conf_entry *defconf_p, struct ilist *inclist)
- {
- char line[BUFSIZ], *parse, *q;
- char *cp, *errline, *group;
- struct conf_entry *working;
- struct passwd *pwd;
- struct group *grp;
- glob_t pglob;
- int eol, ptm_opts, res, special;
- size_t i;
- errline = NULL;
- while (fgets(line, BUFSIZ, cf)) {
- if ((line[0] == '\n') || (line[0] == '#') ||
- (strlen(line) == 0))
- continue;
- if (errline != NULL)
- free(errline);
- errline = strdup(line);
- for (cp = line + 1; *cp != '\0'; cp++) {
- if (*cp != '#')
- continue;
- if (*(cp - 1) == '\\') {
- strcpy(cp - 1, cp);
- cp--;
- continue;
- }
- *cp = '\0';
- break;
- }
- q = parse = missing_field(sob(line), errline);
- parse = son(line);
- if (!*parse)
- errx(1, "malformed line (missing fields):\n%s",
- errline);
- *parse = '\0';
- /*
- * Allow people to set debug options via the config file.
- * (NOTE: debug options are undocumented, and may disappear
- * at any time, etc).
- */
- if (strcasecmp(DEBUG_MARKER, q) == 0) {
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse)
- warnx("debug line specifies no option:\n%s",
- errline);
- else {
- *parse = '\0';
- parse_doption(q);
- }
- continue;
- } else if (strcasecmp(INCLUDE_MARKER, q) == 0) {
- if (verbose)
- printf("Found: %s", errline);
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse) {
- warnx("include line missing argument:\n%s",
- errline);
- continue;
- }
- *parse = '\0';
- if (isglobstr(q)) {
- res = glob(q, GLOB_NOCHECK, NULL, &pglob);
- if (res != 0) {
- warn("cannot expand pattern (%d): %s",
- res, q);
- continue;
- }
- if (verbose > 2)
- printf("\t+ Expanding pattern %s\n", q);
- for (i = 0; i < pglob.gl_matchc; i++)
- add_to_queue(pglob.gl_pathv[i],
- inclist);
- globfree(&pglob);
- } else
- add_to_queue(q, inclist);
- continue;
- }
- special = 0;
- working = init_entry(q, NULL);
- if (strcasecmp(DEFAULT_MARKER, q) == 0) {
- special = 1;
- if (defconf_p != NULL) {
- warnx("Ignoring duplicate entry for %s!", q);
- free_entry(working);
- continue;
- }
- defconf_p = working;
- }
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse)
- errx(1, "malformed line (missing fields):\n%s",
- errline);
- *parse = '\0';
- if ((group = strchr(q, ':')) != NULL ||
- (group = strrchr(q, '.')) != NULL) {
- *group++ = '\0';
- if (*q) {
- if (!(isnumberstr(q))) {
- if ((pwd = getpwnam(q)) == NULL)
- errx(1,
- "error in config file; unknown user:\n%s",
- errline);
- working->uid = pwd->pw_uid;
- } else
- working->uid = atoi(q);
- } else
- working->uid = (uid_t)-1;
- q = group;
- if (*q) {
- if (!(isnumberstr(q))) {
- if ((grp = getgrnam(q)) == NULL)
- errx(1,
- "error in config file; unknown group:\n%s",
- errline);
- working->gid = grp->gr_gid;
- } else
- working->gid = atoi(q);
- } else
- working->gid = (gid_t)-1;
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse)
- errx(1, "malformed line (missing fields):\n%s",
- errline);
- *parse = '\0';
- } else {
- working->uid = (uid_t)-1;
- working->gid = (gid_t)-1;
- }
- if (!sscanf(q, "%o", &working->permissions))
- errx(1, "error in config file; bad permissions:\n%s",
- errline);
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse)
- errx(1, "malformed line (missing fields):\n%s",
- errline);
- *parse = '\0';
- if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0)
- errx(1, "error in config file; bad value for count of logs to save:\n%s",
- errline);
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- if (!*parse)
- errx(1, "malformed line (missing fields):\n%s",
- errline);
- *parse = '\0';
- if (isdigitch(*q))
- working->trsize = atoi(q);
- else if (strcmp(q, "*") == 0)
- working->trsize = -1;
- else {
- warnx("Invalid value of '%s' for 'size' in line:\n%s",
- q, errline);
- working->trsize = -1;
- }
- working->flags = 0;
- working->compress = COMPRESS_NONE;
- q = parse = missing_field(sob(++parse), errline);
- parse = son(parse);
- eol = !*parse;
- *parse = '\0';
- {
- char *ep;
- u_long ul;
- ul = strtoul(q, &ep, 10);
- if (ep == q)
- working->hours = 0;
- else if (*ep == '*')
- working->hours = -1;
- else if (ul > INT_MAX)
- errx(1, "interval is too large:\n%s", errline);
- else
- working->hours = ul;
- if (*ep == '\0' || strcmp(ep, "*") == 0)
- goto no_trimat;
- if (*ep != '@' && *ep != '$')
- errx(1, "malformed interval/at:\n%s", errline);
- working->flags |= CE_TRIMAT;
- working->trim_at = ptime_init(NULL);
- ptm_opts = PTM_PARSE_ISO8601;
- if (*ep == '$')
- ptm_opts = PTM_PARSE_DWM;
- ptm_opts |= PTM_PARSE_MATCHDOM;
- res = ptime_relparse(working->trim_at, ptm_opts,
- ptimeget_secs(timenow), ep + 1);
- if (res == -2)
- errx(1, "nonexistent time for 'at' value:\n%s",
- errline);
- else if (res < 0)
- errx(1, "malformed 'at' value:\n%s", errline);
- }
- no_trimat:
- if (eol)
- q = NULL;
- else {
- q = parse = sob(++parse); /* Optional field */
- parse = son(parse);
- if (!*parse)
- eol = 1;
- *parse = '\0';
- }
- for (; q && *q && !isspacech(*q); q++) {
- switch (tolowerch(*q)) {
- case 'b':
- working->flags |= CE_BINARY;
- break;
- case 'c':
- /*
- * XXX - Ick! Ugly! Remove ASAP!
- * We want `c' and `C' for "create". But we
- * will temporarily treat `c' as `g', because
- * FreeBSD releases <= 4.8 have a typo of
- * checking ('G' || 'c') for CE_GLOB.
- */
- if (*q == 'c') {
- warnx("Assuming 'g' for 'c' in flags for line:\n%s",
- errline);
- warnx("The 'c' flag will eventually mean 'CREATE'");
- working->flags |= CE_GLOB;
- break;
- }
- working->flags |= CE_CREATE;
- break;
- case 'd':
- working->flags |= CE_NODUMP;
- break;
- case 'g':
- working->flags |= CE_GLOB;
- break;
- case 'j':
- working->compress = COMPRESS_BZIP2;
- break;
- case 'n':
- working->flags |= CE_NOSIGNAL;
- break;
- case 'r':
- working->flags |= CE_PID2CMD;
- break;
- case 'u':
- working->flags |= CE_SIGNALGROUP;
- break;
- case 'w':
- /* Depreciated flag - keep for compatibility purposes */
- break;
- case 'x':
- working->compress = COMPRESS_XZ;
- break;
- case 'z':
- working->compress = COMPRESS_GZIP;
- break;
- case '-':
- break;
- case 'f': /* Used by OpenBSD for "CE_FOLLOW" */
- case 'm': /* Used by OpenBSD for "CE_MONITOR" */
- case 'p': /* Used by NetBSD for "CE_PLAIN0" */
- default:
- errx(1, "illegal flag in config file -- %c",
- *q);
- }
- }
- if (eol)
- q = NULL;
- else {
- q = parse = sob(++parse); /* Optional field */
- parse = son(parse);
- if (!*parse)
- eol = 1;
- *parse = '\0';
- }
- working->pid_cmd_file = NULL;
- if (q && *q) {
- if (*q == '/')
- working->pid_cmd_file = strdup(q);
- else if (isdigit(*q))
- goto got_sig;
- else
- errx(1,
- "illegal pid file or signal number in config file:\n%s",
- errline);
- }
- if (eol)
- q = NULL;
- else {
- q = parse = sob(++parse); /* Optional field */
- *(parse = son(parse)) = '\0';
- }
- working->sig = SIGHUP;
- if (q && *q) {
- if (isdigit(*q)) {
- got_sig:
- working->sig = atoi(q);
- } else {
- err_sig:
- errx(1,
- "illegal signal number in config file:\n%s",
- errline);
- }
- if (working->sig < 1 || working->sig >= NSIG)
- goto err_sig;
- }
- /*
- * Finish figuring out what pid-file to use (if any) in
- * later processing if this logfile needs to be rotated.
- */
- if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) {
- /*
- * This config-entry specified 'n' for nosignal,
- * see if it also specified an explicit pid_cmd_file.
- * This would be a pretty pointless combination.
- */
- if (working->pid_cmd_file != NULL) {
- warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s",
- working->pid_cmd_file, errline);
- free(working->pid_cmd_file);
- working->pid_cmd_file = NULL;
- }
- } else if (working->pid_cmd_file == NULL) {
- /*
- * This entry did not specify the 'n' flag, which
- * means it should signal syslogd unless it had
- * specified some other pid-file (and obviously the
- * syslog pid-file will not be for a process-group).
- * Also, we should only try to notify syslog if we
- * are root.
- */
- if (working->flags & CE_SIGNALGROUP) {
- warnx("Ignoring flag 'U' in line:\n%s",
- errline);
- working->flags &= ~CE_SIGNALGROUP;
- }
- if (needroot)
- working->pid_cmd_file = strdup(path_syslogpid);
- }
- /*
- * Add this entry to the appropriate list of entries, unless
- * it was some kind of special entry (eg: <default>).
- */
- if (special) {
- ; /* Do not add to any list */
- } else if (working->flags & CE_GLOB) {
- STAILQ_INSERT_TAIL(glob_p, working, cf_nextp);
- } else {
- STAILQ_INSERT_TAIL(work_p, working, cf_nextp);
- }
- }
- if (errline != NULL)
- free(errline);
- }
- static char *
- missing_field(char *p, char *errline)
- {
- if (!p || !*p)
- errx(1, "missing field in config file:\n%s", errline);
- return (p);
- }
- /*
- * In our sort we return it in the reverse of what qsort normally
- * would do, as we want the newest files first. If we have two
- * entries with the same time we don't really care about order.
- *
- * Support function for qsort() in delete_oldest_timelog().
- */
- static int
- oldlog_entry_compare(const void *a, const void *b)
- {
- const struct oldlog_entry *ola = a, *olb = b;
- if (ola->t > olb->t)
- return (-1);
- else if (ola->t < olb->t)
- return (1);
- else
- return (0);
- }
- /*
- * Delete the oldest logfiles, when using time based filenames.
- */
- static void
- delete_oldest_timelog(const struct conf_entry *ent, const char *archive_dir)
- {
- char *logfname, *s, *dir, errbuf[80];
- int dir_fd, i, logcnt, max_logcnt, valid;
- struct oldlog_entry *oldlogs;
- size_t logfname_len;
- struct dirent *dp;
- const char *cdir;
- struct tm tm;
- DIR *dirp;
- int c;
- oldlogs = malloc(MAX_OLDLOGS * sizeof(struct oldlog_entry));
- max_logcnt = MAX_OLDLOGS;
- logcnt = 0;
- if (archive_dir != NULL && archive_dir[0] != '\0')
- cdir = archive_dir;
- else
- if ((cdir = dirname(ent->log)) == NULL)
- err(1, "dirname()");
- if ((dir = strdup(cdir)) == NULL)
- err(1, "strdup()");
- if ((s = basename(ent->log)) == NULL)
- err(1, "basename()");
- if ((logfname = strdup(s)) == NULL)
- err(1, "strdup()");
- logfname_len = strlen(logfname);
- if (strcmp(logfname, "/") == 0)
- errx(1, "Invalid log filename - became '/'");
- if (verbose > 2)
- printf("Searching for old logs in %s\n", dir);
- /* First we create a 'list' of all archived logfiles */
- if ((dirp = opendir(dir)) == NULL)
- err(1, "Cannot open log directory '%s'", dir);
- dir_fd = dirfd(dirp);
- while ((dp = readdir(dirp)) != NULL) {
- if (dp->d_type != DT_REG)
- continue;
- /* Ignore everything but files with our logfile prefix */
- if (strncmp(dp->d_name, logfname, logfname_len) != 0)
- continue;
- /* Ignore the actual non-rotated logfile */
- if (dp->d_namlen == logfname_len)
- continue;
- /*
- * Make sure we created have found a logfile, so the
- * postfix is valid, IE format is: '.<time>(.[bg]z)?'.
- */
- if (dp->d_name[logfname_len] != '.') {
- if (verbose)
- printf("Ignoring %s which has unexpected "
- "extension '%s'\n", dp->d_name,
- &dp->d_name[logfname_len]);
- continue;
- }
- if ((s = strptime(&dp->d_name[logfname_len + 1],
- timefnamefmt, &tm)) == NULL) {
- /*
- * We could special case "old" sequentially
- * named logfiles here, but we do not as that
- * would require special handling to decide
- * which one was the oldest compared to "new"
- * time based logfiles.
- */
- if (verbose)
- printf("Ignoring %s which does not "
- "match time format\n", dp->d_name);
- continue;
- }
- for (c = 0; c < COMPRESS_TYPES; c++)
- if (strcmp(s, compress_type[c].suffix) == 0)
- valid = 1;
- if (valid != 1) {
- if (verbose)
- printf("Ignoring %s which has unexpected "
- "extension '%s'\n", dp->d_name, s);
- continue;
- }
- /*
- * We should now have old an old rotated logfile, so
- * add it to the 'list'.
- */
- if ((oldlogs[logcnt].t = timegm(&tm)) == -1)
- err(1, "Could not convert time string to time value");
- if ((oldlogs[logcnt].fname = strdup(dp->d_name)) == NULL)
- err(1, "strdup()");
- logcnt++;
- /*
- * It is very unlikely we ever run out of space in the
- * logfile array from the default size, but lets
- * handle it anyway...
- */
- if (logcnt >= max_logcnt) {
- max_logcnt *= 4;
- /* Detect integer overflow */
- if (max_logcnt < logcnt)
- errx(1, "Too many old logfiles found");
- oldlogs = realloc(oldlogs,
- max_logcnt * sizeof(struct oldlog_entry));
- if (oldlogs == NULL)
- err(1, "realloc()");
- }
- }
- /* Second, if needed we delete oldest archived logfiles */
- if (logcnt > 0 && logcnt >= ent->numlogs && ent->numlogs > 1) {
- oldlogs = realloc(oldlogs, logcnt *
- sizeof(struct oldlog_entry));
- if (oldlogs == NULL)
- err(1, "realloc()");
- /*
- * We now sort the logs in the order of newest to
- * oldest. That way we can simply skip over the
- * number of records we want to keep.
- */
- qsort(oldlogs, logcnt, sizeof(struct oldlog_entry),
- oldlog_entry_compare);
- for (i = ent->numlogs - 1; i < logcnt; i++) {
- if (noaction)
- printf("\trm -f %s/%s\n", dir,
- oldlogs[i].fname);
- else if (unlinkat(dir_fd, oldlogs[i].fname, 0) != 0) {
- snprintf(errbuf, sizeof(errbuf),
- "Could not delet old logfile '%s'",
- oldlogs[i].fname);
- perror(errbuf);
- }
- }
- } else if (verbose > 1)
- printf("No old logs to delete for logfile %s\n", ent->log);
- /* Third, cleanup */
- closedir(dirp);
- for (i = 0; i < logcnt; i++) {
- assert(oldlogs[i].fname != NULL);
- free(oldlogs[i].fname);
- }
- free(oldlogs);
- free(logfname);
- free(dir);
- }
- /*
- * Generate a log filename, when using classic filenames.
- */
- static void
- gen_classiclog_fname(char *fname, size_t fname_sz, const char *archive_dir,
- const char *namepart, int numlogs_c)
- {
- if (archive_dir[0] != '\0')
- (void) snprintf(fname, fname_sz, "%s/%s.%d", archive_dir,
- namepart, numlogs_c);
- else
- (void) snprintf(fname, fname_sz, "%s.%d", namepart, numlogs_c);
- }
- /*
- * Delete a rotated logfile, when using classic filenames.
- */
- static void
- delete_classiclog(const char *archive_dir, const char *namepart, int numlog_c)
- {
- char file1[MAXPATHLEN], zfile1[MAXPATHLEN];
- int c;
- gen_classiclog_fname(file1, sizeof(file1), archive_dir, namepart,
- numlog_c);
- for (c = 0; c < COMPRESS_TYPES; c++) {
- (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
- compress_type[c].suffix);
- if (noaction)
- printf("\trm -f %s\n", zfile1);
- else
- (void) unlink(zfile1);
- }
- }
- /*
- * Only add to the queue if the file hasn't already been added. This is
- * done to prevent circular include loops.
- */
- static void
- add_to_queue(const char *fname, struct ilist *inclist)
- {
- struct include_entry *inc;
- STAILQ_FOREACH(inc, inclist, inc_nextp) {
- if (strcmp(fname, inc->file) == 0) {
- warnx("duplicate include detected: %s", fname);
- return;
- }
- }
- inc = malloc(sizeof(struct include_entry));
- if (inc == NULL)
- err(1, "malloc of inc");
- inc->file = strdup(fname);
- if (verbose > 2)
- printf("\t+ Adding %s to the processing queue.\n", fname);
- STAILQ_INSERT_TAIL(inclist, inc, inc_nextp);
- }
- /*
- * Search for logfile and return its compression suffix (if supported)
- * The suffix detection is first-match in the order of compress_types
- *
- * Note: if logfile without suffix exists (uncompressed, COMPRESS_NONE)
- * a zero-length string is returned
- */
- static const char *
- get_logfile_suffix(const char *logfile)
- {
- struct stat st;
- char zfile[MAXPATHLEN];
- int c;
- for (c = 0; c < COMPRESS_TYPES; c++) {
- (void) strlcpy(zfile, logfile, MAXPATHLEN);
- (void) strlcat(zfile, compress_type[c].suffix, MAXPATHLEN);
- if (lstat(zfile, &st) == 0)
- return (compress_type[c].suffix);
- }
- return (NULL);
- }
- static fk_entry
- do_rotate(const struct conf_entry *ent)
- {
- char dirpart[MAXPATHLEN], namepart[MAXPATHLEN];
- char file1[MAXPATHLEN], file2[MAXPATHLEN];
- char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN];
- const char *logfile_suffix;
- char datetimestr[30];
- int flags, numlogs_c;
- fk_entry free_or_keep;
- struct sigwork_entry *swork;
- struct stat st;
- struct tm tm;
- time_t now;
- flags = ent->flags;
- free_or_keep = FREE_ENT;
- if (archtodir) {
- char *p;
- /* build complete name of archive directory into dirpart */
- if (*archdirname == '/') { /* absolute */
- strlcpy(dirpart, archdirname, sizeof(dirpart));
- } else { /* relative */
- /* get directory part of logfile */
- strlcpy(dirpart, ent->log, sizeof(dirpart));
- if ((p = strrchr(dirpart, '/')) == NULL)
- dirpart[0] = '\0';
- else
- *(p + 1) = '\0';
- strlcat(dirpart, archdirname, sizeof(dirpart));
- }
- /* check if archive directory exists, if not, create it */
- if (lstat(dirpart, &st))
- createdir(ent, dirpart);
- /* get filename part of logfile */
- if ((p = strrchr(ent->log, '/')) == NULL)
- strlcpy(namepart, ent->log, sizeof(namepart));
- else
- strlcpy(namepart, p + 1, sizeof(namepart));
- } else {
- /*
- * Tell utility functions we are not using an archive
- * dir.
- */
- dirpart[0] = '\0';
- strlcpy(namepart, ent->log, sizeof(namepart));
- }
- /* Delete old logs */
- if (timefnamefmt != NULL)
- delete_oldest_timelog(ent, dirpart);
- else {
- /*
- * Handle cleaning up after legacy newsyslog where we
- * kept ent->numlogs + 1 files. This code can go away
- * at some point in the future.
- */
- delete_classiclog(dirpart, namepart, ent->numlogs);
- if (ent->numlogs > 0)
- delete_classiclog(dirpart, namepart, ent->numlogs - 1);
- }
- if (timefnamefmt != NULL) {
- /* If time functions fails we can't really do any sensible */
- if (time(&now) == (time_t)-1 ||
- localtime_r(&now, &tm) == NULL)
- bzero(&tm, sizeof(tm));
- strftime(datetimestr, sizeof(datetimestr), timefnamefmt, &tm);
- if (archtodir)
- (void) snprintf(file1, sizeof(file1), "%s/%s.%s",
- dirpart, namepart, datetimestr);
- else
- (void) snprintf(file1, sizeof(file1), "%s.%s",
- ent->log, datetimestr);
- /* Don't run the code to move down logs */
- numlogs_c = -1;
- } else {
- gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
- ent->numlogs - 1);
- numlogs_c = ent->numlogs - 2; /* copy for countdown */
- }
- /* Move down log files */
- for (; numlogs_c >= 0; numlogs_c--) {
- (void) strlcpy(file2, file1, sizeof(file2));
- gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
- numlogs_c);
- logfile_suffix = get_logfile_suffix(file1);
- if (logfile_suffix == NULL)
- continue;
- (void) strlcpy(zfile1, file1, MAXPATHLEN);
- (void) strlcpy(zfile2, file2, MAXPATHLEN);
- (void) strlcat(zfile1, logfile_suffix, MAXPATHLEN);
- (void) strlcat(zfile2, logfile_suffix, MAXPATHLEN);
- if (noaction)
- printf("\tmv %s %s\n", zfile1, zfile2);
- else {
- /* XXX - Ought to be checking for failure! */
- (void)rename(zfile1, zfile2);
- }
- change_attrs(zfile2, ent);
- }
- if (ent->numlogs > 0) {
- if (noaction) {
- /*
- * Note that savelog() may succeed with using link()
- * for the archtodir case, but there is no good way
- * of knowing if it will when doing "noaction", so
- * here we claim that it will have to do a copy...
- */
- if (archtodir)
- printf("\tcp %s %s\n", ent->log, file1);
- else
- printf("\tln %s %s\n", ent->log, file1);
- } else {
- if (!(flags & CE_BINARY)) {
- /* Report the trimming to the old log */
- log_trim(ent->log, ent);
- }
- savelog(ent->log, file1);
- }
- change_attrs(file1, ent);
- }
- /* Create the new log file and move it into place *…
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