newsyslog.c revision 246918
1231990Smp/*- 259243Sobrien * ------+---------+---------+-------- + --------+---------+---------+---------* 359243Sobrien * This file includes significant modifications done by: 459243Sobrien * Copyright (c) 2003, 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 559243Sobrien * All rights reserved. 659243Sobrien * 759243Sobrien * Redistribution and use in source and binary forms, with or without 859243Sobrien * modification, are permitted provided that the following conditions 959243Sobrien * are met: 1059243Sobrien * 1. Redistributions of source code must retain the above copyright 1159243Sobrien * notice, this list of conditions and the following disclaimer. 1259243Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1359243Sobrien * notice, this list of conditions and the following disclaimer in the 1459243Sobrien * documentation and/or other materials provided with the distribution. 1559243Sobrien * 1659243Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17100616Smp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1859243Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1959243Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2059243Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2159243Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2259243Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2359243Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2459243Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2559243Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2659243Sobrien * SUCH DAMAGE. 2759243Sobrien * 2859243Sobrien * ------+---------+---------+-------- + --------+---------+---------+---------* 2959243Sobrien */ 3059243Sobrien 3159243Sobrien/* 3259243Sobrien * This file contains changes from the Open Software Foundation. 3359243Sobrien */ 3469408Sache 3559243Sobrien/* 36231990Smp * Copyright 1988, 1989 by the Massachusetts Institute of Technology 37231990Smp * 3859243Sobrien * Permission to use, copy, modify, and distribute this software and its 3959243Sobrien * documentation for any purpose and without fee is hereby granted, provided 4059243Sobrien * that the above copyright notice appear in all copies and that both that 4159243Sobrien * copyright notice and this permission notice appear in supporting 4259243Sobrien * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be 4359243Sobrien * used in advertising or publicity pertaining to distribution of the 4459243Sobrien * software without specific, written prior permission. M.I.T. and the M.I.T. 4559243Sobrien * S.I.P.B. make no representations about the suitability of this software 4659243Sobrien * for any purpose. It is provided "as is" without express or implied 4759243Sobrien * warranty. 4859243Sobrien * 4959243Sobrien */ 5059243Sobrien 5159243Sobrien/* 5259243Sobrien * newsyslog - roll over selected logs at the appropriate time, keeping the a 5359243Sobrien * specified number of backup files around. 5459243Sobrien */ 5559243Sobrien 5659243Sobrien#include <sys/cdefs.h> 5759243Sobrien__FBSDID("$FreeBSD: stable/9/usr.sbin/newsyslog/newsyslog.c 246918 2013-02-17 19:49:18Z markj $"); 5859243Sobrien 5959243Sobrien#define OSF 6059243Sobrien 6159243Sobrien#include <sys/param.h> 6259243Sobrien#include <sys/queue.h> 6359243Sobrien#include <sys/stat.h> 6459243Sobrien#include <sys/wait.h> 6559243Sobrien 6659243Sobrien#include <assert.h> 6759243Sobrien#include <ctype.h> 6859243Sobrien#include <err.h> 6959243Sobrien#include <errno.h> 7059243Sobrien#include <dirent.h> 7159243Sobrien#include <fcntl.h> 7259243Sobrien#include <fnmatch.h> 7359243Sobrien#include <glob.h> 7459243Sobrien#include <grp.h> 7559243Sobrien#include <paths.h> 7659243Sobrien#include <pwd.h> 7759243Sobrien#include <signal.h> 7859243Sobrien#include <stdio.h> 7959243Sobrien#include <libgen.h> 8059243Sobrien#include <stdlib.h> 8159243Sobrien#include <string.h> 8259243Sobrien#include <time.h> 8359243Sobrien#include <unistd.h> 8459243Sobrien 8559243Sobrien#include "pathnames.h" 8659243Sobrien#include "extern.h" 87167465Smp 88145479Smp/* 8959243Sobrien * Compression suffixes 9059243Sobrien */ 9159243Sobrien#ifndef COMPRESS_SUFFIX_GZ 9259243Sobrien#define COMPRESS_SUFFIX_GZ ".gz" 9359243Sobrien#endif 9459243Sobrien 9559243Sobrien#ifndef COMPRESS_SUFFIX_BZ2 9659243Sobrien#define COMPRESS_SUFFIX_BZ2 ".bz2" 9759243Sobrien#endif 9859243Sobrien 9959243Sobrien#ifndef COMPRESS_SUFFIX_XZ 10059243Sobrien#define COMPRESS_SUFFIX_XZ ".xz" 10159243Sobrien#endif 10259243Sobrien 10359243Sobrien#define COMPRESS_SUFFIX_MAXLEN MAX(MAX(sizeof(COMPRESS_SUFFIX_GZ),sizeof(COMPRESS_SUFFIX_BZ2)),sizeof(COMPRESS_SUFFIX_XZ)) 10459243Sobrien 10559243Sobrien/* 10659243Sobrien * Compression types 10759243Sobrien */ 10859243Sobrien#define COMPRESS_TYPES 4 /* Number of supported compression types */ 10959243Sobrien 11059243Sobrien#define COMPRESS_NONE 0 11159243Sobrien#define COMPRESS_GZIP 1 11259243Sobrien#define COMPRESS_BZIP2 2 11359243Sobrien#define COMPRESS_XZ 3 11459243Sobrien 11559243Sobrien/* 11659243Sobrien * Bit-values for the 'flags' parsed from a config-file entry. 11759243Sobrien */ 11859243Sobrien#define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */ 11959243Sobrien /* messages to logfile(s) when rotating. */ 12059243Sobrien#define CE_NOSIGNAL 0x0010 /* There is no process to signal when */ 12159243Sobrien /* trimming this file. */ 12259243Sobrien#define CE_TRIMAT 0x0020 /* trim file at a specific time. */ 12359243Sobrien#define CE_GLOB 0x0040 /* name of the log is file name pattern. */ 12459243Sobrien#define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */ 12559243Sobrien /* process when trimming this file. */ 12659243Sobrien#define CE_CREATE 0x0100 /* Create the log file if it does not exist. */ 12759243Sobrien#define CE_NODUMP 0x0200 /* Set 'nodump' on newly created log file. */ 12859243Sobrien#define CE_PID2CMD 0x0400 /* Replace PID file with a shell command.*/ 12959243Sobrien 13059243Sobrien#define MIN_PID 5 /* Don't touch pids lower than this */ 13159243Sobrien#define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */ 13259243Sobrien 13359243Sobrien#define kbytes(size) (((size) + 1023) >> 10) 13459243Sobrien 13559243Sobrien#define DEFAULT_MARKER "<default>" 13659243Sobrien#define DEBUG_MARKER "<debug>" 13759243Sobrien#define INCLUDE_MARKER "<include>" 13859243Sobrien#define DEFAULT_TIMEFNAME_FMT "%Y%m%dT%H%M%S" 13959243Sobrien 14059243Sobrien#define MAX_OLDLOGS 65536 /* Default maximum number of old logfiles */ 14159243Sobrien 14259243Sobrienstruct compress_types { 14359243Sobrien const char *flag; /* Flag in configuration file */ 14459243Sobrien const char *suffix; /* Compression suffix */ 14559243Sobrien const char *path; /* Path to compression program */ 14659243Sobrien}; 14759243Sobrien 14859243Sobrienconst struct compress_types compress_type[COMPRESS_TYPES] = { 14959243Sobrien { "", "", "" }, /* no compression */ 15059243Sobrien { "Z", COMPRESS_SUFFIX_GZ, _PATH_GZIP }, /* gzip compression */ 15159243Sobrien { "J", COMPRESS_SUFFIX_BZ2, _PATH_BZIP2 }, /* bzip2 compression */ 15259243Sobrien { "X", COMPRESS_SUFFIX_XZ, _PATH_XZ } /* xz compression */ 15359243Sobrien}; 15459243Sobrien 15559243Sobrienstruct conf_entry { 15659243Sobrien STAILQ_ENTRY(conf_entry) cf_nextp; 15759243Sobrien char *log; /* Name of the log */ 15859243Sobrien char *pid_cmd_file; /* PID or command file */ 15959243Sobrien char *r_reason; /* The reason this file is being rotated */ 16059243Sobrien int firstcreate; /* Creating log for the first time (-C). */ 16159243Sobrien int rotate; /* Non-zero if this file should be rotated */ 16259243Sobrien int fsize; /* size found for the log file */ 16359243Sobrien uid_t uid; /* Owner of log */ 16459243Sobrien gid_t gid; /* Group of log */ 16559243Sobrien int numlogs; /* Number of logs to keep */ 16659243Sobrien int trsize; /* Size cutoff to trigger trimming the log */ 16759243Sobrien int hours; /* Hours between log trimming */ 16859243Sobrien struct ptime_data *trim_at; /* Specific time to do trimming */ 16959243Sobrien unsigned int permissions; /* File permissions on the log */ 17059243Sobrien int flags; /* CE_BINARY */ 17159243Sobrien int compress; /* Compression */ 17259243Sobrien int sig; /* Signal to send */ 17359243Sobrien int def_cfg; /* Using the <default> rule for this file */ 17459243Sobrien}; 17559243Sobrien 17659243Sobrienstruct sigwork_entry { 17759243Sobrien SLIST_ENTRY(sigwork_entry) sw_nextp; 17859243Sobrien int sw_signum; /* the signal to send */ 17959243Sobrien int sw_pidok; /* true if pid value is valid */ 18059243Sobrien pid_t sw_pid; /* the process id from the PID file */ 18159243Sobrien const char *sw_pidtype; /* "daemon" or "process group" */ 18259243Sobrien int sw_runcmd; /* run command or send PID to signal */ 18359243Sobrien char sw_fname[1]; /* file the PID was read from or shell cmd */ 18459243Sobrien}; 18559243Sobrien 18659243Sobrienstruct zipwork_entry { 18759243Sobrien SLIST_ENTRY(zipwork_entry) zw_nextp; 18859243Sobrien const struct conf_entry *zw_conf; /* for chown/perm/flag info */ 18959243Sobrien const struct sigwork_entry *zw_swork; /* to know success of signal */ 19059243Sobrien int zw_fsize; /* size of the file to compress */ 19159243Sobrien char zw_fname[1]; /* the file to compress */ 19259243Sobrien}; 19359243Sobrien 19459243Sobrienstruct include_entry { 19559243Sobrien STAILQ_ENTRY(include_entry) inc_nextp; 19659243Sobrien const char *file; /* Name of file to process */ 19759243Sobrien}; 19859243Sobrien 19959243Sobrienstruct oldlog_entry { 20059243Sobrien char *fname; /* Filename of the log file */ 20159243Sobrien time_t t; /* Parsed timestamp of the logfile */ 20259243Sobrien}; 20359243Sobrien 20459243Sobrientypedef enum { 20559243Sobrien FREE_ENT, KEEP_ENT 20659243Sobrien} fk_entry; 20759243Sobrien 20859243SobrienSTAILQ_HEAD(cflist, conf_entry); 20959243SobrienSLIST_HEAD(swlisthead, sigwork_entry) swhead = SLIST_HEAD_INITIALIZER(swhead); 21059243SobrienSLIST_HEAD(zwlisthead, zipwork_entry) zwhead = SLIST_HEAD_INITIALIZER(zwhead); 21159243SobrienSTAILQ_HEAD(ilist, include_entry); 21259243Sobrien 21359243Sobrienint dbg_at_times; /* -D Show details of 'trim_at' code */ 21459243Sobrien 21559243Sobrienint archtodir = 0; /* Archive old logfiles to other directory */ 21659243Sobrienint createlogs; /* Create (non-GLOB) logfiles which do not */ 21759243Sobrien /* already exist. 1=='for entries with */ 21859243Sobrien /* C flag', 2=='for all entries'. */ 21959243Sobrienint verbose = 0; /* Print out what's going on */ 22059243Sobrienint needroot = 1; /* Root privs are necessary */ 22159243Sobrienint noaction = 0; /* Don't do anything, just show it */ 22259243Sobrienint norotate = 0; /* Don't rotate */ 22359243Sobrienint nosignal; /* Do not send any signals */ 22459243Sobrienint enforcepid = 0; /* If PID file does not exist or empty, do nothing */ 22559243Sobrienint force = 0; /* Force the trim no matter what */ 22659243Sobrienint rotatereq = 0; /* -R = Always rotate the file(s) as given */ 22759243Sobrien /* on the command (this also requires */ 22859243Sobrien /* that a list of files *are* given on */ 22959243Sobrien /* the run command). */ 23059243Sobrienchar *requestor; /* The name given on a -R request */ 23159243Sobrienchar *timefnamefmt = NULL; /* Use time based filenames instead of .0 etc */ 23259243Sobrienchar *archdirname; /* Directory path to old logfiles archive */ 23359243Sobrienchar *destdir = NULL; /* Directory to treat at root for logs */ 23459243Sobrienconst char *conf; /* Configuration file to use */ 23559243Sobrien 23659243Sobrienstruct ptime_data *dbg_timenow; /* A "timenow" value set via -D option */ 23759243Sobrienstruct ptime_data *timenow; /* The time to use for checking at-fields */ 23859243Sobrien 23959243Sobrien#define DAYTIME_LEN 16 24059243Sobrienchar daytime[DAYTIME_LEN]; /* The current time in human readable form, 24159243Sobrien * used for rotation-tracking messages. */ 24259243Sobrienchar hostname[MAXHOSTNAMELEN]; /* hostname */ 24359243Sobrien 24459243Sobrienconst char *path_syslogpid = _PATH_SYSLOGPID; 24559243Sobrien 24659243Sobrienstatic struct cflist *get_worklist(char **files); 24759243Sobrienstatic void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, 24859243Sobrien struct conf_entry *defconf_p, struct ilist *inclist); 24959243Sobrienstatic void add_to_queue(const char *fname, struct ilist *inclist); 25059243Sobrienstatic char *sob(char *p); 25159243Sobrienstatic char *son(char *p); 25259243Sobrienstatic int isnumberstr(const char *); 25359243Sobrienstatic int isglobstr(const char *); 25459243Sobrienstatic char *missing_field(char *p, char *errline); 25559243Sobrienstatic void change_attrs(const char *, const struct conf_entry *); 25659243Sobrienstatic const char *get_logfile_suffix(const char *logfile); 25759243Sobrienstatic fk_entry do_entry(struct conf_entry *); 25859243Sobrienstatic fk_entry do_rotate(const struct conf_entry *); 25959243Sobrienstatic void do_sigwork(struct sigwork_entry *); 26059243Sobrienstatic void do_zipwork(struct zipwork_entry *); 26159243Sobrienstatic struct sigwork_entry * 26259243Sobrien save_sigwork(const struct conf_entry *); 26359243Sobrienstatic struct zipwork_entry * 26459243Sobrien save_zipwork(const struct conf_entry *, const struct 26559243Sobrien sigwork_entry *, int, const char *); 26659243Sobrienstatic void set_swpid(struct sigwork_entry *, const struct conf_entry *); 26759243Sobrienstatic int sizefile(const char *); 26859243Sobrienstatic void expand_globs(struct cflist *work_p, struct cflist *glob_p); 26959243Sobrienstatic void free_clist(struct cflist *list); 27059243Sobrienstatic void free_entry(struct conf_entry *ent); 27159243Sobrienstatic struct conf_entry *init_entry(const char *fname, 27259243Sobrien struct conf_entry *src_entry); 27359243Sobrienstatic void parse_args(int argc, char **argv); 27459243Sobrienstatic int parse_doption(const char *doption); 27559243Sobrienstatic void usage(void); 27659243Sobrienstatic int log_trim(const char *logname, const struct conf_entry *log_ent); 27759243Sobrienstatic int age_old_log(char *file); 27859243Sobrienstatic void savelog(char *from, char *to); 27959243Sobrienstatic void createdir(const struct conf_entry *ent, char *dirpart); 28059243Sobrienstatic void createlog(const struct conf_entry *ent); 28159243Sobrien 28259243Sobrien/* 28359243Sobrien * All the following take a parameter of 'int', but expect values in the 28459243Sobrien * range of unsigned char. Define wrappers which take values of type 'char', 28559243Sobrien * whether signed or unsigned, and ensure they end up in the right range. 28659243Sobrien */ 28759243Sobrien#define isdigitch(Anychar) isdigit((u_char)(Anychar)) 28859243Sobrien#define isprintch(Anychar) isprint((u_char)(Anychar)) 28959243Sobrien#define isspacech(Anychar) isspace((u_char)(Anychar)) 29059243Sobrien#define tolowerch(Anychar) tolower((u_char)(Anychar)) 29159243Sobrien 29259243Sobrienint 29359243Sobrienmain(int argc, char **argv) 29459243Sobrien{ 29559243Sobrien struct cflist *worklist; 29659243Sobrien struct conf_entry *p; 29759243Sobrien struct sigwork_entry *stmp; 29859243Sobrien struct zipwork_entry *ztmp; 29959243Sobrien 30059243Sobrien SLIST_INIT(&swhead); 30159243Sobrien SLIST_INIT(&zwhead); 30259243Sobrien 30359243Sobrien parse_args(argc, argv); 30459243Sobrien argc -= optind; 30559243Sobrien argv += optind; 30659243Sobrien 30759243Sobrien if (needroot && getuid() && geteuid()) 30859243Sobrien errx(1, "must have root privs"); 30959243Sobrien worklist = get_worklist(argv); 31059243Sobrien 31159243Sobrien /* 31259243Sobrien * Rotate all the files which need to be rotated. Note that 31359243Sobrien * some users have *hundreds* of entries in newsyslog.conf! 31459243Sobrien */ 31559243Sobrien while (!STAILQ_EMPTY(worklist)) { 31659243Sobrien p = STAILQ_FIRST(worklist); 31759243Sobrien STAILQ_REMOVE_HEAD(worklist, cf_nextp); 31859243Sobrien if (do_entry(p) == FREE_ENT) 31959243Sobrien free_entry(p); 32059243Sobrien } 32159243Sobrien 32259243Sobrien /* 32359243Sobrien * Send signals to any processes which need a signal to tell 32459243Sobrien * them to close and re-open the log file(s) we have rotated. 32559243Sobrien * Note that zipwork_entries include pointers to these 32659243Sobrien * sigwork_entry's, so we can not free the entries here. 32759243Sobrien */ 32859243Sobrien if (!SLIST_EMPTY(&swhead)) { 32959243Sobrien if (noaction || verbose) 33059243Sobrien printf("Signal all daemon process(es)...\n"); 33159243Sobrien SLIST_FOREACH(stmp, &swhead, sw_nextp) 33259243Sobrien do_sigwork(stmp); 33359243Sobrien if (noaction) 33459243Sobrien printf("\tsleep 10\n"); 33559243Sobrien else { 33659243Sobrien if (verbose) 33759243Sobrien printf("Pause 10 seconds to allow daemon(s)" 33859243Sobrien " to close log file(s)\n"); 33959243Sobrien sleep(10); 34059243Sobrien } 34159243Sobrien } 34259243Sobrien /* 34359243Sobrien * Compress all files that we're expected to compress, now 34459243Sobrien * that all processes should have closed the files which 34559243Sobrien * have been rotated. 34659243Sobrien */ 34759243Sobrien if (!SLIST_EMPTY(&zwhead)) { 34859243Sobrien if (noaction || verbose) 34959243Sobrien printf("Compress all rotated log file(s)...\n"); 35059243Sobrien while (!SLIST_EMPTY(&zwhead)) { 35159243Sobrien ztmp = SLIST_FIRST(&zwhead); 35259243Sobrien do_zipwork(ztmp); 35359243Sobrien SLIST_REMOVE_HEAD(&zwhead, zw_nextp); 35459243Sobrien free(ztmp); 35559243Sobrien } 35659243Sobrien } 35759243Sobrien /* Now free all the sigwork entries. */ 35859243Sobrien while (!SLIST_EMPTY(&swhead)) { 35959243Sobrien stmp = SLIST_FIRST(&swhead); 36059243Sobrien SLIST_REMOVE_HEAD(&swhead, sw_nextp); 36159243Sobrien free(stmp); 36259243Sobrien } 36359243Sobrien 36459243Sobrien while (wait(NULL) > 0 || errno == EINTR) 36559243Sobrien ; 36659243Sobrien return (0); 36759243Sobrien} 36859243Sobrien 36959243Sobrienstatic struct conf_entry * 37059243Sobrieninit_entry(const char *fname, struct conf_entry *src_entry) 37159243Sobrien{ 37259243Sobrien struct conf_entry *tempwork; 37359243Sobrien 37459243Sobrien if (verbose > 4) 37559243Sobrien printf("\t--> [creating entry for %s]\n", fname); 37659243Sobrien 37759243Sobrien tempwork = malloc(sizeof(struct conf_entry)); 37859243Sobrien if (tempwork == NULL) 37959243Sobrien err(1, "malloc of conf_entry for %s", fname); 38059243Sobrien 38159243Sobrien if (destdir == NULL || fname[0] != '/') 38259243Sobrien tempwork->log = strdup(fname); 38359243Sobrien else 38459243Sobrien asprintf(&tempwork->log, "%s%s", destdir, fname); 38559243Sobrien if (tempwork->log == NULL) 38659243Sobrien err(1, "strdup for %s", fname); 38759243Sobrien 38859243Sobrien if (src_entry != NULL) { 38959243Sobrien tempwork->pid_cmd_file = NULL; 39059243Sobrien if (src_entry->pid_cmd_file) 39159243Sobrien tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file); 39259243Sobrien tempwork->r_reason = NULL; 39359243Sobrien tempwork->firstcreate = 0; 39459243Sobrien tempwork->rotate = 0; 39559243Sobrien tempwork->fsize = -1; 39659243Sobrien tempwork->uid = src_entry->uid; 39759243Sobrien tempwork->gid = src_entry->gid; 39859243Sobrien tempwork->numlogs = src_entry->numlogs; 39959243Sobrien tempwork->trsize = src_entry->trsize; 40059243Sobrien tempwork->hours = src_entry->hours; 40159243Sobrien tempwork->trim_at = NULL; 40259243Sobrien if (src_entry->trim_at != NULL) 40359243Sobrien tempwork->trim_at = ptime_init(src_entry->trim_at); 40459243Sobrien tempwork->permissions = src_entry->permissions; 40559243Sobrien tempwork->flags = src_entry->flags; 40659243Sobrien tempwork->compress = src_entry->compress; 40759243Sobrien tempwork->sig = src_entry->sig; 40859243Sobrien tempwork->def_cfg = src_entry->def_cfg; 40959243Sobrien } else { 41059243Sobrien /* Initialize as a "do-nothing" entry */ 41159243Sobrien tempwork->pid_cmd_file = NULL; 41259243Sobrien tempwork->r_reason = NULL; 41359243Sobrien tempwork->firstcreate = 0; 41459243Sobrien tempwork->rotate = 0; 41559243Sobrien tempwork->fsize = -1; 41659243Sobrien tempwork->uid = (uid_t)-1; 41759243Sobrien tempwork->gid = (gid_t)-1; 41859243Sobrien tempwork->numlogs = 1; 41959243Sobrien tempwork->trsize = -1; 42059243Sobrien tempwork->hours = -1; 42159243Sobrien tempwork->trim_at = NULL; 42259243Sobrien tempwork->permissions = 0; 42359243Sobrien tempwork->flags = 0; 42459243Sobrien tempwork->compress = COMPRESS_NONE; 42559243Sobrien tempwork->sig = SIGHUP; 42659243Sobrien tempwork->def_cfg = 0; 42759243Sobrien } 42859243Sobrien 42959243Sobrien return (tempwork); 43059243Sobrien} 43159243Sobrien 43259243Sobrienstatic void 43359243Sobrienfree_entry(struct conf_entry *ent) 43459243Sobrien{ 43559243Sobrien 43659243Sobrien if (ent == NULL) 43759243Sobrien return; 43859243Sobrien 43959243Sobrien if (ent->log != NULL) { 44059243Sobrien if (verbose > 4) 44159243Sobrien printf("\t--> [freeing entry for %s]\n", ent->log); 44259243Sobrien free(ent->log); 44359243Sobrien ent->log = NULL; 44459243Sobrien } 44559243Sobrien 44659243Sobrien if (ent->pid_cmd_file != NULL) { 44759243Sobrien free(ent->pid_cmd_file); 44859243Sobrien ent->pid_cmd_file = NULL; 44959243Sobrien } 45059243Sobrien 45159243Sobrien if (ent->r_reason != NULL) { 45259243Sobrien free(ent->r_reason); 45359243Sobrien ent->r_reason = NULL; 45459243Sobrien } 45559243Sobrien 45659243Sobrien if (ent->trim_at != NULL) { 45759243Sobrien ptime_free(ent->trim_at); 45859243Sobrien ent->trim_at = NULL; 45959243Sobrien } 46059243Sobrien 46159243Sobrien free(ent); 46259243Sobrien} 46359243Sobrien 46459243Sobrienstatic void 46559243Sobrienfree_clist(struct cflist *list) 46659243Sobrien{ 46759243Sobrien struct conf_entry *ent; 46859243Sobrien 46959243Sobrien while (!STAILQ_EMPTY(list)) { 47059243Sobrien ent = STAILQ_FIRST(list); 47159243Sobrien STAILQ_REMOVE_HEAD(list, cf_nextp); 47259243Sobrien free_entry(ent); 47359243Sobrien } 47459243Sobrien 47559243Sobrien free(list); 47659243Sobrien list = NULL; 47759243Sobrien} 47859243Sobrien 47959243Sobrienstatic fk_entry 48059243Sobriendo_entry(struct conf_entry * ent) 48159243Sobrien{ 48259243Sobrien#define REASON_MAX 80 48359243Sobrien int modtime; 48459243Sobrien fk_entry free_or_keep; 48559243Sobrien double diffsecs; 48659243Sobrien char temp_reason[REASON_MAX]; 48759243Sobrien int oversized; 48859243Sobrien 48959243Sobrien free_or_keep = FREE_ENT; 49059243Sobrien if (verbose) 49159243Sobrien printf("%s <%d%s>: ", ent->log, ent->numlogs, 49259243Sobrien compress_type[ent->compress].flag); 49359243Sobrien ent->fsize = sizefile(ent->log); 49459243Sobrien oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize)); 49559243Sobrien modtime = age_old_log(ent->log); 49659243Sobrien ent->rotate = 0; 49759243Sobrien ent->firstcreate = 0; 49859243Sobrien if (ent->fsize < 0) { 49959243Sobrien /* 50059243Sobrien * If either the C flag or the -C option was specified, 50159243Sobrien * and if we won't be creating the file, then have the 50259243Sobrien * verbose message include a hint as to why the file 50359243Sobrien * will not be created. 50459243Sobrien */ 50559243Sobrien temp_reason[0] = '\0'; 50659243Sobrien if (createlogs > 1) 50759243Sobrien ent->firstcreate = 1; 50859243Sobrien else if ((ent->flags & CE_CREATE) && createlogs) 50959243Sobrien ent->firstcreate = 1; 51059243Sobrien else if (ent->flags & CE_CREATE) 51159243Sobrien strlcpy(temp_reason, " (no -C option)", REASON_MAX); 51259243Sobrien else if (createlogs) 51359243Sobrien strlcpy(temp_reason, " (no C flag)", REASON_MAX); 51459243Sobrien 51559243Sobrien if (ent->firstcreate) { 51659243Sobrien if (verbose) 51759243Sobrien printf("does not exist -> will create.\n"); 51859243Sobrien createlog(ent); 51959243Sobrien } else if (verbose) { 52059243Sobrien printf("does not exist, skipped%s.\n", temp_reason); 52159243Sobrien } 52259243Sobrien } else { 52359243Sobrien if (ent->flags & CE_TRIMAT && !force && !rotatereq && 52459243Sobrien !oversized) { 52559243Sobrien diffsecs = ptimeget_diff(timenow, ent->trim_at); 52659243Sobrien if (diffsecs < 0.0) { 52759243Sobrien /* trim_at is some time in the future. */ 52859243Sobrien if (verbose) { 52959243Sobrien ptime_adjust4dst(ent->trim_at, 53059243Sobrien timenow); 53159243Sobrien printf("--> will trim at %s", 53259243Sobrien ptimeget_ctime(ent->trim_at)); 53359243Sobrien } 53459243Sobrien return (free_or_keep); 53559243Sobrien } else if (diffsecs >= 3600.0) { 53659243Sobrien /* 53759243Sobrien * trim_at is more than an hour in the past, 53859243Sobrien * so find the next valid trim_at time, and 53959243Sobrien * tell the user what that will be. 54059243Sobrien */ 54159243Sobrien if (verbose && dbg_at_times) 54259243Sobrien printf("\n\t--> prev trim at %s\t", 54359243Sobrien ptimeget_ctime(ent->trim_at)); 54459243Sobrien if (verbose) { 54559243Sobrien ptimeset_nxtime(ent->trim_at); 54659243Sobrien printf("--> will trim at %s", 54759243Sobrien ptimeget_ctime(ent->trim_at)); 54859243Sobrien } 54959243Sobrien return (free_or_keep); 55059243Sobrien } else if (verbose && noaction && dbg_at_times) { 55159243Sobrien /* 55259243Sobrien * If we are just debugging at-times, then 55359243Sobrien * a detailed message is helpful. Also 55459243Sobrien * skip "doing" any commands, since they 55559243Sobrien * would all be turned off by no-action. 556131962Smp */ 55759243Sobrien printf("\n\t--> timematch at %s", 55859243Sobrien ptimeget_ctime(ent->trim_at)); 55959243Sobrien return (free_or_keep); 56059243Sobrien } else if (verbose && ent->hours <= 0) { 56159243Sobrien printf("--> time is up\n"); 56259243Sobrien } 56359243Sobrien } 56483098Smp if (verbose && (ent->trsize > 0)) 56583098Smp printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize); 56683098Smp if (verbose && (ent->hours > 0)) 56783098Smp printf(" age (hr): %d [%d] ", modtime, ent->hours); 56883098Smp 56983098Smp /* 57059243Sobrien * Figure out if this logfile needs to be rotated. 571167465Smp */ 572167465Smp temp_reason[0] = '\0'; 573167465Smp if (rotatereq) { 574167465Smp ent->rotate = 1; 575167465Smp snprintf(temp_reason, REASON_MAX, " due to -R from %s", 576167465Smp requestor); 577167465Smp } else if (force) { 578167465Smp ent->rotate = 1; 579167465Smp snprintf(temp_reason, REASON_MAX, " due to -F request"); 580167465Smp } else if (oversized) { 581167465Smp ent->rotate = 1; 582167465Smp snprintf(temp_reason, REASON_MAX, " due to size>%dK", 583167465Smp ent->trsize); 584167465Smp } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) { 58559243Sobrien ent->rotate = 1; 58659243Sobrien } else if ((ent->hours > 0) && ((modtime >= ent->hours) || 58759243Sobrien (modtime < 0))) { 588167465Smp ent->rotate = 1; 58959243Sobrien } 590167465Smp 591167465Smp /* 59259243Sobrien * If the file needs to be rotated, then rotate it. 59359243Sobrien */ 59459243Sobrien if (ent->rotate && !norotate) { 59559243Sobrien if (temp_reason[0] != '\0') 59659243Sobrien ent->r_reason = strdup(temp_reason); 597167465Smp if (verbose) 598167465Smp printf("--> trimming log....\n"); 599167465Smp if (noaction && !verbose) 60059243Sobrien printf("%s <%d%s>: trimming\n", ent->log, 60159243Sobrien ent->numlogs, 60259243Sobrien compress_type[ent->compress].flag); 60359243Sobrien free_or_keep = do_rotate(ent); 60459243Sobrien } else { 60559243Sobrien if (verbose) 60659243Sobrien printf("--> skipping\n"); 60759243Sobrien } 60859243Sobrien } 60959243Sobrien return (free_or_keep); 61059243Sobrien#undef REASON_MAX 61159243Sobrien} 61259243Sobrien 61359243Sobrienstatic void 61459243Sobrienparse_args(int argc, char **argv) 61559243Sobrien{ 61659243Sobrien int ch; 61759243Sobrien char *p; 61859243Sobrien 61959243Sobrien timenow = ptime_init(NULL); 620167465Smp ptimeset_time(timenow, time(NULL)); 62159243Sobrien strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN); 62259243Sobrien 62359243Sobrien /* Let's get our hostname */ 62459243Sobrien (void)gethostname(hostname, sizeof(hostname)); 62559243Sobrien 62659243Sobrien /* Truncate domain */ 62759243Sobrien if ((p = strchr(hostname, '.')) != NULL) 62859243Sobrien *p = '\0'; 62959243Sobrien 63059243Sobrien /* Parse command line options. */ 631167465Smp while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1) 63259243Sobrien switch (ch) { 63359243Sobrien case 'a': 63459243Sobrien archtodir++; 63559243Sobrien archdirname = optarg; 636231990Smp break; 63759243Sobrien case 'd': 63859243Sobrien destdir = optarg; 63959243Sobrien break; 64059243Sobrien case 'f': 64159243Sobrien conf = optarg; 64259243Sobrien break; 643167465Smp case 'n': 64459243Sobrien noaction++; 64559243Sobrien /* FALLTHROUGH */ 64659243Sobrien case 'r': 64759243Sobrien needroot = 0; 64859243Sobrien break; 64959243Sobrien case 's': 65059243Sobrien nosignal = 1; 65159243Sobrien break; 65259243Sobrien case 't': 65359243Sobrien if (optarg[0] == '\0' || 65459243Sobrien strcmp(optarg, "DEFAULT") == 0) 65559243Sobrien timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT); 656167465Smp else 65759243Sobrien timefnamefmt = strdup(optarg); 65859243Sobrien break; 65959243Sobrien case 'v': 66059243Sobrien verbose++; 66159243Sobrien break; 66259243Sobrien case 'C': 66359243Sobrien /* Useful for things like rc.diskless... */ 66459243Sobrien createlogs++; 66559243Sobrien break; 66659243Sobrien case 'D': 66759243Sobrien /* 66859243Sobrien * Set some debugging option. The specific option 66959243Sobrien * depends on the value of optarg. These options 67059243Sobrien * may come and go without notice or documentation. 67159243Sobrien */ 67259243Sobrien if (parse_doption(optarg)) 67359243Sobrien break; 67459243Sobrien usage(); 67559243Sobrien /* NOTREACHED */ 67659243Sobrien case 'F': 67759243Sobrien force++; 67859243Sobrien break; 67959243Sobrien case 'N': 68059243Sobrien norotate++; 68159243Sobrien break; 68259243Sobrien case 'P': 68359243Sobrien enforcepid++; 68459243Sobrien break; 68559243Sobrien case 'R': 68659243Sobrien rotatereq++; 68759243Sobrien requestor = strdup(optarg); 68859243Sobrien break; 68959243Sobrien case 'S': 69059243Sobrien path_syslogpid = optarg; 691167465Smp break; 69259243Sobrien case 'm': /* Used by OpenBSD for "monitor mode" */ 69359243Sobrien default: 69459243Sobrien usage(); 695167465Smp /* NOTREACHED */ 69659243Sobrien } 69759243Sobrien 69859243Sobrien if (force && norotate) { 69959243Sobrien warnx("Only one of -F and -N may be specified."); 70059243Sobrien usage(); 70159243Sobrien /* NOTREACHED */ 70259243Sobrien } 70359243Sobrien 70459243Sobrien if (rotatereq) { 70559243Sobrien if (optind == argc) { 70659243Sobrien warnx("At least one filename must be given when -R is specified."); 70759243Sobrien usage(); 70859243Sobrien /* NOTREACHED */ 70959243Sobrien } 71059243Sobrien /* Make sure "requestor" value is safe for a syslog message. */ 71159243Sobrien for (p = requestor; *p != '\0'; p++) { 71259243Sobrien if (!isprintch(*p) && (*p != '\t')) 71359243Sobrien *p = '.'; 71459243Sobrien } 71559243Sobrien } 71659243Sobrien 71759243Sobrien if (dbg_timenow) { 71859243Sobrien /* 71959243Sobrien * Note that the 'daytime' variable is not changed. 72059243Sobrien * That is only used in messages that track when a 72159243Sobrien * logfile is rotated, and if a file *is* rotated, 72259243Sobrien * then it will still rotated at the "real now" time. 72359243Sobrien */ 72459243Sobrien ptime_free(timenow); 72559243Sobrien timenow = dbg_timenow; 726167465Smp fprintf(stderr, "Debug: Running as if TimeNow is %s", 72759243Sobrien ptimeget_ctime(dbg_timenow)); 72859243Sobrien } 729167465Smp 73059243Sobrien} 73159243Sobrien 73259243Sobrien/* 73359243Sobrien * These debugging options are mainly meant for developer use, such 73459243Sobrien * as writing regression-tests. They would not be needed by users 73559243Sobrien * during normal operation of newsyslog... 73659243Sobrien */ 73759243Sobrienstatic int 73859243Sobrienparse_doption(const char *doption) 73959243Sobrien{ 74059243Sobrien const char TN[] = "TN="; 74159243Sobrien int res; 74259243Sobrien 74359243Sobrien if (strncmp(doption, TN, sizeof(TN) - 1) == 0) { 74459243Sobrien /* 74559243Sobrien * The "TimeNow" debugging option. This might be off 74659243Sobrien * by an hour when crossing a timezone change. 74759243Sobrien */ 74859243Sobrien dbg_timenow = ptime_init(NULL); 74959243Sobrien res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601, 75059243Sobrien time(NULL), doption + sizeof(TN) - 1); 75159243Sobrien if (res == -2) { 75259243Sobrien warnx("Non-existent time specified on -D %s", doption); 75359243Sobrien return (0); /* failure */ 75459243Sobrien } else if (res < 0) { 75559243Sobrien warnx("Malformed time given on -D %s", doption); 75659243Sobrien return (0); /* failure */ 757167465Smp } 75859243Sobrien return (1); /* successfully parsed */ 75959243Sobrien 76059243Sobrien } 76159243Sobrien 76259243Sobrien if (strcmp(doption, "ats") == 0) { 76359243Sobrien dbg_at_times++; 76459243Sobrien return (1); /* successfully parsed */ 76559243Sobrien } 76659243Sobrien 76759243Sobrien /* XXX - This check could probably be dropped. */ 76859243Sobrien if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder") 76959243Sobrien == 0)) { 77059243Sobrien warnx("NOTE: newsyslog always uses 'neworder'."); 77159243Sobrien return (1); /* successfully parsed */ 77259243Sobrien } 77359243Sobrien 77459243Sobrien warnx("Unknown -D (debug) option: '%s'", doption); 77559243Sobrien return (0); /* failure */ 77659243Sobrien} 77759243Sobrien 77859243Sobrienstatic void 77959243Sobrienusage(void) 78059243Sobrien{ 78159243Sobrien 78259243Sobrien fprintf(stderr, 78359243Sobrien "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n" 78459243Sobrien " [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n"); 78559243Sobrien exit(1); 78659243Sobrien} 78759243Sobrien 78859243Sobrien/* 78959243Sobrien * Parse a configuration file and return a linked list of all the logs 79059243Sobrien * which should be processed. 79159243Sobrien */ 79259243Sobrienstatic struct cflist * 79359243Sobrienget_worklist(char **files) 79459243Sobrien{ 79559243Sobrien FILE *f; 79659243Sobrien char **given; 79759243Sobrien struct cflist *cmdlist, *filelist, *globlist; 79859243Sobrien struct conf_entry *defconf, *dupent, *ent; 79959243Sobrien struct ilist inclist; 80059243Sobrien struct include_entry *inc; 80159243Sobrien int gmatch, fnres; 80259243Sobrien 80359243Sobrien defconf = NULL; 80459243Sobrien STAILQ_INIT(&inclist); 80559243Sobrien 80659243Sobrien filelist = malloc(sizeof(struct cflist)); 80759243Sobrien if (filelist == NULL) 80859243Sobrien err(1, "malloc of filelist"); 80959243Sobrien STAILQ_INIT(filelist); 81059243Sobrien globlist = malloc(sizeof(struct cflist)); 81159243Sobrien if (globlist == NULL) 81259243Sobrien err(1, "malloc of globlist"); 81359243Sobrien STAILQ_INIT(globlist); 81459243Sobrien 81559243Sobrien inc = malloc(sizeof(struct include_entry)); 81659243Sobrien if (inc == NULL) 81759243Sobrien err(1, "malloc of inc"); 81859243Sobrien inc->file = conf; 81959243Sobrien if (inc->file == NULL) 82059243Sobrien inc->file = _PATH_CONF; 82159243Sobrien STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp); 82259243Sobrien 82359243Sobrien STAILQ_FOREACH(inc, &inclist, inc_nextp) { 82459243Sobrien if (strcmp(inc->file, "-") != 0) 82559243Sobrien f = fopen(inc->file, "r"); 82659243Sobrien else { 82759243Sobrien f = stdin; 82859243Sobrien inc->file = "<stdin>"; 82959243Sobrien } 83059243Sobrien if (!f) 83159243Sobrien err(1, "%s", inc->file); 83259243Sobrien 83359243Sobrien if (verbose) 83459243Sobrien printf("Processing %s\n", inc->file); 83559243Sobrien parse_file(f, filelist, globlist, defconf, &inclist); 83659243Sobrien (void) fclose(f); 83759243Sobrien } 83859243Sobrien 83959243Sobrien /* 84059243Sobrien * All config-file information has been read in and turned into 84159243Sobrien * a filelist and a globlist. If there were no specific files 84259243Sobrien * given on the run command, then the only thing left to do is to 84359243Sobrien * call a routine which finds all files matched by the globlist 84459243Sobrien * and adds them to the filelist. Then return the worklist. 84559243Sobrien */ 84659243Sobrien if (*files == NULL) { 84759243Sobrien expand_globs(filelist, globlist); 84859243Sobrien free_clist(globlist); 84959243Sobrien if (defconf != NULL) 85059243Sobrien free_entry(defconf); 85159243Sobrien return (filelist); 85259243Sobrien /* NOTREACHED */ 85359243Sobrien } 85459243Sobrien 85559243Sobrien /* 85659243Sobrien * If newsyslog was given a specific list of files to process, 85759243Sobrien * it may be that some of those files were not listed in any 85859243Sobrien * config file. Those unlisted files should get the default 85959243Sobrien * rotation action. First, create the default-rotation action 86059243Sobrien * if none was found in a system config file. 86159243Sobrien */ 86259243Sobrien if (defconf == NULL) { 86359243Sobrien defconf = init_entry(DEFAULT_MARKER, NULL); 86459243Sobrien defconf->numlogs = 3; 86559243Sobrien defconf->trsize = 50; 86659243Sobrien defconf->permissions = S_IRUSR|S_IWUSR; 86759243Sobrien } 86859243Sobrien 86959243Sobrien /* 87059243Sobrien * If newsyslog was run with a list of specific filenames, 87159243Sobrien * then create a new worklist which has only those files in 87259243Sobrien * it, picking up the rotation-rules for those files from 87359243Sobrien * the original filelist. 87459243Sobrien * 87559243Sobrien * XXX - Note that this will copy multiple rules for a single 87659243Sobrien * logfile, if multiple entries are an exact match for 87759243Sobrien * that file. That matches the historic behavior, but do 87859243Sobrien * we want to continue to allow it? If so, it should 87959243Sobrien * probably be handled more intelligently. 88059243Sobrien */ 88159243Sobrien cmdlist = malloc(sizeof(struct cflist)); 88259243Sobrien if (cmdlist == NULL) 88359243Sobrien err(1, "malloc of cmdlist"); 88459243Sobrien STAILQ_INIT(cmdlist); 88559243Sobrien 88659243Sobrien for (given = files; *given; ++given) { 88759243Sobrien /* 88859243Sobrien * First try to find exact-matches for this given file. 88959243Sobrien */ 89059243Sobrien gmatch = 0; 89159243Sobrien STAILQ_FOREACH(ent, filelist, cf_nextp) { 89259243Sobrien if (strcmp(ent->log, *given) == 0) { 893167465Smp gmatch++; 89459243Sobrien dupent = init_entry(*given, ent); 89559243Sobrien STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 89659243Sobrien } 89759243Sobrien } 89859243Sobrien if (gmatch) { 89959243Sobrien if (verbose > 2) 90059243Sobrien printf("\t+ Matched entry %s\n", *given); 90159243Sobrien continue; 90259243Sobrien } 90359243Sobrien 90459243Sobrien /* 90559243Sobrien * There was no exact-match for this given file, so look 90659243Sobrien * for a "glob" entry which does match. 90759243Sobrien */ 90859243Sobrien gmatch = 0; 90959243Sobrien if (verbose > 2 && globlist != NULL) 91059243Sobrien printf("\t+ Checking globs for %s\n", *given); 91159243Sobrien STAILQ_FOREACH(ent, globlist, cf_nextp) { 91259243Sobrien fnres = fnmatch(ent->log, *given, FNM_PATHNAME); 91359243Sobrien if (verbose > 2) 91459243Sobrien printf("\t+ = %d for pattern %s\n", fnres, 91559243Sobrien ent->log); 91659243Sobrien if (fnres == 0) { 91759243Sobrien gmatch++; 91859243Sobrien dupent = init_entry(*given, ent); 91959243Sobrien /* This new entry is not a glob! */ 92059243Sobrien dupent->flags &= ~CE_GLOB; 92159243Sobrien STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 92259243Sobrien /* Only allow a match to one glob-entry */ 92359243Sobrien break; 92459243Sobrien } 92559243Sobrien } 92659243Sobrien if (gmatch) { 92759243Sobrien if (verbose > 2) 92859243Sobrien printf("\t+ Matched %s via %s\n", *given, 92959243Sobrien ent->log); 93059243Sobrien continue; 93159243Sobrien } 93259243Sobrien 93359243Sobrien /* 93459243Sobrien * This given file was not found in any config file, so 93559243Sobrien * add a worklist item based on the default entry. 93659243Sobrien */ 93759243Sobrien if (verbose > 2) 93859243Sobrien printf("\t+ No entry matched %s (will use %s)\n", 93959243Sobrien *given, DEFAULT_MARKER); 94059243Sobrien dupent = init_entry(*given, defconf); 94159243Sobrien /* Mark that it was *not* found in a config file */ 94259243Sobrien dupent->def_cfg = 1; 94359243Sobrien STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 94459243Sobrien } 94559243Sobrien 94659243Sobrien /* 94759243Sobrien * Free all the entries in the original work list, the list of 94859243Sobrien * glob entries, and the default entry. 94959243Sobrien */ 95059243Sobrien free_clist(filelist); 95159243Sobrien free_clist(globlist); 95259243Sobrien free_entry(defconf); 95359243Sobrien 95459243Sobrien /* And finally, return a worklist which matches the given files. */ 95559243Sobrien return (cmdlist); 95659243Sobrien} 95759243Sobrien 95859243Sobrien/* 95959243Sobrien * Expand the list of entries with filename patterns, and add all files 96059243Sobrien * which match those glob-entries onto the worklist. 96159243Sobrien */ 96259243Sobrienstatic void 96359243Sobrienexpand_globs(struct cflist *work_p, struct cflist *glob_p) 96459243Sobrien{ 96559243Sobrien int gmatch, gres; 96659243Sobrien size_t i; 96759243Sobrien char *mfname; 96859243Sobrien struct conf_entry *dupent, *ent, *globent; 96959243Sobrien glob_t pglob; 97059243Sobrien struct stat st_fm; 97159243Sobrien 97259243Sobrien /* 97359243Sobrien * The worklist contains all fully-specified (non-GLOB) names. 97459243Sobrien * 97559243Sobrien * Now expand the list of filename-pattern (GLOB) entries into 97659243Sobrien * a second list, which (by definition) will only match files 97759243Sobrien * that already exist. Do not add a glob-related entry for any 97859243Sobrien * file which already exists in the fully-specified list. 97959243Sobrien */ 98059243Sobrien STAILQ_FOREACH(globent, glob_p, cf_nextp) { 98159243Sobrien gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob); 98259243Sobrien if (gres != 0) { 98359243Sobrien warn("cannot expand pattern (%d): %s", gres, 98459243Sobrien globent->log); 98559243Sobrien continue; 98659243Sobrien } 98759243Sobrien 98859243Sobrien if (verbose > 2) 98959243Sobrien printf("\t+ Expanding pattern %s\n", globent->log); 99059243Sobrien for (i = 0; i < pglob.gl_matchc; i++) { 99159243Sobrien mfname = pglob.gl_pathv[i]; 99259243Sobrien 99359243Sobrien /* See if this file already has a specific entry. */ 99459243Sobrien gmatch = 0; 99559243Sobrien STAILQ_FOREACH(ent, work_p, cf_nextp) { 99659243Sobrien if (strcmp(mfname, ent->log) == 0) { 99759243Sobrien gmatch++; 99859243Sobrien break; 99959243Sobrien } 100059243Sobrien } 100159243Sobrien if (gmatch) 100259243Sobrien continue; 100359243Sobrien 100459243Sobrien /* Make sure the named matched is a file. */ 100559243Sobrien gres = lstat(mfname, &st_fm); 100659243Sobrien if (gres != 0) { 100759243Sobrien /* Error on a file that glob() matched?!? */ 100859243Sobrien warn("Skipping %s - lstat() error", mfname); 100959243Sobrien continue; 101059243Sobrien } 101159243Sobrien if (!S_ISREG(st_fm.st_mode)) { 101259243Sobrien /* We only rotate files! */ 101359243Sobrien if (verbose > 2) 101459243Sobrien printf("\t+ . skipping %s (!file)\n", 101559243Sobrien mfname); 101659243Sobrien continue; 101759243Sobrien } 101859243Sobrien 101959243Sobrien if (verbose > 2) 102059243Sobrien printf("\t+ . add file %s\n", mfname); 102159243Sobrien dupent = init_entry(mfname, globent); 102259243Sobrien /* This new entry is not a glob! */ 102359243Sobrien dupent->flags &= ~CE_GLOB; 102459243Sobrien 102559243Sobrien /* Add to the worklist. */ 102659243Sobrien STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp); 102759243Sobrien } 102859243Sobrien globfree(&pglob); 102959243Sobrien if (verbose > 2) 1030167465Smp printf("\t+ Done with pattern %s\n", globent->log); 103159243Sobrien } 103259243Sobrien} 103359243Sobrien 103459243Sobrien/* 103559243Sobrien * Parse a configuration file and update a linked list of all the logs to 103659243Sobrien * process. 103759243Sobrien */ 103859243Sobrienstatic void 103959243Sobrienparse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, 104059243Sobrien struct conf_entry *defconf_p, struct ilist *inclist) 104159243Sobrien{ 104259243Sobrien char line[BUFSIZ], *parse, *q; 104359243Sobrien char *cp, *errline, *group; 104459243Sobrien struct conf_entry *working; 104559243Sobrien struct passwd *pwd; 104659243Sobrien struct group *grp; 104759243Sobrien glob_t pglob; 104859243Sobrien int eol, ptm_opts, res, special; 104959243Sobrien size_t i; 105059243Sobrien 105159243Sobrien errline = NULL; 105259243Sobrien while (fgets(line, BUFSIZ, cf)) { 1053167465Smp if ((line[0] == '\n') || (line[0] == '#') || 105459243Sobrien (strlen(line) == 0)) 105559243Sobrien continue; 105659243Sobrien if (errline != NULL) 105759243Sobrien free(errline); 105859243Sobrien errline = strdup(line); 105959243Sobrien for (cp = line + 1; *cp != '\0'; cp++) { 106059243Sobrien if (*cp != '#') 106159243Sobrien continue; 106259243Sobrien if (*(cp - 1) == '\\') { 1063167465Smp strcpy(cp - 1, cp); 106459243Sobrien cp--; 106559243Sobrien continue; 106659243Sobrien } 106759243Sobrien *cp = '\0'; 106859243Sobrien break; 106959243Sobrien } 107059243Sobrien 107159243Sobrien q = parse = missing_field(sob(line), errline); 107259243Sobrien parse = son(line); 1073167465Smp if (!*parse) 107459243Sobrien errx(1, "malformed line (missing fields):\n%s", 107559243Sobrien errline); 107659243Sobrien *parse = '\0'; 107759243Sobrien 107859243Sobrien /* 107959243Sobrien * Allow people to set debug options via the config file. 108059243Sobrien * (NOTE: debug options are undocumented, and may disappear 108159243Sobrien * at any time, etc). 108259243Sobrien */ 108359243Sobrien if (strcasecmp(DEBUG_MARKER, q) == 0) { 1084167465Smp q = parse = missing_field(sob(++parse), errline); 108559243Sobrien parse = son(parse); 1086145479Smp if (!*parse) 108759243Sobrien warnx("debug line specifies no option:\n%s", 108859243Sobrien errline); 108959243Sobrien else { 109059243Sobrien *parse = '\0'; 109159243Sobrien parse_doption(q); 109259243Sobrien } 109359243Sobrien continue; 109459243Sobrien } else if (strcasecmp(INCLUDE_MARKER, q) == 0) { 109559243Sobrien if (verbose) 109659243Sobrien printf("Found: %s", errline); 109759243Sobrien q = parse = missing_field(sob(++parse), errline); 109859243Sobrien parse = son(parse); 109959243Sobrien if (!*parse) { 110059243Sobrien warnx("include line missing argument:\n%s", 110159243Sobrien errline); 110259243Sobrien continue; 110359243Sobrien } 110459243Sobrien 110559243Sobrien *parse = '\0'; 110659243Sobrien 110759243Sobrien if (isglobstr(q)) { 110859243Sobrien res = glob(q, GLOB_NOCHECK, NULL, &pglob); 110959243Sobrien if (res != 0) { 111059243Sobrien warn("cannot expand pattern (%d): %s", 111159243Sobrien res, q); 111259243Sobrien continue; 111359243Sobrien } 111459243Sobrien 111559243Sobrien if (verbose > 2) 111659243Sobrien printf("\t+ Expanding pattern %s\n", q); 111759243Sobrien 1118167465Smp for (i = 0; i < pglob.gl_matchc; i++) 111959243Sobrien add_to_queue(pglob.gl_pathv[i], 112059243Sobrien inclist); 112159243Sobrien globfree(&pglob); 112259243Sobrien } else 112359243Sobrien add_to_queue(q, inclist); 112459243Sobrien continue; 112559243Sobrien } 112659243Sobrien 112759243Sobrien special = 0; 112859243Sobrien working = init_entry(q, NULL); 112959243Sobrien if (strcasecmp(DEFAULT_MARKER, q) == 0) { 113059243Sobrien special = 1; 113159243Sobrien if (defconf_p != NULL) { 113259243Sobrien warnx("Ignoring duplicate entry for %s!", q); 113359243Sobrien free_entry(working); 113459243Sobrien continue; 113569408Sache } 113659243Sobrien defconf_p = working; 1137167465Smp } 113859243Sobrien 113959243Sobrien q = parse = missing_field(sob(++parse), errline); 114059243Sobrien parse = son(parse); 114169408Sache 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; 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); 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) { 1582 snprintf(errbuf, sizeof(errbuf), 1583 "Could not delete 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 clasic filenames. 1604 */ 1605static void 1606gen_clasiclog_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 logfiles, when using clasic filenames. 1619 */ 1620static void 1621delete_clasiclog(const char *archive_dir, const char *namepart, int numlog_c) 1622{ 1623 char file1[MAXPATHLEN], zfile1[MAXPATHLEN]; 1624 int c; 1625 1626 gen_clasiclog_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 = rindex(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 = rindex(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_clasiclog(dirpart, namepart, ent->numlogs); 1751 1752 if (ent->numlogs > 0) 1753 delete_clasiclog(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_clasiclog_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_clasiclog_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 printf("\ttouch %s\t\t" 1816 "# Update mtime for 'when'-interval processing\n", 1817 file1); 1818 } else { 1819 if (!(flags & CE_BINARY)) { 1820 /* Report the trimming to the old log */ 1821 log_trim(ent->log, ent); 1822 } 1823 savelog(ent->log, file1); 1824 /* 1825 * Interval-based rotations are done using the mtime of 1826 * the most recently archived log, so make sure it gets 1827 * updated during a rotation. 1828 */ 1829 utimes(file1, NULL); 1830 } 1831 change_attrs(file1, ent); 1832 } 1833 1834 /* Create the new log file and move it into place */ 1835 if (noaction) 1836 printf("Start new log...\n"); 1837 createlog(ent); 1838 1839 /* 1840 * Save all signalling and file-compression to be done after log 1841 * files from all entries have been rotated. This way any one 1842 * process will not be sent the same signal multiple times when 1843 * multiple log files had to be rotated. 1844 */ 1845 swork = NULL; 1846 if (ent->pid_cmd_file != NULL) 1847 swork = save_sigwork(ent); 1848 if (ent->numlogs > 0 && ent->compress > COMPRESS_NONE) { 1849 /* 1850 * The zipwork_entry will include a pointer to this 1851 * conf_entry, so the conf_entry should not be freed. 1852 */ 1853 free_or_keep = KEEP_ENT; 1854 save_zipwork(ent, swork, ent->fsize, file1); 1855 } 1856 1857 return (free_or_keep); 1858} 1859 1860static void 1861do_sigwork(struct sigwork_entry *swork) 1862{ 1863 struct sigwork_entry *nextsig; 1864 int kres, secs; 1865 char *tmp; 1866 1867 if (swork->sw_runcmd == 0 && (!(swork->sw_pidok) || swork->sw_pid == 0)) 1868 return; /* no work to do... */ 1869 1870 /* 1871 * If nosignal (-s) was specified, then do not signal any process. 1872 * Note that a nosignal request triggers a warning message if the 1873 * rotated logfile needs to be compressed, *unless* -R was also 1874 * specified. We assume that an `-sR' request came from a process 1875 * which writes to the logfile, and as such, we assume that process 1876 * has already made sure the logfile is not presently in use. This 1877 * just sets swork->sw_pidok to a special value, and do_zipwork 1878 * will print any necessary warning(s). 1879 */ 1880 if (nosignal) { 1881 if (!rotatereq) 1882 swork->sw_pidok = -1; 1883 return; 1884 } 1885 1886 /* 1887 * Compute the pause between consecutive signals. Use a longer 1888 * sleep time if we will be sending two signals to the same 1889 * deamon or process-group. 1890 */ 1891 secs = 0; 1892 nextsig = SLIST_NEXT(swork, sw_nextp); 1893 if (nextsig != NULL) { 1894 if (swork->sw_pid == nextsig->sw_pid) 1895 secs = 10; 1896 else 1897 secs = 1; 1898 } 1899 1900 if (noaction) { 1901 if (swork->sw_runcmd) 1902 printf("\tsh -c '%s %d'\n", swork->sw_fname, 1903 swork->sw_signum); 1904 else { 1905 printf("\tkill -%d %d \t\t# %s\n", swork->sw_signum, 1906 (int)swork->sw_pid, swork->sw_fname); 1907 if (secs > 0) 1908 printf("\tsleep %d\n", secs); 1909 } 1910 return; 1911 } 1912 1913 if (swork->sw_runcmd) { 1914 asprintf(&tmp, "%s %d", swork->sw_fname, swork->sw_signum); 1915 if (tmp == NULL) { 1916 warn("can't allocate memory to run %s", 1917 swork->sw_fname); 1918 return; 1919 } 1920 if (verbose) 1921 printf("Run command: %s\n", tmp); 1922 kres = system(tmp); 1923 if (kres) { 1924 warnx("%s: returned non-zero exit code: %d", 1925 tmp, kres); 1926 } 1927 free(tmp); 1928 return; 1929 } 1930 1931 kres = kill(swork->sw_pid, swork->sw_signum); 1932 if (kres != 0) { 1933 /* 1934 * Assume that "no such process" (ESRCH) is something 1935 * to warn about, but is not an error. Presumably the 1936 * process which writes to the rotated log file(s) is 1937 * gone, in which case we should have no problem with 1938 * compressing the rotated log file(s). 1939 */ 1940 if (errno != ESRCH) 1941 swork->sw_pidok = 0; 1942 warn("can't notify %s, pid %d", swork->sw_pidtype, 1943 (int)swork->sw_pid); 1944 } else { 1945 if (verbose) 1946 printf("Notified %s pid %d = %s\n", swork->sw_pidtype, 1947 (int)swork->sw_pid, swork->sw_fname); 1948 if (secs > 0) { 1949 if (verbose) 1950 printf("Pause %d second(s) between signals\n", 1951 secs); 1952 sleep(secs); 1953 } 1954 } 1955} 1956 1957static void 1958do_zipwork(struct zipwork_entry *zwork) 1959{ 1960 const char *pgm_name, *pgm_path; 1961 int errsav, fcount, zstatus; 1962 pid_t pidzip, wpid; 1963 char zresult[MAXPATHLEN]; 1964 int c; 1965 1966 assert(zwork != NULL); 1967 pgm_path = NULL; 1968 strlcpy(zresult, zwork->zw_fname, sizeof(zresult)); 1969 if (zwork->zw_conf != NULL && 1970 zwork->zw_conf->compress > COMPRESS_NONE) 1971 for (c = 1; c < COMPRESS_TYPES; c++) { 1972 if (zwork->zw_conf->compress == c) { 1973 pgm_path = compress_type[c].path; 1974 (void) strlcat(zresult, 1975 compress_type[c].suffix, sizeof(zresult)); 1976 break; 1977 } 1978 } 1979 if (pgm_path == NULL) { 1980 warnx("invalid entry for %s in do_zipwork", zwork->zw_fname); 1981 return; 1982 } 1983 pgm_name = strrchr(pgm_path, '/'); 1984 if (pgm_name == NULL) 1985 pgm_name = pgm_path; 1986 else 1987 pgm_name++; 1988 1989 if (zwork->zw_swork != NULL && zwork->zw_swork->sw_runcmd == 0 && 1990 zwork->zw_swork->sw_pidok <= 0) { 1991 warnx( 1992 "log %s not compressed because daemon(s) not notified", 1993 zwork->zw_fname); 1994 change_attrs(zwork->zw_fname, zwork->zw_conf); 1995 return; 1996 } 1997 1998 if (noaction) { 1999 printf("\t%s %s\n", pgm_name, zwork->zw_fname); 2000 change_attrs(zresult, zwork->zw_conf); 2001 return; 2002 } 2003 2004 fcount = 1; 2005 pidzip = fork(); 2006 while (pidzip < 0) { 2007 /* 2008 * The fork failed. If the failure was due to a temporary 2009 * problem, then wait a short time and try it again. 2010 */ 2011 errsav = errno; 2012 warn("fork() for `%s %s'", pgm_name, zwork->zw_fname); 2013 if (errsav != EAGAIN || fcount > 5) 2014 errx(1, "Exiting..."); 2015 sleep(fcount * 12); 2016 fcount++; 2017 pidzip = fork(); 2018 } 2019 if (!pidzip) { 2020 /* The child process executes the compression command */ 2021 execl(pgm_path, pgm_path, "-f", zwork->zw_fname, (char *)0); 2022 err(1, "execl(`%s -f %s')", pgm_path, zwork->zw_fname); 2023 } 2024 2025 wpid = waitpid(pidzip, &zstatus, 0); 2026 if (wpid == -1) { 2027 /* XXX - should this be a fatal error? */ 2028 warn("%s: waitpid(%d)", pgm_path, pidzip); 2029 return; 2030 } 2031 if (!WIFEXITED(zstatus)) { 2032 warnx("`%s -f %s' did not terminate normally", pgm_name, 2033 zwork->zw_fname); 2034 return; 2035 } 2036 if (WEXITSTATUS(zstatus)) { 2037 warnx("`%s -f %s' terminated with a non-zero status (%d)", 2038 pgm_name, zwork->zw_fname, WEXITSTATUS(zstatus)); 2039 return; 2040 } 2041 2042 /* Compression was successful, set file attributes on the result. */ 2043 change_attrs(zresult, zwork->zw_conf); 2044} 2045 2046/* 2047 * Save information on any process we need to signal. Any single 2048 * process may need to be sent different signal-values for different 2049 * log files, but usually a single signal-value will cause the process 2050 * to close and re-open all of it's log files. 2051 */ 2052static struct sigwork_entry * 2053save_sigwork(const struct conf_entry *ent) 2054{ 2055 struct sigwork_entry *sprev, *stmp; 2056 int ndiff; 2057 size_t tmpsiz; 2058 2059 sprev = NULL; 2060 ndiff = 1; 2061 SLIST_FOREACH(stmp, &swhead, sw_nextp) { 2062 ndiff = strcmp(ent->pid_cmd_file, stmp->sw_fname); 2063 if (ndiff > 0) 2064 break; 2065 if (ndiff == 0) { 2066 if (ent->sig == stmp->sw_signum) 2067 break; 2068 if (ent->sig > stmp->sw_signum) { 2069 ndiff = 1; 2070 break; 2071 } 2072 } 2073 sprev = stmp; 2074 } 2075 if (stmp != NULL && ndiff == 0) 2076 return (stmp); 2077 2078 tmpsiz = sizeof(struct sigwork_entry) + strlen(ent->pid_cmd_file) + 1; 2079 stmp = malloc(tmpsiz); 2080 2081 stmp->sw_runcmd = 0; 2082 /* If this is a command to run we just set the flag and run command */ 2083 if (ent->flags & CE_PID2CMD) { 2084 stmp->sw_pid = -1; 2085 stmp->sw_pidok = 0; 2086 stmp->sw_runcmd = 1; 2087 } else { 2088 set_swpid(stmp, ent); 2089 } 2090 stmp->sw_signum = ent->sig; 2091 strcpy(stmp->sw_fname, ent->pid_cmd_file); 2092 if (sprev == NULL) 2093 SLIST_INSERT_HEAD(&swhead, stmp, sw_nextp); 2094 else 2095 SLIST_INSERT_AFTER(sprev, stmp, sw_nextp); 2096 return (stmp); 2097} 2098 2099/* 2100 * Save information on any file we need to compress. We may see the same 2101 * file multiple times, so check the full list to avoid duplicates. The 2102 * list itself is sorted smallest-to-largest, because that's the order we 2103 * want to compress the files. If the partition is very low on disk space, 2104 * then the smallest files are the most likely to compress, and compressing 2105 * them first will free up more space for the larger files. 2106 */ 2107static struct zipwork_entry * 2108save_zipwork(const struct conf_entry *ent, const struct sigwork_entry *swork, 2109 int zsize, const char *zipfname) 2110{ 2111 struct zipwork_entry *zprev, *ztmp; 2112 int ndiff; 2113 size_t tmpsiz; 2114 2115 /* Compute the size if the caller did not know it. */ 2116 if (zsize < 0) 2117 zsize = sizefile(zipfname); 2118 2119 zprev = NULL; 2120 ndiff = 1; 2121 SLIST_FOREACH(ztmp, &zwhead, zw_nextp) { 2122 ndiff = strcmp(zipfname, ztmp->zw_fname); 2123 if (ndiff == 0) 2124 break; 2125 if (zsize > ztmp->zw_fsize) 2126 zprev = ztmp; 2127 } 2128 if (ztmp != NULL && ndiff == 0) 2129 return (ztmp); 2130 2131 tmpsiz = sizeof(struct zipwork_entry) + strlen(zipfname) + 1; 2132 ztmp = malloc(tmpsiz); 2133 ztmp->zw_conf = ent; 2134 ztmp->zw_swork = swork; 2135 ztmp->zw_fsize = zsize; 2136 strcpy(ztmp->zw_fname, zipfname); 2137 if (zprev == NULL) 2138 SLIST_INSERT_HEAD(&zwhead, ztmp, zw_nextp); 2139 else 2140 SLIST_INSERT_AFTER(zprev, ztmp, zw_nextp); 2141 return (ztmp); 2142} 2143 2144/* Send a signal to the pid specified by pidfile */ 2145static void 2146set_swpid(struct sigwork_entry *swork, const struct conf_entry *ent) 2147{ 2148 FILE *f; 2149 long minok, maxok, rval; 2150 char *endp, *linep, line[BUFSIZ]; 2151 2152 minok = MIN_PID; 2153 maxok = MAX_PID; 2154 swork->sw_pidok = 0; 2155 swork->sw_pid = 0; 2156 swork->sw_pidtype = "daemon"; 2157 if (ent->flags & CE_SIGNALGROUP) { 2158 /* 2159 * If we are expected to signal a process-group when 2160 * rotating this logfile, then the value read in should 2161 * be the negative of a valid process ID. 2162 */ 2163 minok = -MAX_PID; 2164 maxok = -MIN_PID; 2165 swork->sw_pidtype = "process-group"; 2166 } 2167 2168 f = fopen(ent->pid_cmd_file, "r"); 2169 if (f == NULL) { 2170 if (errno == ENOENT && enforcepid == 0) { 2171 /* 2172 * Warn if the PID file doesn't exist, but do 2173 * not consider it an error. Most likely it 2174 * means the process has been terminated, 2175 * so it should be safe to rotate any log 2176 * files that the process would have been using. 2177 */ 2178 swork->sw_pidok = 1; 2179 warnx("pid file doesn't exist: %s", ent->pid_cmd_file); 2180 } else 2181 warn("can't open pid file: %s", ent->pid_cmd_file); 2182 return; 2183 } 2184 2185 if (fgets(line, BUFSIZ, f) == NULL) { 2186 /* 2187 * Warn if the PID file is empty, but do not consider 2188 * it an error. Most likely it means the process has 2189 * has terminated, so it should be safe to rotate any 2190 * log files that the process would have been using. 2191 */ 2192 if (feof(f) && enforcepid == 0) { 2193 swork->sw_pidok = 1; 2194 warnx("pid/cmd file is empty: %s", ent->pid_cmd_file); 2195 } else 2196 warn("can't read from pid file: %s", ent->pid_cmd_file); 2197 (void)fclose(f); 2198 return; 2199 } 2200 (void)fclose(f); 2201 2202 errno = 0; 2203 linep = line; 2204 while (*linep == ' ') 2205 linep++; 2206 rval = strtol(linep, &endp, 10); 2207 if (*endp != '\0' && !isspacech(*endp)) { 2208 warnx("pid file does not start with a valid number: %s", 2209 ent->pid_cmd_file); 2210 } else if (rval < minok || rval > maxok) { 2211 warnx("bad value '%ld' for process number in %s", 2212 rval, ent->pid_cmd_file); 2213 if (verbose) 2214 warnx("\t(expecting value between %ld and %ld)", 2215 minok, maxok); 2216 } else { 2217 swork->sw_pidok = 1; 2218 swork->sw_pid = rval; 2219 } 2220 2221 return; 2222} 2223 2224/* Log the fact that the logs were turned over */ 2225static int 2226log_trim(const char *logname, const struct conf_entry *log_ent) 2227{ 2228 FILE *f; 2229 const char *xtra; 2230 2231 if ((f = fopen(logname, "a")) == NULL) 2232 return (-1); 2233 xtra = ""; 2234 if (log_ent->def_cfg) 2235 xtra = " using <default> rule"; 2236 if (log_ent->firstcreate) 2237 fprintf(f, "%s %s newsyslog[%d]: logfile first created%s\n", 2238 daytime, hostname, (int) getpid(), xtra); 2239 else if (log_ent->r_reason != NULL) 2240 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s%s\n", 2241 daytime, hostname, (int) getpid(), log_ent->r_reason, xtra); 2242 else 2243 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s\n", 2244 daytime, hostname, (int) getpid(), xtra); 2245 if (fclose(f) == EOF) 2246 err(1, "log_trim: fclose"); 2247 return (0); 2248} 2249 2250/* Return size in kilobytes of a file */ 2251static int 2252sizefile(const char *file) 2253{ 2254 struct stat sb; 2255 2256 if (stat(file, &sb) < 0) 2257 return (-1); 2258 return (kbytes(dbtob(sb.st_blocks))); 2259} 2260 2261/* Return the age of old log file (file.0) */ 2262static int 2263age_old_log(char *file) 2264{ 2265 struct stat sb; 2266 const char *logfile_suffix; 2267 char tmp[MAXPATHLEN + sizeof(".0") + COMPRESS_SUFFIX_MAXLEN + 1]; 2268 2269 if (archtodir) { 2270 char *p; 2271 2272 /* build name of archive directory into tmp */ 2273 if (*archdirname == '/') { /* absolute */ 2274 strlcpy(tmp, archdirname, sizeof(tmp)); 2275 } else { /* relative */ 2276 /* get directory part of logfile */ 2277 strlcpy(tmp, file, sizeof(tmp)); 2278 if ((p = rindex(tmp, '/')) == NULL) 2279 tmp[0] = '\0'; 2280 else 2281 *(p + 1) = '\0'; 2282 strlcat(tmp, archdirname, sizeof(tmp)); 2283 } 2284 2285 strlcat(tmp, "/", sizeof(tmp)); 2286 2287 /* get filename part of logfile */ 2288 if ((p = rindex(file, '/')) == NULL) 2289 strlcat(tmp, file, sizeof(tmp)); 2290 else 2291 strlcat(tmp, p + 1, sizeof(tmp)); 2292 } else { 2293 (void) strlcpy(tmp, file, sizeof(tmp)); 2294 } 2295 2296 strlcat(tmp, ".0", sizeof(tmp)); 2297 logfile_suffix = get_logfile_suffix(tmp); 2298 if (logfile_suffix == NULL) 2299 return (-1); 2300 (void) strlcat(tmp, logfile_suffix, sizeof(tmp)); 2301 if (stat(tmp, &sb) < 0) 2302 return (-1); 2303 return ((int)(ptimeget_secs(timenow) - sb.st_mtime + 1800) / 3600); 2304} 2305 2306/* Skip Over Blanks */ 2307static char * 2308sob(char *p) 2309{ 2310 while (p && *p && isspace(*p)) 2311 p++; 2312 return (p); 2313} 2314 2315/* Skip Over Non-Blanks */ 2316static char * 2317son(char *p) 2318{ 2319 while (p && *p && !isspace(*p)) 2320 p++; 2321 return (p); 2322} 2323 2324/* Check if string is actually a number */ 2325static int 2326isnumberstr(const char *string) 2327{ 2328 while (*string) { 2329 if (!isdigitch(*string++)) 2330 return (0); 2331 } 2332 return (1); 2333} 2334 2335/* Check if string contains a glob */ 2336static int 2337isglobstr(const char *string) 2338{ 2339 char chr; 2340 2341 while ((chr = *string++)) { 2342 if (chr == '*' || chr == '?' || chr == '[') 2343 return (1); 2344 } 2345 return (0); 2346} 2347 2348/* 2349 * Save the active log file under a new name. A link to the new name 2350 * is the quick-and-easy way to do this. If that fails (which it will 2351 * if the destination is on another partition), then make a copy of 2352 * the file to the new location. 2353 */ 2354static void 2355savelog(char *from, char *to) 2356{ 2357 FILE *src, *dst; 2358 int c, res; 2359 2360 res = link(from, to); 2361 if (res == 0) 2362 return; 2363 2364 if ((src = fopen(from, "r")) == NULL) 2365 err(1, "can't fopen %s for reading", from); 2366 if ((dst = fopen(to, "w")) == NULL) 2367 err(1, "can't fopen %s for writing", to); 2368 2369 while ((c = getc(src)) != EOF) { 2370 if ((putc(c, dst)) == EOF) 2371 err(1, "error writing to %s", to); 2372 } 2373 2374 if (ferror(src)) 2375 err(1, "error reading from %s", from); 2376 if ((fclose(src)) != 0) 2377 err(1, "can't fclose %s", to); 2378 if ((fclose(dst)) != 0) 2379 err(1, "can't fclose %s", from); 2380} 2381 2382/* create one or more directory components of a path */ 2383static void 2384createdir(const struct conf_entry *ent, char *dirpart) 2385{ 2386 int res; 2387 char *s, *d; 2388 char mkdirpath[MAXPATHLEN]; 2389 struct stat st; 2390 2391 s = dirpart; 2392 d = mkdirpath; 2393 2394 for (;;) { 2395 *d++ = *s++; 2396 if (*s != '/' && *s != '\0') 2397 continue; 2398 *d = '\0'; 2399 res = lstat(mkdirpath, &st); 2400 if (res != 0) { 2401 if (noaction) { 2402 printf("\tmkdir %s\n", mkdirpath); 2403 } else { 2404 res = mkdir(mkdirpath, 0755); 2405 if (res != 0) 2406 err(1, "Error on mkdir(\"%s\") for -a", 2407 mkdirpath); 2408 } 2409 } 2410 if (*s == '\0') 2411 break; 2412 } 2413 if (verbose) { 2414 if (ent->firstcreate) 2415 printf("Created directory '%s' for new %s\n", 2416 dirpart, ent->log); 2417 else 2418 printf("Created directory '%s' for -a\n", dirpart); 2419 } 2420} 2421 2422/* 2423 * Create a new log file, destroying any currently-existing version 2424 * of the log file in the process. If the caller wants a backup copy 2425 * of the file to exist, they should call 'link(logfile,logbackup)' 2426 * before calling this routine. 2427 */ 2428void 2429createlog(const struct conf_entry *ent) 2430{ 2431 int fd, failed; 2432 struct stat st; 2433 char *realfile, *slash, tempfile[MAXPATHLEN]; 2434 2435 fd = -1; 2436 realfile = ent->log; 2437 2438 /* 2439 * If this log file is being created for the first time (-C option), 2440 * then it may also be true that the parent directory does not exist 2441 * yet. Check, and create that directory if it is missing. 2442 */ 2443 if (ent->firstcreate) { 2444 strlcpy(tempfile, realfile, sizeof(tempfile)); 2445 slash = strrchr(tempfile, '/'); 2446 if (slash != NULL) { 2447 *slash = '\0'; 2448 failed = stat(tempfile, &st); 2449 if (failed && errno != ENOENT) 2450 err(1, "Error on stat(%s)", tempfile); 2451 if (failed) 2452 createdir(ent, tempfile); 2453 else if (!S_ISDIR(st.st_mode)) 2454 errx(1, "%s exists but is not a directory", 2455 tempfile); 2456 } 2457 } 2458 2459 /* 2460 * First create an unused filename, so it can be chown'ed and 2461 * chmod'ed before it is moved into the real location. mkstemp 2462 * will create the file mode=600 & owned by us. Note that all 2463 * temp files will have a suffix of '.z<something>'. 2464 */ 2465 strlcpy(tempfile, realfile, sizeof(tempfile)); 2466 strlcat(tempfile, ".zXXXXXX", sizeof(tempfile)); 2467 if (noaction) 2468 printf("\tmktemp %s\n", tempfile); 2469 else { 2470 fd = mkstemp(tempfile); 2471 if (fd < 0) 2472 err(1, "can't mkstemp logfile %s", tempfile); 2473 2474 /* 2475 * Add status message to what will become the new log file. 2476 */ 2477 if (!(ent->flags & CE_BINARY)) { 2478 if (log_trim(tempfile, ent)) 2479 err(1, "can't add status message to log"); 2480 } 2481 } 2482 2483 /* Change the owner/group, if we are supposed to */ 2484 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) { 2485 if (noaction) 2486 printf("\tchown %u:%u %s\n", ent->uid, ent->gid, 2487 tempfile); 2488 else { 2489 failed = fchown(fd, ent->uid, ent->gid); 2490 if (failed) 2491 err(1, "can't fchown temp file %s", tempfile); 2492 } 2493 } 2494 2495 /* Turn on NODUMP if it was requested in the config-file. */ 2496 if (ent->flags & CE_NODUMP) { 2497 if (noaction) 2498 printf("\tchflags nodump %s\n", tempfile); 2499 else { 2500 failed = fchflags(fd, UF_NODUMP); 2501 if (failed) { 2502 warn("log_trim: fchflags(NODUMP)"); 2503 } 2504 } 2505 } 2506 2507 /* 2508 * Note that if the real logfile still exists, and if the call 2509 * to rename() fails, then "neither the old file nor the new 2510 * file shall be changed or created" (to quote the standard). 2511 * If the call succeeds, then the file will be replaced without 2512 * any window where some other process might find that the file 2513 * did not exist. 2514 * XXX - ? It may be that for some error conditions, we could 2515 * retry by first removing the realfile and then renaming. 2516 */ 2517 if (noaction) { 2518 printf("\tchmod %o %s\n", ent->permissions, tempfile); 2519 printf("\tmv %s %s\n", tempfile, realfile); 2520 } else { 2521 failed = fchmod(fd, ent->permissions); 2522 if (failed) 2523 err(1, "can't fchmod temp file '%s'", tempfile); 2524 failed = rename(tempfile, realfile); 2525 if (failed) 2526 err(1, "can't mv %s to %s", tempfile, realfile); 2527 } 2528 2529 if (fd >= 0) 2530 close(fd); 2531} 2532 2533/* 2534 * Change the attributes of a given filename to what was specified in 2535 * the newsyslog.conf entry. This routine is only called for files 2536 * that newsyslog expects that it has created, and thus it is a fatal 2537 * error if this routine finds that the file does not exist. 2538 */ 2539static void 2540change_attrs(const char *fname, const struct conf_entry *ent) 2541{ 2542 int failed; 2543 2544 if (noaction) { 2545 printf("\tchmod %o %s\n", ent->permissions, fname); 2546 2547 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) 2548 printf("\tchown %u:%u %s\n", 2549 ent->uid, ent->gid, fname); 2550 2551 if (ent->flags & CE_NODUMP) 2552 printf("\tchflags nodump %s\n", fname); 2553 return; 2554 } 2555 2556 failed = chmod(fname, ent->permissions); 2557 if (failed) { 2558 if (errno != EPERM) 2559 err(1, "chmod(%s) in change_attrs", fname); 2560 warn("change_attrs couldn't chmod(%s)", fname); 2561 } 2562 2563 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) { 2564 failed = chown(fname, ent->uid, ent->gid); 2565 if (failed) 2566 warn("can't chown %s", fname); 2567 } 2568 2569 if (ent->flags & CE_NODUMP) { 2570 failed = chflags(fname, UF_NODUMP); 2571 if (failed) 2572 warn("can't chflags %s NODUMP", fname); 2573 } 2574} 2575