601 lines
19 KiB
C
601 lines
19 KiB
C
/*
|
|
* This file contains changes from the Open Software Foundation.
|
|
* The RCS history log will appear at the end of this file.
|
|
* @(#)newsyslog.c $Revision: 1.1 $ $Date: 1993/05/21 14:44:02 $ $Locker: $
|
|
*/
|
|
|
|
/*
|
|
|
|
Copyright 1991 by the Massachusetts Institute of Technology
|
|
|
|
All rights reserved.
|
|
|
|
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 name of the Massachusetts
|
|
Institute of Technology (M.I.T.) not be used in advertising or publicity
|
|
pertaining to distribution of the software without specific, written
|
|
prior permission.
|
|
|
|
M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
|
|
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
|
|
M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
|
|
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
|
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
|
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
SOFTWARE.
|
|
|
|
*/
|
|
|
|
/*
|
|
* newsyslog - roll over selected logs at the appropriate time,
|
|
* keeping the a specified number of backup files around.
|
|
*
|
|
* $Source: /cvsroot/src/usr.bin/newsyslog/newsyslog.c,v $
|
|
* $Author: cgd $
|
|
*/
|
|
|
|
#if !defined(lint) && !defined(_NOIDENT)
|
|
static char rcsid[] = "@(#)$RCSfile: newsyslog.c,v $ $Revision: 1.1 $ (OSF) $Date: 1993/05/21 14:44:02 $";
|
|
#endif
|
|
|
|
#ifndef CONF
|
|
#define CONF "/etc/athena/newsyslog.conf" /* Configuration file */
|
|
#endif
|
|
#ifndef PIDFILE
|
|
#define PIDFILE "/etc/syslog.pid"
|
|
#endif
|
|
#ifndef COMPRESS
|
|
#define COMPRESS "/usr/ucb/compress" /* File compression program */
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <strings.h>
|
|
#include <ctype.h>
|
|
#include <signal.h>
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/param.h>
|
|
#include <sys/wait.h>
|
|
|
|
#define kbytes(size) (((size) + 1023) >> 10)
|
|
#ifdef _IBMR2
|
|
/* Calculates (db * DEV_BSIZE) */
|
|
#define dbtob(db) ((unsigned)(db) << UBSHIFT)
|
|
#endif
|
|
|
|
#define CE_COMPACT 1 /* Compact the achived log files */
|
|
#define CE_BINARY 2 /* Logfile is in binary, don't add */
|
|
/* status messages */
|
|
#define NONE -1
|
|
|
|
struct conf_entry {
|
|
char *log; /* Name of the log */
|
|
int uid; /* Owner of log */
|
|
int gid; /* Group of log */
|
|
int numlogs; /* Number of logs to keep */
|
|
int size; /* Size cutoff to trigger trimming the log */
|
|
int hours; /* Hours between log trimming */
|
|
int permissions; /* File permissions on the log */
|
|
int flags; /* Flags (CE_COMPACT & CE_BINARY) */
|
|
struct conf_entry *next; /* Linked list pointer */
|
|
};
|
|
|
|
extern int optind;
|
|
extern char *optarg;
|
|
extern char *malloc();
|
|
extern uid_t getuid(),geteuid();
|
|
extern time_t time();
|
|
|
|
char *progname; /* contains argv[0] */
|
|
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 */
|
|
char *conf = CONF; /* Configuration file to use */
|
|
time_t timenow;
|
|
int syslog_pid; /* read in from /etc/syslog.pid */
|
|
char hostname[64]; /* hostname */
|
|
char *daytime; /* timenow in human readable form */
|
|
|
|
|
|
struct conf_entry *parse_file();
|
|
char *sob(), *son(), *strdup(), *missing_field();
|
|
|
|
main(argc,argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
struct conf_entry *p, *q;
|
|
|
|
PRS(argc,argv);
|
|
if (needroot && getuid() && geteuid()) {
|
|
fprintf(stderr,"%s: must have root privs\n",progname);
|
|
exit(1);
|
|
}
|
|
p = q = parse_file();
|
|
while (p) {
|
|
do_entry(p);
|
|
p=p->next;
|
|
free((char *) q);
|
|
q=p;
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
do_entry(ent)
|
|
struct conf_entry *ent;
|
|
|
|
{
|
|
int size, modtime;
|
|
|
|
if (verbose) {
|
|
if (ent->flags & CE_COMPACT)
|
|
printf("%s <%dZ>: ",ent->log,ent->numlogs);
|
|
else
|
|
printf("%s <%d>: ",ent->log,ent->numlogs);
|
|
}
|
|
size = sizefile(ent->log);
|
|
modtime = age_old_log(ent->log);
|
|
if (size < 0) {
|
|
if (verbose)
|
|
printf("does not exist.\n");
|
|
} else {
|
|
if (verbose && (ent->size > 0))
|
|
printf("size (Kb): %d [%d] ", size, ent->size);
|
|
if (verbose && (ent->hours > 0))
|
|
printf(" age (hr): %d [%d] ", modtime, ent->hours);
|
|
if (((ent->size > 0) && (size >= ent->size)) ||
|
|
((ent->hours > 0) && ((modtime >= ent->hours)
|
|
|| (modtime < 0)))) {
|
|
if (verbose)
|
|
printf("--> trimming log....\n");
|
|
if (noaction && !verbose) {
|
|
if (ent->flags & CE_COMPACT)
|
|
printf("%s <%dZ>: trimming",
|
|
ent->log,ent->numlogs);
|
|
else
|
|
printf("%s <%d>: trimming",
|
|
ent->log,ent->numlogs);
|
|
}
|
|
dotrim(ent->log, ent->numlogs, ent->flags,
|
|
ent->permissions, ent->uid, ent->gid);
|
|
} else {
|
|
if (verbose)
|
|
printf("--> skipping\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
PRS(argc,argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int c;
|
|
FILE *f;
|
|
char line[BUFSIZ];
|
|
|
|
progname = argv[0];
|
|
timenow = time((time_t *) 0);
|
|
daytime = ctime(&timenow);
|
|
daytime[strlen(daytime)-1] = '\0';
|
|
|
|
/* Let's find the pid of syslogd */
|
|
syslog_pid = 0;
|
|
f = fopen(PIDFILE,"r");
|
|
if (f && fgets(line,BUFSIZ,f))
|
|
syslog_pid = atoi(line);
|
|
|
|
/* Let's get our hostname */
|
|
if (gethostname(hostname, 64)) {
|
|
perror("gethostname");
|
|
(void) strcpy(hostname,"Mystery Host");
|
|
}
|
|
|
|
optind = 1; /* Start options parsing */
|
|
while ((c=getopt(argc,argv,"nrvf:t:")) != EOF)
|
|
switch (c) {
|
|
case 'n':
|
|
noaction++; /* This implies needroot as off */
|
|
/* fall through */
|
|
case 'r':
|
|
needroot = 0;
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'f':
|
|
conf = optarg;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
usage()
|
|
{
|
|
fprintf(stderr,
|
|
"Usage: %s <-nrv> <-f config-file>\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* Parse a configuration file and return a linked list of all the logs
|
|
* to process
|
|
*/
|
|
struct conf_entry *parse_file()
|
|
{
|
|
FILE *f;
|
|
char line[BUFSIZ], *parse, *q;
|
|
char *errline, *group;
|
|
struct conf_entry *first = NULL;
|
|
struct conf_entry *working;
|
|
struct passwd *pass;
|
|
struct group *grp;
|
|
|
|
if (strcmp(conf,"-"))
|
|
f = fopen(conf,"r");
|
|
else
|
|
f = stdin;
|
|
if (!f) {
|
|
(void) fprintf(stderr,"%s: ",progname);
|
|
perror(conf);
|
|
exit(1);
|
|
}
|
|
while (fgets(line,BUFSIZ,f)) {
|
|
if ((line[0]== '\n') || (line[0] == '#'))
|
|
continue;
|
|
errline = strdup(line);
|
|
if (!first) {
|
|
working = (struct conf_entry *) malloc(sizeof(struct conf_entry));
|
|
first = working;
|
|
} else {
|
|
working->next = (struct conf_entry *) malloc(sizeof(struct conf_entry));
|
|
working = working->next;
|
|
}
|
|
|
|
q = parse = missing_field(sob(line),errline);
|
|
*(parse = son(line)) = '\0';
|
|
working->log = strdup(q);
|
|
|
|
q = parse = missing_field(sob(++parse),errline);
|
|
*(parse = son(parse)) = '\0';
|
|
if ((group = index(q, '.')) != NULL) {
|
|
*group++ = '\0';
|
|
if (*q) {
|
|
if (!(isnumber(q))) {
|
|
if ((pass = getpwnam(q)) == NULL) {
|
|
fprintf(stderr,
|
|
"Error in config file; unknown user:\n");
|
|
fputs(errline,stderr);
|
|
exit(1);
|
|
}
|
|
working->uid = pass->pw_uid;
|
|
} else
|
|
working->uid = atoi(q);
|
|
} else
|
|
working->uid = NONE;
|
|
|
|
q = group;
|
|
if (*q) {
|
|
if (!(isnumber(q))) {
|
|
if ((grp = getgrnam(q)) == NULL) {
|
|
fprintf(stderr,
|
|
"Error in config file; unknown group:\n");
|
|
fputs(errline,stderr);
|
|
exit(1);
|
|
}
|
|
working->gid = grp->gr_gid;
|
|
} else
|
|
working->gid = atoi(q);
|
|
} else
|
|
working->gid = NONE;
|
|
|
|
q = parse = missing_field(sob(++parse),errline);
|
|
*(parse = son(parse)) = '\0';
|
|
}
|
|
else
|
|
working->uid = working->gid = NONE;
|
|
|
|
if (!sscanf(q,"%o",&working->permissions)) {
|
|
fprintf(stderr,
|
|
"Error in config file; bad permissions:\n");
|
|
fputs(errline,stderr);
|
|
exit(1);
|
|
}
|
|
|
|
q = parse = missing_field(sob(++parse),errline);
|
|
*(parse = son(parse)) = '\0';
|
|
if (!sscanf(q,"%d",&working->numlogs)) {
|
|
fprintf(stderr,
|
|
"Error in config file; bad number:\n");
|
|
fputs(errline,stderr);
|
|
exit(1);
|
|
}
|
|
|
|
q = parse = missing_field(sob(++parse),errline);
|
|
*(parse = son(parse)) = '\0';
|
|
if (isdigit(*q))
|
|
working->size = atoi(q);
|
|
else
|
|
working->size = -1;
|
|
|
|
q = parse = missing_field(sob(++parse),errline);
|
|
*(parse = son(parse)) = '\0';
|
|
if (isdigit(*q))
|
|
working->hours = atoi(q);
|
|
else
|
|
working->hours = -1;
|
|
|
|
q = parse = sob(++parse); /* Optional field */
|
|
*(parse = son(parse)) = '\0';
|
|
working->flags = 0;
|
|
while (q && *q && !isspace(*q)) {
|
|
if ((*q == 'Z') || (*q == 'z'))
|
|
working->flags |= CE_COMPACT;
|
|
else if ((*q == 'B') || (*q == 'b'))
|
|
working->flags |= CE_BINARY;
|
|
else {
|
|
fprintf(stderr,
|
|
"Illegal flag in config file -- %c\n",
|
|
*q);
|
|
exit(1);
|
|
}
|
|
q++;
|
|
}
|
|
|
|
free(errline);
|
|
}
|
|
if (working)
|
|
working->next = (struct conf_entry *) NULL;
|
|
(void) fclose(f);
|
|
return(first);
|
|
}
|
|
|
|
char *missing_field(p,errline)
|
|
char *p,*errline;
|
|
{
|
|
if (!p || !*p) {
|
|
fprintf(stderr,"Missing field in config file:\n");
|
|
fputs(errline,stderr);
|
|
exit(1);
|
|
}
|
|
return(p);
|
|
}
|
|
|
|
dotrim(log,numdays,flags,perm,owner_uid,group_gid)
|
|
char *log;
|
|
int numdays;
|
|
int flags;
|
|
int perm;
|
|
int owner_uid;
|
|
int group_gid;
|
|
{
|
|
char file1[128], file2[128];
|
|
char zfile1[128], zfile2[128];
|
|
int fd;
|
|
struct stat st;
|
|
|
|
#ifdef _IBMR2
|
|
/* AIX 3.1 has a broken fchown- if the owner_uid is -1, it will actually */
|
|
/* change it to be owned by uid -1, instead of leaving it as is, as it is */
|
|
/* supposed to. */
|
|
if (owner_uid == -1)
|
|
owner_uid = geteuid();
|
|
#endif
|
|
|
|
/* Remove oldest log */
|
|
(void) sprintf(file1,"%s.%d",log,numdays);
|
|
(void) strcpy(zfile1, file1);
|
|
(void) strcat(zfile1, ".Z");
|
|
|
|
if (noaction) {
|
|
printf("rm -f %s\n", file1);
|
|
printf("rm -f %s\n", zfile1);
|
|
} else {
|
|
(void) unlink(file1);
|
|
(void) unlink(zfile1);
|
|
}
|
|
|
|
/* Move down log files */
|
|
while (numdays--) {
|
|
(void) strcpy(file2,file1);
|
|
(void) sprintf(file1,"%s.%d",log,numdays);
|
|
(void) strcpy(zfile1, file1);
|
|
(void) strcpy(zfile2, file2);
|
|
if (lstat(file1, &st)) {
|
|
(void) strcat(zfile1, ".Z");
|
|
(void) strcat(zfile2, ".Z");
|
|
if (lstat(zfile1, &st)) continue;
|
|
}
|
|
if (noaction) {
|
|
printf("mv %s %s\n",zfile1,zfile2);
|
|
printf("chmod %o %s\n", perm, zfile2);
|
|
printf("chown %d.%d %s\n",
|
|
owner_uid, group_gid, zfile2);
|
|
} else {
|
|
(void) rename(zfile1, zfile2);
|
|
(void) chmod(zfile2, perm);
|
|
(void) chown(zfile2, owner_uid, group_gid);
|
|
}
|
|
}
|
|
if (!noaction && !(flags & CE_BINARY))
|
|
(void) log_trim(log); /* Report the trimming to the old log */
|
|
|
|
if (noaction)
|
|
printf("mv %s to %s\n",log,file1);
|
|
else
|
|
(void) rename(log,file1);
|
|
if (noaction)
|
|
printf("Start new log...");
|
|
else {
|
|
fd = creat(log,perm);
|
|
if (fd < 0) {
|
|
perror("can't start new log");
|
|
exit(1);
|
|
}
|
|
if (fchown(fd, owner_uid, group_gid)) {
|
|
perror("can't chmod new log file");
|
|
exit(1);
|
|
}
|
|
(void) close(fd);
|
|
if (!(flags & CE_BINARY))
|
|
if (log_trim(log)) { /* Add status message */
|
|
perror("can't add status message to log");
|
|
exit(1);
|
|
}
|
|
}
|
|
if (noaction)
|
|
printf("chmod %o %s...",perm,log);
|
|
else
|
|
(void) chmod(log,perm);
|
|
if (noaction)
|
|
printf("kill -HUP %d (syslogd)\n",syslog_pid);
|
|
else
|
|
if (kill(syslog_pid,SIGHUP)) {
|
|
fprintf(stderr,"%s: ",progname);
|
|
perror("warning - could not restart syslogd");
|
|
}
|
|
if (flags & CE_COMPACT) {
|
|
if (noaction)
|
|
printf("Compress %s.0\n",log);
|
|
else
|
|
compress_log(log);
|
|
}
|
|
}
|
|
|
|
/* Log the fact that the logs were turned over */
|
|
log_trim(log)
|
|
char *log;
|
|
{
|
|
FILE *f;
|
|
if ((f = fopen(log,"a")) == NULL)
|
|
return(-1);
|
|
fprintf(f,"%s %s newsyslog[%d]: logfile turned over\n",
|
|
daytime, hostname, getpid());
|
|
if (fclose(f) == EOF) {
|
|
perror("log_trim: fclose:");
|
|
exit(1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/* Fork of /usr/ucb/compress to compress the old log file */
|
|
compress_log(log)
|
|
char *log;
|
|
{
|
|
int pid;
|
|
char tmp[128];
|
|
|
|
pid = fork();
|
|
(void) sprintf(tmp,"%s.0",log);
|
|
if (pid < 0) {
|
|
fprintf(stderr,"%s: ",progname);
|
|
perror("fork");
|
|
exit(1);
|
|
} else if (!pid) {
|
|
(void) execl(COMPRESS,"compress","-f",tmp,0);
|
|
fprintf(stderr,"%s: ",progname);
|
|
perror(COMPRESS);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Return size in kilobytes of a file */
|
|
int sizefile(file)
|
|
char *file;
|
|
{
|
|
struct stat sb;
|
|
|
|
if (stat(file,&sb) < 0)
|
|
return(-1);
|
|
return(kbytes(dbtob(sb.st_blocks)));
|
|
}
|
|
|
|
/* Return the age of old log file (file.0) */
|
|
int age_old_log(file)
|
|
char *file;
|
|
{
|
|
struct stat sb;
|
|
char tmp[80];
|
|
|
|
(void) strcpy(tmp,file);
|
|
if (stat(strcat(tmp,".0"),&sb) < 0)
|
|
if (stat(strcat(tmp,".Z"), &sb) < 0)
|
|
return(-1);
|
|
return( (int) (timenow - sb.st_mtime + 1800) / 3600);
|
|
}
|
|
|
|
|
|
#ifndef OSF
|
|
/* Duplicate a string using malloc */
|
|
|
|
char *strdup(strp)
|
|
register char *strp;
|
|
{
|
|
register char *cp;
|
|
|
|
if ((cp = malloc((unsigned) strlen(strp) + 1)) == NULL)
|
|
abort();
|
|
return(strcpy (cp, strp));
|
|
}
|
|
#endif
|
|
|
|
/* Skip Over Blanks */
|
|
char *sob(p)
|
|
register char *p;
|
|
{
|
|
while (p && *p && isspace(*p))
|
|
p++;
|
|
return(p);
|
|
}
|
|
|
|
/* Skip Over Non-Blanks */
|
|
char *son(p)
|
|
register char *p;
|
|
{
|
|
while (p && *p && !isspace(*p))
|
|
p++;
|
|
return(p);
|
|
}
|
|
|
|
|
|
/* Check if string is actually a number */
|
|
|
|
isnumber(string)
|
|
char *string;
|
|
{
|
|
while (*string != '\0') {
|
|
if (*string < '0' || *string > '9') return(0);
|
|
string++;
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
#if !defined(__SABER__) && !defined(lint) && !defined(NO_WHAT_STRINGS)
|
|
static char *what_string = "@(#)newsyslog.c\t$Revision: 1.1 $ $Date: 1993/05/21 14:44:02 $ $Locker: $";
|
|
#endif
|
|
|
|
/*
|
|
* HISTORY
|
|
* $Log: newsyslog.c,v $
|
|
* Revision 1.1 1993/05/21 14:44:02 cgd
|
|
* initial import of this log-rotation program to NetBSD
|
|
*
|
|
* Revision 3.0.2.2 1993/02/06 04:14:51 brezak
|
|
* Fix up rcsid.
|
|
* [1993/02/06 04:14:03 brezak]
|
|
*
|
|
* Revision 3.0 1993/01/01 07:39:17 ede
|
|
* Initial revision for OSF/1 R1.3
|
|
*
|
|
* Revision 1.2 1991/08/16 09:50:26 devrcs
|
|
* From John Brezak, brezak@apollo.com, originally from Project Athena
|
|
* [91/07/24 09:33:18 meissner]
|
|
*
|
|
* $EndLog$
|
|
*/
|