diff options
| -rw-r--r-- | libexec/atrun/Makefile | 7 | ||||
| -rw-r--r-- | libexec/atrun/atrun.8 | 69 | ||||
| -rw-r--r-- | libexec/atrun/atrun.c | 492 | ||||
| -rw-r--r-- | libexec/atrun/atrun.h | 35 |
4 files changed, 0 insertions, 603 deletions
diff --git a/libexec/atrun/Makefile b/libexec/atrun/Makefile deleted file mode 100644 index 3289c1813da..00000000000 --- a/libexec/atrun/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# $OpenBSD: Makefile,v 1.3 2001/07/20 21:12:27 mickey Exp $ - -PROG= atrun -CFLAGS+= -I${.CURDIR}/../../usr.bin/at -MAN= atrun.8 - -.include <bsd.prog.mk> diff --git a/libexec/atrun/atrun.8 b/libexec/atrun/atrun.8 deleted file mode 100644 index 86a90ffacdc..00000000000 --- a/libexec/atrun/atrun.8 +++ /dev/null @@ -1,69 +0,0 @@ -.\" $OpenBSD: atrun.8,v 1.10 2001/08/02 18:37:34 mpech Exp $ -.\" $FreeBSD: atrun.man,v 1.3 1997/02/22 14:20:55 peter Exp $ -.Dd April 12, 1995 -.Dt ATRUN 8 -.Os -.Sh NAME -.Nm atrun -.Nd run jobs queued for later execution -.Sh SYNOPSIS -.Nm atrun -.Op Fl l Ar load_avg -.Op Fl d -.Sh DESCRIPTION -.Nm -runs jobs queued by -.Xr at 1 . -Root's -.Xr crontab 5 -must contain the line: -.Bd -literal -offset indent -*/10 * * * * root /usr/libexec/atrun -.Ed -.Pp -so that -.Xr atrun 8 -gets called every ten minutes. -.Pp -At every invocation, every job in lowercase queues whose starting time -has passed is started. -A maximum of one batch job (denoted by uppercase queues) is started -each time -.Nm -is invoked. -.Pp -The options are as follows: -.Bl -tag -width Ds -.It Fl l Ar load_avg -Specifies a limiting load factor, over which batch jobs should -not be run, instead of the compiled-in value of 1.5. -.It Fl d -Debug; print error messages to standard error instead of using -.Xr syslog 3 . -.El -.Sh WARNINGS -For -.Nm -to work, you have to start up a -.Xr cron 8 -daemon. -.Sh FILES -.Bl -tag -width /var/at/spool -compact -.It Pa /var/at/spool -directory containing output spool files -.It Pa /var/at/jobs -directory containing job files -.El -.Sh SEE ALSO -.Xr at 1 , -.Xr crontab 1 , -.Xr syslog 3 , -.Xr crontab 5 , -.Xr cron 8 -.Sh AUTHORS -Thomas Koenig <ig25@rz.uni-karlsruhe.de>. -.Sh BUGS -The functionality of -.Nm -should be merged into -.Xr cron 8 . diff --git a/libexec/atrun/atrun.c b/libexec/atrun/atrun.c deleted file mode 100644 index 08d86ecce3f..00000000000 --- a/libexec/atrun/atrun.c +++ /dev/null @@ -1,492 +0,0 @@ -/* $OpenBSD: atrun.c,v 1.22 2002/06/04 00:09:07 deraadt Exp $ */ - -/* - * atrun.c - run jobs queued by at; run with root privileges. - * Copyright (C) 1993, 1994 Thomas Koenig - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. The name of the author(s) may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* System Headers */ - -#include <sys/fcntl.h> -#include <sys/param.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/wait.h> -#include <ctype.h> -#include <dirent.h> -#include <errno.h> -#include <grp.h> -#include <limits.h> -#include <paths.h> -#include <pwd.h> -#include <signal.h> -#include <stddef.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <syslog.h> -#include <time.h> -#include <unistd.h> -#include <utmp.h> - -#include <login_cap.h> -#include <bsd_auth.h> - -#define MAIN -#include "privs.h" -#include "pathnames.h" -#include "atrun.h" - -#if (MAXLOGNAME-1) > UT_NAMESIZE -#define LOGNAMESIZE UT_NAMESIZE -#else -#define LOGNAMESIZE (MAXLOGNAME-1) -#endif - -static const char rcsid[] = "$OpenBSD: atrun.c,v 1.22 2002/06/04 00:09:07 deraadt Exp $"; -static int debug = 0; - -static void -perr(const char *a) -{ - if (debug) - perror(a); - else - syslog(LOG_ERR, "%s: %m", a); - - exit(EXIT_FAILURE); -} - -static void -perr2(char *a, char *b) -{ - if (debug) { - (void)fputs(a, stderr); - perror(b); - } else - syslog(LOG_ERR, "%s%s: %m", a, b); - - exit(EXIT_FAILURE); -} - -static int -write_string(int fd, const char *a) -{ - return(write(fd, a, strlen(a))); -} - -/* - * Run a file by spawning off a process which redirects I/O, - * spawns a subshell, then waits for it to complete and spawns - * another process to send mail to the user. - */ -static void -run_file(const char *filename, uid_t uid, gid_t gid) -{ - pid_t pid; - int fd_out, fd_in; - int queue; - char mailbuf[LOGNAMESIZE + 1], *fmt; - char *mailname = NULL; - FILE *stream; - int send_mail = 0; - struct stat stbuf; - off_t size; - struct passwd *pw; - int fflags; - uid_t nuid; - gid_t ngid; - login_cap_t *lc; - auth_session_t *as; - - PRIV_START; - - if (chmod(filename, S_IRUSR) != 0) - perr("Cannot change file permissions"); - - PRIV_END; - - pid = fork(); - if (pid == -1) - perr("Cannot fork"); - else if (pid != 0) - return; - - /* - * Let's see who we mail to. Hopefully, we can read it from the - * command file; if not, send it to the owner, or, failing that, to - * root. - */ - pw = getpwuid(uid); - if (pw == NULL) { - syslog(LOG_ERR,"Userid %u not found - aborting job %s", - uid, filename); - exit(EXIT_FAILURE); - } - - as = auth_open(); - if (as == NULL || auth_setpwd(as, pw) != 0) { - syslog(LOG_ERR,"Unable to allocate memory - aborting job %s", - filename); - exit(EXIT_FAILURE); - } - - if (pw->pw_expire && time(NULL) >= pw->pw_expire) { - syslog(LOG_ERR, "Userid %u has expired - aborting job %s", - uid, filename); - exit(EXIT_FAILURE); - } - - PRIV_START; - - fd_in = open(filename, O_RDONLY | O_NONBLOCK | O_NOFOLLOW, 0); - - PRIV_END; - - if (fd_in < 0) - perr("Cannot open input file"); - - if (fstat(fd_in, &stbuf) == -1) - perr("Error in fstat of input file descriptor"); - - if (!S_ISREG(stbuf.st_mode)) { - syslog(LOG_ERR, "Job %s is not a regular file - aborting", - filename); - exit(EXIT_FAILURE); - } - if (stbuf.st_uid != uid) { - syslog(LOG_ERR, "Uid mismatch for job %s", filename); - exit(EXIT_FAILURE); - } - if (stbuf.st_nlink != 1) { - syslog(LOG_ERR, "Bad link count for job %s", filename); - exit(EXIT_FAILURE); - } - if ((stbuf.st_mode & ALLPERMS) != S_IRUSR) { - syslog(LOG_ERR, "Bad file mode for job %s", filename); - exit(EXIT_FAILURE); - } - if ((fflags = fcntl(fd_in, F_GETFD)) < 0) - perr("Error in fcntl"); - - (void)fcntl(fd_in, F_SETFD, fflags & ~FD_CLOEXEC); - - (void) asprintf(&fmt, - "#!/bin/sh\n# atrun uid=%%u gid=%%u\n# mail %%%ds %%d", - LOGNAMESIZE); - if (fmt == NULL) { - syslog(LOG_ERR, "out of memory - aborting"); - exit(EXIT_FAILURE); - } - if ((stream = fdopen(dup(fd_in), "r")) == NULL) - perr("Error duplicating input file descriptor"); - if (fscanf(stream, fmt, &nuid, &ngid, mailbuf, &send_mail) != 4) { - syslog(LOG_ERR, "File %s is in wrong format - aborting", - filename); - exit(EXIT_FAILURE); - } - (void) fclose(stream); - free(fmt); - if (mailbuf[0] == '-') { - syslog(LOG_ERR, "illegal mail name %s in %s", mailbuf, filename); - exit(EXIT_FAILURE); - } - mailname = mailbuf; - if (nuid != uid) { - syslog(LOG_ERR, "Job %s - userid %u does not match file uid %u", - filename, nuid, uid); - exit(EXIT_FAILURE); - } - if (ngid != gid) { - syslog(LOG_ERR, "Job %s - groupid %u does not match file gid %u", - filename, ngid, gid); - exit(EXIT_FAILURE); - } - - PRIV_START; - - if (chdir(_PATH_ATSPOOL) < 0) - perr2("Cannot chdir to ", _PATH_ATSPOOL); - - /* - * Create a file to hold the output of the job we are about to - * run. Write the mail header. - */ - - if ((fd_out = open(filename, - O_WRONLY | O_CREAT | O_EXCL, S_IWUSR | S_IRUSR)) < 0) - perr("Cannot create output file"); - - PRIV_END; - - write_string(fd_out, "To: "); - write_string(fd_out, mailname); - write_string(fd_out, "\nSubject: Output from your job "); - write_string(fd_out, filename); - write_string(fd_out, "\n\n"); - if (fstat(fd_out, &stbuf) == -1) - perr("Error in fstat of output file descriptor"); - size = stbuf.st_size; - - (void)close(STDIN_FILENO); - (void)close(STDOUT_FILENO); - (void)close(STDERR_FILENO); - - pid = fork(); - if (pid < 0) - perr("Error in fork"); - else if (pid == 0) { - char *nul = NULL; - char **nenvp = &nul; - - /* - * Set up things for the child; we want standard input from - * the input file, and standard output and error sent to - * our output file. - */ - if (lseek(fd_in, (off_t) 0, SEEK_SET) < 0) - perr("Error in lseek"); - - if (dup(fd_in) != STDIN_FILENO) - perr("Error in I/O redirection"); - - if (dup(fd_out) != STDOUT_FILENO) - perr("Error in I/O redirection"); - - if (dup(fd_out) != STDERR_FILENO) - perr("Error in I/O redirection"); - - (void)close(fd_in); - (void)close(fd_out); - - PRIV_START; - - if (chdir(_PATH_ATJOBS) < 0) - perr2("Cannot chdir to ", _PATH_ATJOBS); - - if ((lc = login_getclass(pw->pw_class)) == NULL) - perr("Cannot get login class"); - - if (setusercontext(lc, pw, pw->pw_uid, LOGIN_SETALL) < 0) - perr("Cannot set user context"); - - if (auth_approval(as, lc, pw->pw_name, "at") <= 0) - perr2("Approval failure for ", pw->pw_name); - - auth_close(as); - login_close(lc); - - if (chdir(pw->pw_dir) < 0) - chdir("/"); - - /* First letter indicates requested job priority */ - queue = tolower((unsigned char) *filename); - if (queue > 'b') - (void) setpriority(PRIO_PROCESS, 0, queue - 'b'); - - if (execle(_PATH_BSHELL, "sh", (char *)NULL, nenvp) != 0) - perr("Exec failed for /bin/sh"); - - PRIV_END; - } - /* We're the parent. Let's wait. */ - (void)close(fd_in); - (void)close(fd_out); - waitpid(pid, (int *)NULL, 0); - - /* - * Send mail. Unlink the output file first, so it is deleted - * after the run. - */ - PRIV_START; - - if (stat(filename, &stbuf) == -1) - perr("Error in stat of output file"); - if (open(filename, O_RDONLY | O_NOFOLLOW) != STDIN_FILENO) - perr("Open of jobfile failed"); - - (void)unlink(filename); - - PRIV_END; - - if ((stbuf.st_size != size) || send_mail) { - /* Fork off a child for sending mail */ - - PRIV_START; - - if (setusercontext(0, pw, pw->pw_uid, LOGIN_SETALL) < 0) - perr("Cannot set user context"); - - if (chdir(pw->pw_dir)) - chdir("/"); - - execl(_PATH_SENDMAIL, "sendmail", "-F", "Atrun Service", - "-odi", "-oem", "-t", (char *)NULL); - perr("Exec failed for mail command"); - - PRIV_END; - } - exit(EXIT_SUCCESS); -} - - -int -main(int argc, char **argv) -{ - /* - * Browse through _PATH_ATJOBS, looking for jobs that should be - * be executed and/or deleted. The filename consists of the date - * (in seconds since the epoch) followed by a '.' and then the - * queue (a letter). A file which has not been executed yet will - * have its execute bit set. For each file which is to be executed, - * run_file() is called, which forks off a child to take care of - * I/O redirection, forking off another child for execution and - * yet another one, optionally, for sending mail. Files which - * have already run are removed during the next invocation. - */ - DIR *spool; - struct dirent *dirent; - struct stat stbuf; - char queue; - char *ep; - time_t now, run_time; - char batch_name[FILENAME_MAX]; - uid_t batch_uid; - gid_t batch_gid; - long l; - int c; - int run_batch; - double la, load_avg = ATRUN_MAXLOAD; - - /* - * We don't need root privileges all the time; running under uid - * and gid nobody is fine except for privileged operations. - */ - RELINQUISH_PRIVS_ROOT(NOBODY_UID, NOBODY_GID); - - openlog("atrun", LOG_PID, LOG_CRON); - - errno = 0; - while ((c = getopt(argc, argv, "dl:")) != -1) { - switch (c) { - case 'l': - errno = EINVAL; - load_avg = strtod(optarg, &ep); - if (*ep != '\0' || (errno == ERANGE && - (load_avg == DBL_MAX || load_avg == DBL_MIN))) - perr2("bad load average: %s", optarg); - if (load_avg <= 0.) - load_avg = ATRUN_MAXLOAD; - break; - - case 'd': - debug++; - break; - - default: - syslog(LOG_ERR, "unknown option"); - exit(EXIT_FAILURE); - } - } - - PRIV_START; - - if (chdir(_PATH_ATJOBS) != 0) - perr2("Cannot change to ", _PATH_ATJOBS); - - /* - * Main loop. Open spool directory for reading and look over all - * the files in there. If the filename indicates that the job - * should be run and the x bit is set, fork off a child which sets - * its user and group id to that of the files and exec a /bin/sh - * which executes the shell script. Unlink older files if they - * should no longer be run. For deletion, their r bit has to be - * turned on. - * - * Also, pick the oldest batch job to run, at most one per - * invocation of atrun. - */ - if ((spool = opendir(".")) == NULL) - perr2("Cannot read ", _PATH_ATJOBS); - - PRIV_END; - - now = time(NULL); - run_batch = 0; - batch_uid = (uid_t) -1; - batch_gid = (gid_t) -1; - batch_name[0] = '\0'; - - while ((dirent = readdir(spool)) != NULL) { - PRIV_START; - - if (stat(dirent->d_name, &stbuf) != 0) - perr2("Cannot stat in ", _PATH_ATJOBS); - - PRIV_END; - - /* We don't want directories */ - if (!S_ISREG(stbuf.st_mode)) - continue; - - l = strtol(dirent->d_name, &ep, 10); - if (*ep != '.' || !isalpha(*(ep + 1)) || l < 0 || l >= INT_MAX) - continue; - run_time = (time_t)l; - queue = *(ep + 1); - - if ((S_IXUSR & stbuf.st_mode) && (run_time <= now)) { - if (isupper(queue) && - (strcmp(batch_name, dirent->d_name) > 0)) { - run_batch = 1; - (void)strlcpy(batch_name, dirent->d_name, - sizeof(batch_name)); - batch_uid = stbuf.st_uid; - batch_gid = stbuf.st_gid; - } - - /* The file is executable and old enough */ - if (islower(queue)) - run_file(dirent->d_name, stbuf.st_uid, - stbuf.st_gid); - } - - /* Delete older files */ - if ((run_time < now) && !(S_IXUSR & stbuf.st_mode) && - (S_IRUSR & stbuf.st_mode)) { - PRIV_START; - - (void)unlink(dirent->d_name); - - PRIV_END; - } - } - - /* Run the single batch file, if any */ - if (run_batch && ((getloadavg(&la, 1) == 1) && la < load_avg)) - run_file(batch_name, batch_uid, batch_gid); - - closelog(); - exit(EXIT_SUCCESS); -} diff --git a/libexec/atrun/atrun.h b/libexec/atrun/atrun.h deleted file mode 100644 index d6a9feb9701..00000000000 --- a/libexec/atrun/atrun.h +++ /dev/null @@ -1,35 +0,0 @@ -/* $OpenBSD: atrun.h,v 1.3 2001/01/28 19:34:27 niklas Exp $*/ -/* - * Copyright (c) 1993 Christopher G. Demetriou - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Christopher G. Demetriou. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#define ATRUN_MAXLOAD 1.5 -#define NOBODY_UID 32767 -#define NOBODY_GID 32767 |