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Upgrade.
This commit is contained in:
Andrey A. Chernov
parent
fa877a53cb
commit
b89321a57d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=7767
@ -1,7 +1,9 @@
|
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# $Id: Makefile,v 1.1 1993/12/05 11:35:35 cgd Exp $
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# $Id: Makefile,v 1.1 1994/01/05 01:08:51 nate Exp $
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.include "${.CURDIR}/Makefile.inc"
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PROG= at
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SRCS= at.c panic.c parsetime.c
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SRCS= at.c panic.c parsetime.c perm.c
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LINKS= ${BINDIR}/at ${BINDIR}/atq \
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${BINDIR}/at ${BINDIR}/atrm \
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${BINDIR}/at ${BINDIR}/batch
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@ -11,5 +13,20 @@ MLINKS= at.1 batch.1 \
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BINOWN= root
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BINMODE= 4555
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MANSRC= .
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CLEANFILES += ${MAN1}
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MANDEPEND = ${MAN1}
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.include <bsd.prog.mk>
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${MAN1}: at.man
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sed -e \
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"s@_ATSPOOL_DIR@$(ATSPOOL_DIR)@g; \
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s@_ATJOB_DIR@$(ATJOB_DIR)@g; \
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s@_DEFAULT_BATCH_QUEUE@$(DEFAULT_BATCH_QUEUE)@g; \
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s@_DEFAULT_AT_QUEUE@$(DEFAULT_AT_QUEUE)@g; \
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s@_LOADAVG_MX@$(LOADAVG_MX)@g; \
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s@_PERM_PATH@$(PERM_PATH)@g; \
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s@_LOCKFILE@$(LOCKFILE)@g" \
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< $? > $@
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19
usr.bin/at/Makefile.inc
Normal file
19
usr.bin/at/Makefile.inc
Normal file
@ -0,0 +1,19 @@
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VERSION= 2.7a
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LOCKFILE = .lockfile
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ATSPOOL_DIR=/var/at/spool
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ATJOB_DIR=/var/at/jobs
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ATLIB_DIR=/usr/libexec
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LOADAVG_MX=1.5
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DAEMON_GID=1
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DAEMON_UID=1
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DEFAULT_BATCH_QUEUE=E
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DEFAULT_AT_QUEUE=c
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PERM_PATH=/var/at
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CFLAGS += -DATJOB_DIR=\"$(ATJOB_DIR)/\" \
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-DLFILE=\"$(ATJOB_DIR)/$(LOCKFILE)\" \
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-DLOADAVG_MX=$(LOADAVG_MX) -DATSPOOL_DIR=\"$(ATSPOOL_DIR)\" \
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-DVERSION=\"$(VERSION)\" -DDAEMON_UID=$(DAEMON_UID) -DDAEMON_GID=$(DAEMON_GID) \
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-DDEFAULT_BATCH_QUEUE=\'$(DEFAULT_BATCH_QUEUE)\' \
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-DDEFAULT_AT_QUEUE=\'$(DEFAULT_AT_QUEUE)\' -DPERM_PATH=\"$(PERM_PATH)/\"
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875
usr.bin/at/at.c
875
usr.bin/at/at.c
File diff suppressed because it is too large
Load Diff
@ -1,7 +1,6 @@
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/*
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* at.h - header for at(1)
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* Copyright (c) 1993 by Thomas Koenig
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* All rights reserved.
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/*
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* at.h - header for at(1)
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* Copyright (C) 1993 Thomas Koenig
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -22,8 +21,6 @@
|
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* THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
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*
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* $Id: at.h,v 1.1 1993/12/05 11:36:45 cgd Exp $
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*/
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extern int fcreated;
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@ -31,4 +28,4 @@ extern char *namep;
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extern char atfile[];
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extern char atverify;
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#define AT_MAXJOBS 255 /* max jobs outstanding per user */
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void *mymalloc(size_t n);
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260
usr.bin/at/at.man
Normal file
260
usr.bin/at/at.man
Normal file
@ -0,0 +1,260 @@
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.\" $Id: at.man,v 1.3 1994/06/16 16:49:46 kernel Exp $
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.Dd April 12, 1995
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.Dt "AT" 1
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.Os "FreeBSD 2.1"
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.Sh NAME
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.Nm at, batch, atq, atrm
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.Nd queue, examine or delete jobs for later execution
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.Sh SYNOPSIS
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.Nm at
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.Op Fl V
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.Op Fl q Ar queue
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.Op Fl f Ar file
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.Op Fl mldbv
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.Ar time
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.Pp
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.Nm atq
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.Op Fl V
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.Op Fl q Ar queue
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.Op Fl v
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.Pp
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.Nm atrm
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.Op Fl V
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.Ar job
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.Op Ar job ...
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.Pp
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.Nm batch
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.Op Fl V
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.Op Fl q Ar queue
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.Op Fl f Ar file
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.Op Fl mv
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.Op Ar time
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.Sh DESCRIPTION
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.Nm At
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and
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.Nm batch
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read commands from standard input or a specified file which are to
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be executed at a later time, using
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.Xr sh 1 .
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.Bl -tag -width indent
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.It Nm at
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executes commands at a specified time;
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.It Nm atq
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lists the user's pending jobs, unless the user is the superuser; in that
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case, everybody's jobs are listed;
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.It Nm atrm
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deletes jobs;
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.It Nm batch
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executes commands when system load levels permit; in other words, when the load average
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drops below _LOADAVG_MX, or the value specified in the invocation of
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.Nm atrun .
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.El
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.Pp
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.Nm At
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allows some moderately complex
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.Ar time
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specifications. It accepts times of the form
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.Ar HHMM
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or
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.Ar HH:MM
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to run a job at a specific time of day.
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(If that time is already past, the next day is assumed.)
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You may also specify
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.Nm midnight ,
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.Nm noon ,
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or
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.Nm teatime
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(4pm)
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and you can have a time-of-day suffixed with
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.Nm AM
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or
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.Nm PM
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for running in the morning or the evening.
|
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You can also say what day the job will be run,
|
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by giving a date in the form
|
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.Ar \%month-name day
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with an optional
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.Ar year ,
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or giving a date of the form
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.Ar MMDDYY
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or
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.Ar MM/DD/YY
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or
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.Ar DD.MM.YY .
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You can also give times like
|
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.Op Nm now
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.Nm + Ar count \%time-units ,
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where the time-units can be
|
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.Nm minutes ,
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.Nm hours ,
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.Nm days ,
|
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or
|
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.Nm weeks
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and you can tell
|
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.Nm at
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to run the job today by suffixing the time with
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.Nm today
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and to run the job tomorrow by suffixing the time with
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.Nm tomorrow.
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.Pp
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For example, to run a job at 4pm three days from now, you would do
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.Nm at 4pm + 3 days ,
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to run a job at 10:00am on July 31, you would do
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.Nm at 10am Jul 31
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and to run a job at 1am tomorrow, you would do
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.Nm at 1am tomorrow.
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.Pp
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For both
|
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.Nm at
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and
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.Nm batch ,
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commands are read from standard input or the file specified
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with the
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.Fl f
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option and executed.
|
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The working directory, the environment (except for the variables
|
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.Nm TERM ,
|
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.Nm TERMCAP ,
|
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.Nm DISPLAY
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and
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.Nm _ )
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and the
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.Ar umask
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are retained from the time of invocation.
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||||
An
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.Nm at
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or
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.Nm batch
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command invoked from a
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.Xr su 1
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shell will retain the current userid.
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The user will be mailed standard error and standard output from his
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commands, if any. Mail will be sent using the command
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.Xr sendmail 8 .
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If
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.Nm at
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is executed from a
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.Xr su 1
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shell, the owner of the login shell will receive the mail.
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.Pp
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The superuser may use these commands in any case.
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For other users, permission to use at is determined by the files
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.Pa _PERM_PATH/at.allow
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and
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.Pa _PERM_PATH/at.deny .
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.Pp
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If the file
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.Pa _PERM_PATH/at.allow
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exists, only usernames mentioned in it are allowed to use
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.Nm at .
|
||||
.Pp
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If
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.Pa _PERM_PATH/at.allow
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does not exist,
|
||||
.Pa _PERM_PATH/at.deny
|
||||
is checked, every username not mentioned in it is then allowed
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||||
to use
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||||
.Nm at .
|
||||
.Pp
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||||
If neither exists, only the superuser is allowed use of
|
||||
.Nm at .
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||||
.Pp
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An empty
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||||
.Pa _PERM_PATH/at.deny
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||||
means that every user is allowed use these commands, this is the
|
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default configuration.
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.Sh OPTIONS
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||||
.Bl -tag -width indent
|
||||
.It Fl V
|
||||
prints the version number to standard error.
|
||||
.It Fl q Ar queue
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||||
uses the specified queue.
|
||||
A queue designation consists of a single letter; valid queue designations
|
||||
range from
|
||||
.Nm a
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||||
to
|
||||
.Nm z .
|
||||
and
|
||||
.Nm A
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||||
to
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||||
.Nm Z .
|
||||
The
|
||||
.Nm _DEFAULT_AT_QUEUE
|
||||
queue is the default for
|
||||
.Nm at
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||||
and the
|
||||
.Nm _DEFAULT_BATCH_QUEUE
|
||||
queue for
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||||
.Nm batch .
|
||||
Queues with higher letters run with increased niceness.
|
||||
If a job is submitted to a queue designated with an uppercase letter, it
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is treated as if it had been submitted to batch at that time.
|
||||
If
|
||||
.Nm atq
|
||||
is given a specific queue, it will only show jobs pending in that queue.
|
||||
.It Fl m
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||||
Send mail to the user when the job has completed even if there was no
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output.
|
||||
.It Fl f Ar file
|
||||
Reads the job from
|
||||
.Ar file
|
||||
rather than standard input.
|
||||
.It Fl l
|
||||
Is an alias for
|
||||
.Nm atq.
|
||||
.It Fl d
|
||||
Is an alias for
|
||||
.Nm atrm.
|
||||
.It Fl b
|
||||
Is an alias for
|
||||
.Nm batch.
|
||||
.It Fl v
|
||||
For
|
||||
.Nm atq ,
|
||||
shows completed but not yet deleted jobs in the queue; otherwise
|
||||
shows the time the job will be executed.
|
||||
.Sh FILES
|
||||
.Bl -tag -width _ATJOB_DIR/_LOCKFILE -compact
|
||||
.It Pa _ATJOB_DIR
|
||||
Directory containing job files
|
||||
.It Pa _ATSPOOL_DIR
|
||||
Directory containing output spool files
|
||||
.It Pa /var/run/utmp
|
||||
Login records
|
||||
.It Pa _PERM_PATH/at.allow
|
||||
Allow permission control
|
||||
.It Pa _PERM_PATH/at.deny
|
||||
Deny permission control
|
||||
.It Pa _ATJOB_DIR/_LOCKFILE
|
||||
Job-creation lock file.
|
||||
.Sh SEE ALSO
|
||||
.Xr cron 8 ,
|
||||
.Xr nice 1 ,
|
||||
.Xr umask 2 ,
|
||||
.Xr sh 1 ,
|
||||
.Xr sendmail 8 ,
|
||||
.Xr atrun 8 .
|
||||
.El
|
||||
.Sh BUGS
|
||||
.Pp
|
||||
If the file
|
||||
.Pa /var/run/utmp
|
||||
is not available or corrupted, or if the user is not logged on at the
|
||||
time
|
||||
.Nm at
|
||||
is invoked, the mail is sent to the userid found
|
||||
in the environment variable
|
||||
.Nm LOGNAME .
|
||||
If that is undefined or empty, the current userid is assumed.
|
||||
.Pp
|
||||
.Nm At
|
||||
and
|
||||
.Nm batch
|
||||
as presently implemented are not suitable when users are competing for
|
||||
resources.
|
||||
If this is the case for your site, you might want to consider another
|
||||
batch system, such as
|
||||
.Nm nqs .
|
||||
.Sh AUTHOR
|
||||
At was mostly written by Thomas Koenig, ig25@rz.uni-karlsruhe.de.
|
||||
The time parsing routines are by David Parsons, orc@pell.chi.il.us.
|
||||
@ -1,7 +1,6 @@
|
||||
/*
|
||||
* panic.c - terminate fast in case of error
|
||||
* Copyright (c) 1993 by Thomas Koenig
|
||||
* All rights reserved.
|
||||
/*
|
||||
* panic.c - terminate fast in case of error
|
||||
* Copyright (C) 1993 Thomas Koenig
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -38,28 +37,26 @@
|
||||
|
||||
/* File scope variables */
|
||||
|
||||
static char rcsid[] = "$Id: panic.c,v 1.1 1993/12/05 11:36:51 cgd Exp $";
|
||||
static char rcsid[] = "$Id: panic.c,v 1.1 1994/05/10 18:23:08 kernel Exp $";
|
||||
|
||||
/* External variables */
|
||||
|
||||
/* Global functions */
|
||||
|
||||
void
|
||||
panic(a)
|
||||
char *a;
|
||||
panic(char *a)
|
||||
{
|
||||
/* Something fatal has happened, print error message and exit.
|
||||
*/
|
||||
fprintf(stderr, "%s: %s\n", namep, a);
|
||||
fprintf(stderr,"%s: %s\n",namep,a);
|
||||
if (fcreated)
|
||||
unlink(atfile);
|
||||
|
||||
exit(EXIT_FAILURE);
|
||||
exit (EXIT_FAILURE);
|
||||
}
|
||||
|
||||
void
|
||||
perr(a)
|
||||
char *a;
|
||||
perr(char *a)
|
||||
{
|
||||
/* Some operating system error; print error message and exit.
|
||||
*/
|
||||
@ -70,22 +67,14 @@ perr(a)
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
void
|
||||
perr2(a, b)
|
||||
char *a, *b;
|
||||
{
|
||||
fprintf(stderr, "%s", a);
|
||||
perr(b);
|
||||
}
|
||||
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
/* Print usage and exit.
|
||||
*/
|
||||
fprintf(stderr, "Usage: at [-q x] [-f file] [-m] time\n"
|
||||
" atq [-q x] [-v]\n"
|
||||
" atrm [-q x] job ...\n"
|
||||
" batch [-f file] [-m]\n");
|
||||
exit(EXIT_FAILURE);
|
||||
fprintf(stderr, "Usage: at [-V] [-q x] [-f file] [-m] time\n"
|
||||
" atq [-V] [-q x] [-v]\n"
|
||||
" atrm [-V] [-q x] job ...\n"
|
||||
" batch [-V] [-f file] [-m]\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
@ -1,7 +1,6 @@
|
||||
/*
|
||||
* panic.h - header for at(1)
|
||||
* Copyright (c) 1993 Thomas Koenig
|
||||
* All rights reserved.
|
||||
/*
|
||||
* panic.h - header for at(1)
|
||||
* Copyright (C) 1993 Thomas Koenig
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -22,11 +21,24 @@
|
||||
* 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.
|
||||
*
|
||||
* $Id: panic.h,v 1.1 1993/12/05 11:36:58 cgd Exp $
|
||||
*/
|
||||
|
||||
void panic __P((char *a));
|
||||
void perr __P((char *a));
|
||||
void perr2 __P((char *a, char *b));
|
||||
void usage __P((void));
|
||||
#ifdef __FreeBSD__
|
||||
#define __NORETURN
|
||||
#endif
|
||||
|
||||
void
|
||||
#ifdef __GNUC__
|
||||
__NORETURN
|
||||
#endif
|
||||
panic(char *a);
|
||||
void
|
||||
#ifdef __GNUC__
|
||||
__NORETURN
|
||||
#endif
|
||||
perr(char *a);
|
||||
void
|
||||
#ifdef __GNUC__
|
||||
__NORETURN
|
||||
#endif
|
||||
usage(void);
|
||||
|
||||
@ -1,10 +1,9 @@
|
||||
/*
|
||||
* parsetime.c - parse time for at(1)
|
||||
* Copyright (C) 1993 Thomas Koenig
|
||||
* parsetime.c - parse time for at(1)
|
||||
* Copyright (C) 1993, 1994 Thomas Koenig
|
||||
*
|
||||
* modifications for english-language times
|
||||
* Copyright (C) 1993 David Parsons
|
||||
* All rights reserved.
|
||||
* modifications for english-language times
|
||||
* Copyright (C) 1993 David Parsons
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -29,12 +28,14 @@
|
||||
* at [NOW] PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS
|
||||
* /NUMBER [DOT NUMBER] [AM|PM]\ /[MONTH NUMBER [NUMBER]] \
|
||||
* |NOON | |[TOMORROW] |
|
||||
* |MIDNIGHT | |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
|
||||
* \TEATIME / \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
|
||||
* |MIDNIGHT | |[DAY OF WEEK] |
|
||||
* \TEATIME / |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
|
||||
* \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
|
||||
*/
|
||||
|
||||
/* System Headers */
|
||||
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
@ -43,6 +44,9 @@
|
||||
#include <time.h>
|
||||
#include <unistd.h>
|
||||
#include <ctype.h>
|
||||
#ifndef __FreeBSD__
|
||||
#include <getopt.h>
|
||||
#endif
|
||||
|
||||
/* Local headers */
|
||||
|
||||
@ -58,51 +62,60 @@ enum { /* symbols */
|
||||
MINUTES, HOURS, DAYS, WEEKS,
|
||||
NUMBER, PLUS, DOT, SLASH, ID, JUNK,
|
||||
JAN, FEB, MAR, APR, MAY, JUN,
|
||||
JUL, AUG, SEP, OCT, NOV, DEC
|
||||
};
|
||||
JUL, AUG, SEP, OCT, NOV, DEC,
|
||||
SUN, MON, TUE, WED, THU, FRI, SAT
|
||||
};
|
||||
|
||||
/*
|
||||
* parse translation table - table driven parsers can be your FRIEND!
|
||||
/* parse translation table - table driven parsers can be your FRIEND!
|
||||
*/
|
||||
struct {
|
||||
char *name; /* token name */
|
||||
int value; /* token id */
|
||||
int plural; /* is this plural? */
|
||||
} Specials[] = {
|
||||
{ "midnight", MIDNIGHT }, /* 00:00:00 of today or tomorrow */
|
||||
{ "noon", NOON }, /* 12:00:00 of today or tomorrow */
|
||||
{ "teatime", TEATIME }, /* 16:00:00 of today or tomorrow */
|
||||
{ "am", AM }, /* morning times for 0-12 clock */
|
||||
{ "pm", PM }, /* evening times for 0-12 clock */
|
||||
{ "tomorrow", TOMORROW }, /* execute 24 hours from time */
|
||||
{ "today", TODAY }, /* execute today - don't advance time */
|
||||
{ "now", NOW }, /* opt prefix for PLUS */
|
||||
{ "midnight", MIDNIGHT,0 }, /* 00:00:00 of today or tomorrow */
|
||||
{ "noon", NOON,0 }, /* 12:00:00 of today or tomorrow */
|
||||
{ "teatime", TEATIME,0 }, /* 16:00:00 of today or tomorrow */
|
||||
{ "am", AM,0 }, /* morning times for 0-12 clock */
|
||||
{ "pm", PM,0 }, /* evening times for 0-12 clock */
|
||||
{ "tomorrow", TOMORROW,0 }, /* execute 24 hours from time */
|
||||
{ "today", TODAY, 0 }, /* execute today - don't advance time */
|
||||
{ "now", NOW,0 }, /* opt prefix for PLUS */
|
||||
|
||||
{ "minute", MINUTES }, /* minutes multiplier */
|
||||
{ "min", MINUTES },
|
||||
{ "m", MINUTES },
|
||||
{ "minutes", MINUTES }, /* (pluralized) */
|
||||
{ "hour", HOURS }, /* hours ... */
|
||||
{ "hr", HOURS }, /* abbreviated */
|
||||
{ "h", HOURS },
|
||||
{ "hours", HOURS }, /* (pluralized) */
|
||||
{ "day", DAYS }, /* days ... */
|
||||
{ "d", DAYS },
|
||||
{ "days", DAYS }, /* (pluralized) */
|
||||
{ "week", WEEKS }, /* week ... */
|
||||
{ "w", WEEKS },
|
||||
{ "weeks", WEEKS }, /* (pluralized) */
|
||||
{ "jan", JAN },
|
||||
{ "feb", FEB },
|
||||
{ "mar", MAR },
|
||||
{ "apr", APR },
|
||||
{ "may", MAY },
|
||||
{ "jun", JUN },
|
||||
{ "jul", JUL },
|
||||
{ "aug", AUG },
|
||||
{ "sep", SEP },
|
||||
{ "oct", OCT },
|
||||
{ "nov", NOV },
|
||||
{ "dec", DEC }
|
||||
{ "minute", MINUTES,0 }, /* minutes multiplier */
|
||||
{ "minutes", MINUTES,1 }, /* (pluralized) */
|
||||
{ "hour", HOURS,0 }, /* hours ... */
|
||||
{ "hours", HOURS,1 }, /* (pluralized) */
|
||||
{ "day", DAYS,0 }, /* days ... */
|
||||
{ "days", DAYS,1 }, /* (pluralized) */
|
||||
{ "week", WEEKS,0 }, /* week ... */
|
||||
{ "weeks", WEEKS,1 }, /* (pluralized) */
|
||||
{ "jan", JAN,0 },
|
||||
{ "feb", FEB,0 },
|
||||
{ "mar", MAR,0 },
|
||||
{ "apr", APR,0 },
|
||||
{ "may", MAY,0 },
|
||||
{ "jun", JUN,0 },
|
||||
{ "jul", JUL,0 },
|
||||
{ "aug", AUG,0 },
|
||||
{ "sep", SEP,0 },
|
||||
{ "oct", OCT,0 },
|
||||
{ "nov", NOV,0 },
|
||||
{ "dec", DEC,0 },
|
||||
{ "sunday", SUN, 0 },
|
||||
{ "sun", SUN, 0 },
|
||||
{ "monday", MON, 0 },
|
||||
{ "mon", MON, 0 },
|
||||
{ "tuesday", TUE, 0 },
|
||||
{ "tue", TUE, 0 },
|
||||
{ "wednesday", WED, 0 },
|
||||
{ "wed", WED, 0 },
|
||||
{ "thursday", THU, 0 },
|
||||
{ "thu", THU, 0 },
|
||||
{ "friday", FRI, 0 },
|
||||
{ "fri", FRI, 0 },
|
||||
{ "saturday", SAT, 0 },
|
||||
{ "sat", SAT, 0 },
|
||||
} ;
|
||||
|
||||
/* File scope variables */
|
||||
@ -115,8 +128,9 @@ static int need; /* scanner - need to advance to next argument */
|
||||
static char *sc_token; /* scanner - token buffer */
|
||||
static size_t sc_len; /* scanner - lenght of token buffer */
|
||||
static int sc_tokid; /* scanner - token id */
|
||||
static int sc_tokplur; /* scanner - is token plural? */
|
||||
|
||||
static char rcsid[] = "$Id: parsetime.c,v 1.1 1994/01/05 01:09:08 nate Exp $";
|
||||
static char rcsid[] = "$Id: parsetime.c,v 1.1 1994/05/10 18:23:08 kernel Exp $";
|
||||
|
||||
/* Local functions */
|
||||
|
||||
@ -124,13 +138,13 @@ static char rcsid[] = "$Id: parsetime.c,v 1.1 1994/01/05 01:09:08 nate Exp $";
|
||||
* parse a token, checking if it's something special to us
|
||||
*/
|
||||
static int
|
||||
parse_token(arg)
|
||||
char *arg;
|
||||
parse_token(char *arg)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i=0; i<(sizeof Specials/sizeof Specials[0]); i++)
|
||||
if (strcasecmp(Specials[i].name, arg) == 0) {
|
||||
sc_tokplur = Specials[i].plural;
|
||||
return sc_tokid = Specials[i].value;
|
||||
}
|
||||
|
||||
@ -143,9 +157,7 @@ parse_token(arg)
|
||||
* init_scanner() sets up the scanner to eat arguments
|
||||
*/
|
||||
static void
|
||||
init_scanner(argc, argv)
|
||||
int argc;
|
||||
char **argv;
|
||||
init_scanner(int argc, char **argv)
|
||||
{
|
||||
scp = argv;
|
||||
scc = argc;
|
||||
@ -154,9 +166,7 @@ init_scanner(argc, argv)
|
||||
while (--argc > 0)
|
||||
sc_len += strlen(*++argv);
|
||||
|
||||
sc_token = (char *) malloc(sc_len);
|
||||
if (sc_token == NULL)
|
||||
panic("Insufficient virtual memory");
|
||||
sc_token = (char *) mymalloc(sc_len);
|
||||
} /* init_scanner */
|
||||
|
||||
/*
|
||||
@ -170,10 +180,10 @@ token()
|
||||
while (1) {
|
||||
memset(sc_token, 0, sc_len);
|
||||
sc_tokid = EOF;
|
||||
sc_tokplur = 0;
|
||||
idx = 0;
|
||||
|
||||
/*
|
||||
* if we need to read another argument, walk along the argument list;
|
||||
/* if we need to read another argument, walk along the argument list;
|
||||
* when we fall off the arglist, we'll just return EOF forever
|
||||
*/
|
||||
if (need) {
|
||||
@ -184,8 +194,7 @@ token()
|
||||
scc--;
|
||||
need = 0;
|
||||
}
|
||||
/*
|
||||
* eat whitespace now - if we walk off the end of the argument,
|
||||
/* eat whitespace now - if we walk off the end of the argument,
|
||||
* we'll continue, which puts us up at the top of the while loop
|
||||
* to fetch the next argument in
|
||||
*/
|
||||
@ -196,20 +205,19 @@ token()
|
||||
continue;
|
||||
}
|
||||
|
||||
/*
|
||||
* preserve the first character of the new token
|
||||
/* preserve the first character of the new token
|
||||
*/
|
||||
sc_token[0] = *sct++;
|
||||
|
||||
/*
|
||||
* then see what it is
|
||||
/* then see what it is
|
||||
*/
|
||||
if (isdigit(sc_token[0])) {
|
||||
while (isdigit(*sct))
|
||||
sc_token[++idx] = *sct++;
|
||||
sc_token[++idx] = 0;
|
||||
return sc_tokid = NUMBER;
|
||||
} else if (isalpha(sc_token[0])) {
|
||||
}
|
||||
else if (isalpha(sc_token[0])) {
|
||||
while (isalpha(*sct))
|
||||
sc_token[++idx] = *sct++;
|
||||
sc_token[++idx] = 0;
|
||||
@ -219,7 +227,7 @@ token()
|
||||
return sc_tokid = DOT;
|
||||
else if (sc_token[0] == '+')
|
||||
return sc_tokid = PLUS;
|
||||
else if (*sct == '/')
|
||||
else if (sc_token[0] == '/')
|
||||
return sc_tokid = SLASH;
|
||||
else
|
||||
return sc_tokid = JUNK;
|
||||
@ -231,8 +239,7 @@ token()
|
||||
* plonk() gives an appropriate error message if a token is incorrect
|
||||
*/
|
||||
static void
|
||||
plonk(tok)
|
||||
int tok;
|
||||
plonk(int tok)
|
||||
{
|
||||
panic((tok == EOF) ? "incomplete time"
|
||||
: "garbled time");
|
||||
@ -243,8 +250,7 @@ plonk(tok)
|
||||
* expect() gets a token and dies most horribly if it's not the token we want
|
||||
*/
|
||||
static void
|
||||
expect(desired)
|
||||
int desired;
|
||||
expect(int desired)
|
||||
{
|
||||
if (token() != desired)
|
||||
plonk(sc_tokid); /* and we die here... */
|
||||
@ -257,9 +263,7 @@ expect(desired)
|
||||
* work properly
|
||||
*/
|
||||
static void
|
||||
dateadd(minutes, tm)
|
||||
int minutes;
|
||||
struct tm *tm;
|
||||
dateadd(int minutes, struct tm *tm)
|
||||
{
|
||||
/* increment days */
|
||||
|
||||
@ -300,14 +304,15 @@ dateadd(minutes, tm)
|
||||
*
|
||||
*/
|
||||
static void
|
||||
plus(tm)
|
||||
struct tm *tm;
|
||||
plus(struct tm *tm)
|
||||
{
|
||||
int delay;
|
||||
int expectplur;
|
||||
|
||||
expect(NUMBER);
|
||||
|
||||
delay = atoi(sc_token);
|
||||
expectplur = (delay != 1) ? 1 : 0;
|
||||
|
||||
switch (token()) {
|
||||
case WEEKS:
|
||||
@ -317,6 +322,8 @@ plus(tm)
|
||||
case HOURS:
|
||||
delay *= 60;
|
||||
case MINUTES:
|
||||
if (expectplur != sc_tokplur)
|
||||
fprintf(stderr, "at: pluralization is wrong\n");
|
||||
dateadd(delay, tm);
|
||||
return;
|
||||
}
|
||||
@ -329,8 +336,7 @@ plus(tm)
|
||||
* [NUMBER [DOT NUMBER] [AM|PM]]
|
||||
*/
|
||||
static void
|
||||
tod(tm)
|
||||
struct tm *tm;
|
||||
tod(struct tm *tm)
|
||||
{
|
||||
int hour, minute = 0;
|
||||
int tlen;
|
||||
@ -338,8 +344,7 @@ tod(tm)
|
||||
hour = atoi(sc_token);
|
||||
tlen = strlen(sc_token);
|
||||
|
||||
/*
|
||||
* first pick out the time of day - if it's 4 digits, we assume
|
||||
/* first pick out the time of day - if it's 4 digits, we assume
|
||||
* a HHMM time, otherwise it's HH DOT MM time
|
||||
*/
|
||||
if (token() == DOT) {
|
||||
@ -348,15 +353,15 @@ tod(tm)
|
||||
if (minute > 59)
|
||||
panic("garbled time");
|
||||
token();
|
||||
} else if (tlen == 4) {
|
||||
}
|
||||
else if (tlen == 4) {
|
||||
minute = hour%100;
|
||||
if (minute > 59)
|
||||
panic("garbeld time");
|
||||
hour = hour/100;
|
||||
}
|
||||
|
||||
/*
|
||||
* check if an AM or PM specifier was given
|
||||
/* check if an AM or PM specifier was given
|
||||
*/
|
||||
if (sc_tokid == AM || sc_tokid == PM) {
|
||||
if (hour > 12)
|
||||
@ -365,16 +370,18 @@ tod(tm)
|
||||
if (sc_tokid == PM)
|
||||
hour += 12;
|
||||
token();
|
||||
} else if (hour > 23)
|
||||
}
|
||||
else if (hour > 23)
|
||||
panic("garbled time");
|
||||
|
||||
/*
|
||||
* if we specify an absolute time, we don't want to bump the day even
|
||||
/* if we specify an absolute time, we don't want to bump the day even
|
||||
* if we've gone past that time - but if we're specifying a time plus
|
||||
* a relative offset, it's okay to bump things
|
||||
*/
|
||||
if ((sc_tokid == EOF || sc_tokid == PLUS) && tm->tm_hour > hour)
|
||||
if ((sc_tokid == EOF || sc_tokid == PLUS) && tm->tm_hour > hour) {
|
||||
tm->tm_mday++;
|
||||
tm->tm_wday++;
|
||||
}
|
||||
|
||||
tm->tm_hour = hour;
|
||||
tm->tm_min = minute;
|
||||
@ -389,9 +396,7 @@ tod(tm)
|
||||
* assign_date() assigns a date, wrapping to next year if needed
|
||||
*/
|
||||
static void
|
||||
assign_date(tm, mday, mon, year)
|
||||
struct tm *tm;
|
||||
long mday, mon, year;
|
||||
assign_date(struct tm *tm, long mday, long mon, long year)
|
||||
{
|
||||
if (year > 99) {
|
||||
if (year > 1899)
|
||||
@ -417,15 +422,15 @@ assign_date(tm, mday, mon, year)
|
||||
*
|
||||
* /[<month> NUMBER [NUMBER]] \
|
||||
* |[TOMORROW] |
|
||||
* |[DAY OF WEEK] |
|
||||
* |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
|
||||
* \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
|
||||
*/
|
||||
static void
|
||||
month(tm)
|
||||
struct tm *tm;
|
||||
month(struct tm *tm)
|
||||
{
|
||||
long year= (-1);
|
||||
long mday, mon;
|
||||
long mday, wday, mon;
|
||||
int tlen;
|
||||
|
||||
switch (sc_tokid) {
|
||||
@ -436,14 +441,14 @@ month(tm)
|
||||
case TOMORROW:
|
||||
/* do something tomorrow */
|
||||
tm->tm_mday ++;
|
||||
tm->tm_wday ++;
|
||||
case TODAY: /* force ourselves to stay in today - no further processing */
|
||||
token();
|
||||
break;
|
||||
|
||||
case JAN: case FEB: case MAR: case APR: case MAY: case JUN:
|
||||
case JUL: case AUG: case SEP: case OCT: case NOV: case DEC:
|
||||
/*
|
||||
* do month mday [year]
|
||||
/* do month mday [year]
|
||||
*/
|
||||
mon = (sc_tokid-JAN);
|
||||
expect(NUMBER);
|
||||
@ -455,9 +460,29 @@ month(tm)
|
||||
assign_date(tm, mday, mon, year);
|
||||
break;
|
||||
|
||||
case SUN: case MON: case TUE:
|
||||
case WED: case THU: case FRI:
|
||||
case SAT:
|
||||
/* do a particular day of the week
|
||||
*/
|
||||
wday = (sc_tokid-SUN);
|
||||
|
||||
mday = tm->tm_mday;
|
||||
|
||||
/* if this day is < today, then roll to next week
|
||||
*/
|
||||
if (wday < tm->tm_wday)
|
||||
mday += 7 - (tm->tm_wday - wday);
|
||||
else
|
||||
mday += (wday - tm->tm_wday);
|
||||
|
||||
tm->tm_wday = wday;
|
||||
|
||||
assign_date(tm, mday, tm->tm_mon, tm->tm_year);
|
||||
break;
|
||||
|
||||
case NUMBER:
|
||||
/*
|
||||
* get numeric MMDDYY, mm/dd/yy, or dd.mm.yy
|
||||
/* get numeric MMDDYY, mm/dd/yy, or dd.mm.yy
|
||||
*/
|
||||
tlen = strlen(sc_token);
|
||||
mon = atol(sc_token);
|
||||
@ -475,25 +500,27 @@ month(tm)
|
||||
token();
|
||||
}
|
||||
|
||||
/*
|
||||
* flip months and days for european timing
|
||||
/* flip months and days for european timing
|
||||
*/
|
||||
if (sep == DOT) {
|
||||
int x = mday;
|
||||
mday = mon;
|
||||
mon = x;
|
||||
}
|
||||
} else if (tlen == 6 || tlen == 8) {
|
||||
}
|
||||
else if (tlen == 6 || tlen == 8) {
|
||||
if (tlen == 8) {
|
||||
year = (mon % 10000) - 1900;
|
||||
mon /= 10000;
|
||||
} else {
|
||||
}
|
||||
else {
|
||||
year = mon % 100;
|
||||
mon /= 100;
|
||||
}
|
||||
mday = mon % 100;
|
||||
mon /= 100;
|
||||
} else
|
||||
}
|
||||
else
|
||||
panic("garbled time");
|
||||
|
||||
mon--;
|
||||
@ -509,12 +536,9 @@ month(tm)
|
||||
/* Global functions */
|
||||
|
||||
time_t
|
||||
parsetime(argc, argv)
|
||||
int argc;
|
||||
char **argv;
|
||||
parsetime(int argc, char **argv)
|
||||
{
|
||||
/*
|
||||
* Do the argument parsing, die if necessary, and return the time the job
|
||||
/* Do the argument parsing, die if necessary, and return the time the job
|
||||
* should be run.
|
||||
*/
|
||||
time_t nowtimer, runtimer;
|
||||
@ -546,8 +570,7 @@ parsetime(argc, argv)
|
||||
month(&runtime);
|
||||
break;
|
||||
|
||||
/*
|
||||
* evil coding for TEATIME|NOON|MIDNIGHT - we've initialised
|
||||
/* evil coding for TEATIME|NOON|MIDNIGHT - we've initialised
|
||||
* hr to zero up above, then fall into this case in such a
|
||||
* way so we add +12 +4 hours to it for teatime, +12 hours
|
||||
* to it for noon, and nothing at all for midnight, then
|
||||
@ -559,8 +582,10 @@ parsetime(argc, argv)
|
||||
case NOON:
|
||||
hr += 12;
|
||||
case MIDNIGHT:
|
||||
if (runtime.tm_hour >= hr)
|
||||
if (runtime.tm_hour >= hr) {
|
||||
runtime.tm_mday++;
|
||||
runtime.tm_wday++;
|
||||
}
|
||||
runtime.tm_hour = hr;
|
||||
runtime.tm_min = 0;
|
||||
token();
|
||||
@ -571,8 +596,7 @@ parsetime(argc, argv)
|
||||
} /* ugly case statement */
|
||||
expect(EOF);
|
||||
|
||||
/*
|
||||
* adjust for daylight savings time
|
||||
/* adjust for daylight savings time
|
||||
*/
|
||||
runtime.tm_isdst = -1;
|
||||
runtimer = mktime(&runtime);
|
||||
|
||||
@ -1,7 +1,6 @@
|
||||
/*
|
||||
* at.h - header for at(1)
|
||||
* Copyright (c) 1993 by Thomas Koenig
|
||||
* All rights reserved.
|
||||
/*
|
||||
* at.h - header for at(1)
|
||||
* Copyright (C) 1993 Thomas Koenig
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -22,8 +21,6 @@
|
||||
* 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.
|
||||
*
|
||||
* $Id: parsetime.h,v 1.1 1993/12/05 11:37:17 cgd Exp $
|
||||
*/
|
||||
|
||||
time_t parsetime __P((int argc, char **argv));
|
||||
time_t parsetime(int argc, char **argv);
|
||||
|
||||
123
usr.bin/at/perm.c
Normal file
123
usr.bin/at/perm.c
Normal file
@ -0,0 +1,123 @@
|
||||
/*
|
||||
* perm.c - check user permission for at(1)
|
||||
* Copyright (C) 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 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/types.h>
|
||||
#include <errno.h>
|
||||
#include <pwd.h>
|
||||
#include <stddef.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
/* Local headers */
|
||||
|
||||
#include "privs.h"
|
||||
#include "at.h"
|
||||
|
||||
/* Macros */
|
||||
|
||||
#define MAXUSERID 10
|
||||
|
||||
/* Structures and unions */
|
||||
|
||||
|
||||
/* File scope variables */
|
||||
|
||||
static char rcsid[] = "$Id: perm.c,v 1.1 1994/05/10 18:23:08 kernel Exp $";
|
||||
|
||||
/* Function declarations */
|
||||
|
||||
static int check_for_user(FILE *fp,const char *name);
|
||||
|
||||
/* Local functions */
|
||||
|
||||
static int check_for_user(FILE *fp,const char *name)
|
||||
{
|
||||
char *buffer;
|
||||
size_t len;
|
||||
int found = 0;
|
||||
|
||||
len = strlen(name);
|
||||
buffer = mymalloc(len+2);
|
||||
|
||||
while(fgets(buffer, len+2, fp) != NULL)
|
||||
{
|
||||
if ((strncmp(name, buffer, len) == 0) &&
|
||||
(buffer[len] == '\n'))
|
||||
{
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
fclose(fp);
|
||||
free(buffer);
|
||||
return found;
|
||||
}
|
||||
/* Global functions */
|
||||
int check_permission()
|
||||
{
|
||||
FILE *fp;
|
||||
uid_t uid = geteuid();
|
||||
struct passwd *pentry;
|
||||
|
||||
if (uid==0)
|
||||
return 1;
|
||||
|
||||
if ((pentry = getpwuid(uid)) == NULL)
|
||||
{
|
||||
perror("Cannot access user database");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
PRIV_START
|
||||
|
||||
fp=fopen(PERM_PATH "at.allow","r");
|
||||
|
||||
PRIV_END
|
||||
|
||||
if (fp != NULL)
|
||||
{
|
||||
return check_for_user(fp, pentry->pw_name);
|
||||
}
|
||||
else
|
||||
{
|
||||
|
||||
PRIV_START
|
||||
|
||||
fp=fopen(PERM_PATH "at.deny", "r");
|
||||
|
||||
PRIV_END
|
||||
|
||||
if (fp != NULL)
|
||||
{
|
||||
return !check_for_user(fp, pentry->pw_name);
|
||||
}
|
||||
perror("at.deny");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
26
usr.bin/at/perm.h
Normal file
26
usr.bin/at/perm.h
Normal file
@ -0,0 +1,26 @@
|
||||
/*
|
||||
* perm.h - header for at(1)
|
||||
* Copyright (C) 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 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.
|
||||
*/
|
||||
|
||||
int check_permission();
|
||||
@ -1,7 +1,6 @@
|
||||
/*
|
||||
* privs.h - header for privileged operations
|
||||
* Copyright (c) 1993 by Thomas Koenig
|
||||
* All rights reserved.
|
||||
/*
|
||||
* privs.h - header for privileged operations
|
||||
* Copyright (C) 1993 Thomas Koenig
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -22,31 +21,44 @@
|
||||
* 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.
|
||||
*
|
||||
* $Id: privs.h,v 1.1 1993/12/05 11:37:29 cgd Exp $
|
||||
*/
|
||||
|
||||
#ifndef _PRIVS_H
|
||||
#define _PRIVS_H
|
||||
|
||||
#ifndef _USE_BSD
|
||||
#define _USE_BSD 1
|
||||
#include <unistd.h>
|
||||
#undef _USE_BSD
|
||||
#else
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
|
||||
/* Relinquish privileges temporarily for a setuid program
|
||||
#ifdef __FreeBSD__
|
||||
/*
|
||||
* setre[ug]id() not change r[ug]id for FreeBSD, but check it incorrectly
|
||||
* for this program
|
||||
*/
|
||||
#define setreuid(r, e) seteuid(e)
|
||||
#define setregid(r, e) setegid(e)
|
||||
#endif
|
||||
|
||||
/* Relinquish privileges temporarily for a setuid or setgid program
|
||||
* with the option of getting them back later. This is done by swapping
|
||||
* the real and effective userid BSD style. Call RELINQUISH_PRIVS once
|
||||
* at the beginning of the main program. This will cause all operatons
|
||||
* to be executed with the real userid. When you need the privileges
|
||||
* of the setuid invocation, call PRIV_START; when you no longer
|
||||
* of the setuid/setgid invocation, call PRIV_START; when you no longer
|
||||
* need it, call PRIV_END. Note that it is an error to call PRIV_START
|
||||
* and not PRIV_END within the same function.
|
||||
*
|
||||
* Use RELINQUISH_PRIVS_ROOT(a) if your program started out running
|
||||
* Use RELINQUISH_PRIVS_ROOT(a,b) if your program started out running
|
||||
* as root, and you want to drop back the effective userid to a
|
||||
* and the effective group id to b, with the option to get them back
|
||||
* later.
|
||||
*
|
||||
* If you no longer need root privileges, but those of some other
|
||||
* userid/groupid, you can call REDUCE_PRIV(a) when your effective
|
||||
* userid/groupid, you can call REDUCE_PRIV(a,b) when your effective
|
||||
* is the user's.
|
||||
*
|
||||
* Problems: Do not use return between PRIV_START and PRIV_END; this
|
||||
@ -65,28 +77,44 @@ extern
|
||||
#endif
|
||||
uid_t real_uid, effective_uid;
|
||||
|
||||
#ifndef MAIN
|
||||
extern
|
||||
#endif
|
||||
gid_t real_gid, effective_gid;
|
||||
|
||||
#define RELINQUISH_PRIVS { \
|
||||
real_uid = getuid(); \
|
||||
effective_uid = geteuid(); \
|
||||
setreuid(effective_uid,real_uid); \
|
||||
}
|
||||
real_uid = getuid(); \
|
||||
effective_uid = geteuid(); \
|
||||
real_gid = getgid(); \
|
||||
effective_gid = getegid(); \
|
||||
setregid(effective_gid, real_gid); \
|
||||
setreuid(effective_uid, real_uid); \
|
||||
}
|
||||
|
||||
#define RELINQUISH_PRIVS_ROOT(a) { \
|
||||
real_uid = (a); \
|
||||
effective_uid = geteuid(); \
|
||||
setreuid(effective_uid,real_uid); \
|
||||
}
|
||||
#define RELINQUISH_PRIVS_ROOT(a,b) { \
|
||||
real_uid = (a); \
|
||||
effective_uid = geteuid(); \
|
||||
real_gid = (b); \
|
||||
effective_gid = getegid(); \
|
||||
setregid(effective_gid, real_gid); \
|
||||
setreuid(effective_uid, real_uid); \
|
||||
}
|
||||
|
||||
#define PRIV_START { \
|
||||
setreuid(real_uid,effective_uid);
|
||||
#define PRIV_START {\
|
||||
setreuid(real_uid, effective_uid); \
|
||||
setregid(real_gid, effective_gid);
|
||||
|
||||
#define PRIV_END \
|
||||
setreuid(effective_uid,real_uid); \
|
||||
}
|
||||
setregid(effective_gid, real_gid); \
|
||||
setreuid(effective_uid, real_uid); \
|
||||
}
|
||||
|
||||
#define REDUCE_PRIV(a) { \
|
||||
setreuid(real_uid,effective_uid); \
|
||||
effective_uid = (a); \
|
||||
setreuid(effective_uid,real_uid); \
|
||||
}
|
||||
#define REDUCE_PRIV(a,b) {\
|
||||
setreuid(real_uid, effective_uid); \
|
||||
setregid(real_gid, effective_gid); \
|
||||
effective_uid = (a); \
|
||||
effective_gid = (b); \
|
||||
setregid(effective_gid, real_gid); \
|
||||
setreuid(effective_uid, real_uid); \
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user