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Diffstat (limited to 'contrib/groupmems.shar')
| -rw-r--r-- | contrib/groupmems.shar | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/contrib/groupmems.shar b/contrib/groupmems.shar new file mode 100644 index 0000000..8472d93 --- /dev/null +++ b/contrib/groupmems.shar @@ -0,0 +1,546 @@ +#!/bin/sh +# This is a shell archive (produced by GNU sharutils 4.2.1). +# To extract the files from this archive, save it to some FILE, remove +# everything before the `!/bin/sh' line above, then type `sh FILE'. +# +# Made on 2000-05-25 14:41 CDT by <gk4@gnu.austin.ibm.com>. +# Source directory was `/home/gk4/src/groupmem'. +# +# Existing files will *not* be overwritten unless `-c' is specified. +# +# This shar contains: +# length mode name +# ------ ---------- ------------------------------------------ +# 1960 -rw-r--r-- Makefile +# 6348 -rw-r--r-- groupmems.c +# 3372 -rw------- groupmems.8 +# +save_IFS="${IFS}" +IFS="${IFS}:" +gettext_dir=FAILED +locale_dir=FAILED +first_param="$1" +for dir in $PATH +do + if test "$gettext_dir" = FAILED && test -f $dir/gettext \ + && ($dir/gettext --version >/dev/null 2>&1) + then + set `$dir/gettext --version 2>&1` + if test "$3" = GNU + then + gettext_dir=$dir + fi + fi + if test "$locale_dir" = FAILED && test -f $dir/shar \ + && ($dir/shar --print-text-domain-dir >/dev/null 2>&1) + then + locale_dir=`$dir/shar --print-text-domain-dir` + fi +done +IFS="$save_IFS" +if test "$locale_dir" = FAILED || test "$gettext_dir" = FAILED +then + echo=echo +else + TEXTDOMAINDIR=$locale_dir + export TEXTDOMAINDIR + TEXTDOMAIN=sharutils + export TEXTDOMAIN + echo="$gettext_dir/gettext -s" +fi +if touch -am -t 200112312359.59 $$.touch >/dev/null 2>&1 && test ! -f 200112312359.59 -a -f $$.touch; then + shar_touch='touch -am -t $1$2$3$4$5$6.$7 "$8"' +elif touch -am 123123592001.59 $$.touch >/dev/null 2>&1 && test ! -f 123123592001.59 -a ! -f 123123592001.5 -a -f $$.touch; then + shar_touch='touch -am $3$4$5$6$1$2.$7 "$8"' +elif touch -am 1231235901 $$.touch >/dev/null 2>&1 && test ! -f 1231235901 -a -f $$.touch; then + shar_touch='touch -am $3$4$5$6$2 "$8"' +else + shar_touch=: + echo + $echo 'WARNING: not restoring timestamps. Consider getting and' + $echo "installing GNU \`touch', distributed in GNU File Utilities..." + echo +fi +rm -f 200112312359.59 123123592001.59 123123592001.5 1231235901 $$.touch +# +if mkdir _sh10937; then + $echo 'x -' 'creating lock directory' +else + $echo 'failed to create lock directory' + exit 1 +fi +# ============= Makefile ============== +if test -f 'Makefile' && test "$first_param" != -c; then + $echo 'x -' SKIPPING 'Makefile' '(file already exists)' +else + $echo 'x -' extracting 'Makefile' '(text)' + sed 's/^X//' << 'SHAR_EOF' > 'Makefile' && +/* +# Copyright 2000, International Business Machines, Inc. +# All rights reserved. +# +# original author: George Kraft IV, gk4@us.ibm.com +# +# 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. Neither the name of International Business Machines, Inc., nor the +# names of its contributors may be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND +# CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +# BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL +# INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +X +all: groupmems +X +groupmems: groupmems.c +X cc -g -o groupmems groupmems.c -L. -lshadow +X +install: groupmems +X -/usr/sbin/groupadd groups +X install -o root -g groups -m 4770 groupmems /usr/bin +X +install.man: groupmems.8 +X install -o root -g root -m 644 groupmems.8 /usr/man/man8 +X +SHAR_EOF + (set 20 00 05 25 14 40 28 'Makefile'; eval "$shar_touch") && + chmod 0644 'Makefile' || + $echo 'restore of' 'Makefile' 'failed' + if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \ + && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then + md5sum -c << SHAR_EOF >/dev/null 2>&1 \ + || $echo 'Makefile:' 'MD5 check failed' +b46cf7ef8d59149093c011ced3f3103c Makefile +SHAR_EOF + else + shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'Makefile'`" + test 1960 -eq "$shar_count" || + $echo 'Makefile:' 'original size' '1960,' 'current size' "$shar_count!" + fi +fi +# ============= groupmems.c ============== +if test -f 'groupmems.c' && test "$first_param" != -c; then + $echo 'x -' SKIPPING 'groupmems.c' '(file already exists)' +else + $echo 'x -' extracting 'groupmems.c' '(text)' + sed 's/^X//' << 'SHAR_EOF' > 'groupmems.c' && +/* +X * Copyright 2000, International Business Machines, Inc. +X * All rights reserved. +X * +X * original author: George Kraft IV, gk4@us.ibm.com +X * +X * Redistribution and use in source and binary forms, with or without +X * modification, are permitted provided that the following conditions +X * are met: +X * +X * 1. Redistributions of source code must retain the above copyright +X * notice, this list of conditions and the following disclaimer. +X * 2. Redistributions in binary form must reproduce the above copyright +X * notice, this list of conditions and the following disclaimer in the +X * documentation and/or other materials provided with the distribution. +X * 3. Neither the name of International Business Machines, Inc., nor the +X * names of its contributors may be used to endorse or promote products +X * derived from this software without specific prior written permission. +X * +X * THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND +X * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +X * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +X * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL +X * INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE +X * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +X * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +X * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +X * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +X * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +X * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +X * SUCH DAMAGE. +X */ +/* +** +** Utility "groupmem" adds and deletes members from a user's group. +** +** Setup (as "root"): +** +** groupadd -r groups +** chmod 2770 groupmems +** chown root.groups groupmems +** groupmems -g groups -a gk4 +** +** Usage (as "gk4"): +** +** groupmems -a olive +** groupmems -a jordan +** groupmems -a meghan +** groupmems -a morgan +** groupmems -a jake +** groupmems -l +** groupmems -d jake +** groupmems -l +*/ +X +#include <stdio.h> +#include <pwd.h> +#include <grp.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include "defines.h" +#include "groupio.h" +X +/* Exit Status Values */ +X +#define EXIT_SUCCESS 0 /* success */ +#define EXIT_USAGE 1 /* invalid command syntax */ +#define EXIT_GROUP_FILE 2 /* group file access problems */ +#define EXIT_NOT_ROOT 3 /* not superuser */ +#define EXIT_NOT_EROOT 4 /* not effective superuser */ +#define EXIT_NOT_PRIMARY 5 /* not primary owner of group */ +#define EXIT_NOT_MEMBER 6 /* member of group does not exist */ +#define EXIT_MEMBER_EXISTS 7 /* member of group already exists */ +X +#define TRUE 1 +#define FALSE 0 +X +/* Globals */ +X +extern int optind; +extern char *optarg; +static char *adduser = NULL; +static char *deluser = NULL; +static char *thisgroup = NULL; +static int purge = FALSE; +static int list = FALSE; +static int exclusive = 0; +X +static int isroot(void) { +X return getuid() ? FALSE : TRUE; +} +X +static int isgroup(void) { +X gid_t g = getgid(); +X struct group *grp = getgrgid(g); +X +X return TRUE; +} +X +static char *whoami(void) { +X struct group *grp = getgrgid(getgid()); +X struct passwd *usr = getpwuid(getuid()); +X +X if (0 == strcmp(usr->pw_name, grp->gr_name)) { +X return (char *)strdup(usr->pw_name); +X } else { +X return NULL; +X } +} +X +static void +addtogroup(char *user, char **members) { +X int i; +X char **pmembers; +X +X for (i = 0; NULL != members[i]; i++ ) { +X if (0 == strcmp(user, members[i])) { +X fprintf(stderr, "Member already exists\n"); +X exit(EXIT_MEMBER_EXISTS); +X } +X } +X +X if (0 == i) { +X pmembers = (char **)calloc(2, sizeof(char *)); +X } else { +X pmembers = (char **)realloc(members, sizeof(char *)*(i+1)); +X } +X +X *members = *pmembers; +X members[i] = user; +X members[i+1] = NULL; +} +X +static void +rmfromgroup(char *user, char **members) { +X int i; +X int found = FALSE; +X +X i = 0; +X while (!found && NULL != members[i]) { +X if (0 == strcmp(user, members[i])) { +X found = TRUE; +X } else { +X i++; +X } +X } +X +X while (found && NULL != members[i]) { +X members[i] = members[++i]; +X } +X +X if (!found) { +X fprintf(stderr, "Member to remove could not be found\n"); +X exit(EXIT_NOT_MEMBER); +X } +} +X +static void +nomembers(char **members) { +X int i; +X +X for (i = 0; NULL != members[i]; i++ ) { +X members[i] = NULL; +X } +} +X +static void +members(char **members) { +X int i; +X +X for (i = 0; NULL != members[i]; i++ ) { +X printf("%s ", members[i]); +X +X if (NULL == members[i+1]) { +X printf("\n"); +X } else { +X printf(" "); +X } +X } +} +X +static void usage(void) { +X fprintf(stderr, "usage: groupmems -a username | -d username | -D | -l [-g groupname]\n"); +X exit(EXIT_USAGE); +} +X +main(int argc, char **argv) { +X int arg, i; +X char *name; +X struct group *grp; +X +X while ((arg = getopt(argc, argv, "a:d:g:Dl")) != EOF) { +X switch (arg) { +X case 'a': +X adduser = strdup(optarg); +X ++exclusive; +X break; +X case 'd': +X deluser = strdup(optarg); +X ++exclusive; +X break; +X case 'g': +X thisgroup = strdup(optarg); +X break; +X case 'D': +X purge = TRUE; +X ++exclusive; +X break; +X case 'l': +X list = TRUE; +X ++exclusive; +X break; +X default: +X usage(); +X } +X } +X +X if (exclusive > 1 || optind < argc) { +X usage(); +X } +X +X if (!isroot() && NULL != thisgroup) { +X fprintf(stderr, "Only root can add members to different groups\n"); +X exit(EXIT_NOT_ROOT); +X } else if (isroot() && NULL != thisgroup) { +X name = thisgroup; +X } else if (!isgroup()) { +X fprintf(stderr, "Group access is required\n"); +X exit(EXIT_NOT_EROOT); +X } else if (NULL == (name = whoami())) { +X fprintf(stderr, "Not primary owner of current group\n"); +X exit(EXIT_NOT_PRIMARY); +X } +X +X if (!gr_lock()) { +X fprintf(stderr, "Unable to lock group file\n"); +X exit(EXIT_GROUP_FILE); +X } +X +X if (!gr_open(O_RDWR)) { +X fprintf(stderr, "Unable to open group file\n"); +X exit(EXIT_GROUP_FILE); +X } +X +X grp = (struct group *)gr_locate(name); +X +X if (NULL != adduser) { +X addtogroup(adduser, grp->gr_mem); +X gr_update(grp); +X } else if (NULL != deluser) { +X rmfromgroup(deluser, grp->gr_mem); +X gr_update(grp); +X } else if (purge) { +X nomembers(grp->gr_mem); +X gr_update(grp); +X } else if (list) { +X members(grp->gr_mem); +X } +X +X if (!gr_close()) { +X fprintf(stderr, "Cannot close group file\n"); +X exit(EXIT_GROUP_FILE); +X } +X +X gr_unlock(); +X +X exit(EXIT_SUCCESS); +} +X +/* EOF */ +SHAR_EOF + (set 20 00 05 25 14 36 38 'groupmems.c'; eval "$shar_touch") && + chmod 0644 'groupmems.c' || + $echo 'restore of' 'groupmems.c' 'failed' + if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \ + && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then + md5sum -c << SHAR_EOF >/dev/null 2>&1 \ + || $echo 'groupmems.c:' 'MD5 check failed' +f0dd68f8d762d89d24d3ce1f4141f981 groupmems.c +SHAR_EOF + else + shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.c'`" + test 6348 -eq "$shar_count" || + $echo 'groupmems.c:' 'original size' '6348,' 'current size' "$shar_count!" + fi +fi +# ============= groupmems.8 ============== +if test -f 'groupmems.8' && test "$first_param" != -c; then + $echo 'x -' SKIPPING 'groupmems.8' '(file already exists)' +else + $echo 'x -' extracting 'groupmems.8' '(text)' + sed 's/^X//' << 'SHAR_EOF' > 'groupmems.8' && +X.\" +X.\" Copyright 2000, International Business Machines, Inc. +X.\" All rights reserved. +X.\" +X.\" original author: George Kraft IV, gk4@us.ibm.com +X.\" +X.\" Redistribution and use in source and binary forms, with or without +X.\" modification, are permitted provided that the following conditions +X.\" are met: +X.\" +X.\" 1. Redistributions of source code must retain the above copyright +X.\" notice, this list of conditions and the following disclaimer. +X.\" 2. Redistributions in binary form must reproduce the above copyright +X.\" notice, this list of conditions and the following disclaimer in the +X.\" documentation and/or other materials provided with the distribution. +X.\" 3. Neither the name of International Business Machines, Inc., nor the +X.\" names of its contributors may be used to endorse or promote products +X.\" derived from this software without specific prior written permission. +X.\" +X.\" THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND +X.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +X.\" BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +X.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL +X.\" INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE +X.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +X.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +X.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +X.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +X.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +X.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +X.\" SUCH DAMAGE. +X.\" +X.\" $Id$ +X.\" +X.TH GROUPMEMS 8 +X.SH NAME +groupmems \- Administer members of a user's primary group +X.SH SYNOPSIS +X.B groupmems +\fB-a\fI user_name \fR | +\fB-d\fI user_name \fR | +\fB-l\fR | +\fB-D\fR | +[\fB-g\fI group_name \fR] +X.SH DESCRIPTION +The \fBgroupmems\fR utility allows a user to administer their own +group membership list without the requirement of superuser privileges. +The \fBgroupmems\fR utility is for systems that configure its users to +be in their own name sake primary group (i.e., guest / guest). +X.P +Only the superuser, as administrator, can use \fBgroupmems\fR to alter +the memberships of other groups. +X.IP "\fB-a \fIuser_name\fR" +Add a new user to the group membership list. +X.IP "\fB-d \fIuser_name\fR" +Delete a user from the group membership list. +X.IP "\fB-l\fR" +List the group membership list. +X.IP "\fB-D\fR" +Delete all users from the group membership list. +X.IP "\fB-g \fIgroup_name\fR" +The superuser can specify which group membership list to modify. +X.SH SETUP +The \fBgroupmems\fR executable should be in mode \fB2770\fR as user \fBroot\fR +and in group \fBgroups\fR. The system administrator can add users to +group groups to allow or disallow them using the \fBgroupmems\fR utility +to manager their own group membership list. +X.P +X $ groupadd -r groups +X.br +X $ chmod 2770 groupmems +X.br +X $ chown root.groups groupmems +X.br +X $ groupmems -g groups -a gk4 +X.SH FILES +/etc/group +X.br +/etc/gshadow +X.SH SEE ALSO +X.BR chfn (1), +X.BR chsh (1), +X.BR useradd (8), +X.BR userdel (8), +X.BR usermod (8), +X.BR passwd (1), +X.BR groupadd (8), +X.BR groupdel (8) +X.SH AUTHOR +George Kraft IV (gk4@us.ibm.com) +X.\" EOF +SHAR_EOF + (set 20 00 05 25 14 38 23 'groupmems.8'; eval "$shar_touch") && + chmod 0600 'groupmems.8' || + $echo 'restore of' 'groupmems.8' 'failed' + if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \ + && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then + md5sum -c << SHAR_EOF >/dev/null 2>&1 \ + || $echo 'groupmems.8:' 'MD5 check failed' +181e6cd3a3c9d3df320197fa2cde2b4a groupmems.8 +SHAR_EOF + else + shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.8'`" + test 3372 -eq "$shar_count" || + $echo 'groupmems.8:' 'original size' '3372,' 'current size' "$shar_count!" + fi +fi +rm -fr _sh10937 +exit 0 |