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-rw-r--r--contrib/groupmems.shar465
1 files changed, 465 insertions, 0 deletions
diff --git a/contrib/groupmems.shar b/contrib/groupmems.shar
new file mode 100644
index 0000000..62e9b48
--- /dev/null
+++ b/contrib/groupmems.shar
@@ -0,0 +1,465 @@
+#!/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
+ $echo 'x -' extracting 'Makefile' '(text)'
+ sed 's/^X//' << 'SHAR_EOF' > 'Makefile' &&
+/*
+# SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+# SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+# SPDX-License-Identifier: BSD-3-Clause
+#
+X
+all: groupmems
+X
+groupmems: groupmems.c
+X cc -g -o groupmems groupmems.c -L. -lshadow
+X
+install: groupmems
+X -/usr/sbin/groupadd groups
+X install -o root -g groups -m 4770 groupmems /usr/bin
+X
+install.man: groupmems.8
+X install -o root -g root -m 644 groupmems.8 /usr/man/man8
+X
+SHAR_EOF
+ (set 20 00 05 25 14 40 28 'Makefile'; eval "$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 * SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X * SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X * SPDX-License-Identifier: BSD-3-Clause
+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.\" SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X.\" SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X.\" SPDX-License-Identifier: BSD-3-Clause
+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
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