mirror of
https://git.busybox.net/busybox.git
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This patch makes the id command SuS3 compliant and provides a groups
applet via an alias to id. - Add G option - Pedantic option checking - If effective group and user differs from the real one show both. id. - Alias id -Gn to groups applet
This commit is contained in:
Glenn L McGrath
parent
6f9a7783ce
commit
d14084019f
314
patches/id_groups_alias.patch
Normal file
314
patches/id_groups_alias.patch
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@ -0,0 +1,314 @@
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Index: coreutils/Config.in
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===================================================================
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RCS file: /var/cvs/busybox/coreutils/Config.in,v
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retrieving revision 1.24
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diff -u -r1.24 Config.in
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--- a/coreutils/Config.in 15 Mar 2004 08:28:19 -0000 1.24
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+++ b/coreutils/Config.in 1 May 2004 11:39:04 -0000
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@@ -218,6 +218,14 @@
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help
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id displays the current user and group ID names.
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+config CONFIG_FEATURE_ID_GROUPS_ALIAS
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+ bool " Support 'groups' as alias to 'id -Gn'"
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+ default y
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+ depends on CONFIG_ID
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+ help
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+ Print the groups a user is in. This is an alias to 'id -Gn' on
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+ most systems.
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+
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config CONFIG_INSTALL
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bool "install"
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default n
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Index: coreutils/id.c
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===================================================================
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RCS file: /var/cvs/busybox/coreutils/id.c,v
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retrieving revision 1.24
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diff -u -r1.24 id.c
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--- a/coreutils/id.c 15 Mar 2004 08:28:20 -0000 1.24
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+++ b/coreutils/id.c 1 May 2004 11:39:05 -0000
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@@ -3,6 +3,8 @@
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* Mini id implementation for busybox
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*
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* Copyright (C) 2000 by Randolph Chung <tausq@debian.org>
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+ * Copyright (C) 2004 by Tony J. White <tjw@tjw.org>
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+ * Copyright (C) 2004 by Glenn McGrath <bug1@iinet.net.au>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -20,7 +22,6 @@
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*
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*/
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-/* BB_AUDIT SUSv3 _NOT_ compliant -- option -G is not currently supported. */
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#include "busybox.h"
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#include <stdio.h>
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@@ -33,78 +34,153 @@
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#include <flask_util.h>
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#endif
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-#define JUST_USER 1
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-#define JUST_GROUP 2
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-#define PRINT_REAL 4
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-#define NAME_NOT_NUMBER 8
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+#define ID_OPT_JUST_USER 1
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+#define ID_OPT_JUST_GROUP 2
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+#define ID_OPT_ALL_GROUPS 4
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+#define ID_OPT_PRINT_REAL 8
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+#define ID_OPT_NAME_NOT_NUMBER 16
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+
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+static void print_groups(unsigned long flags, const char sep)
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+{
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+ gid_t gids[64];
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+ int gid_count;
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+ int i;
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+
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+ gid_count = getgroups(64, gids);
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+
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+ for (i = 0; i < gid_count; i++) {
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+ struct group *tmp_grp;
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+
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+ if (i != 0) {
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+ putchar(sep);
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+ }
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+ tmp_grp = getgrgid(gids[i]);
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+ if (flags & ID_OPT_NAME_NOT_NUMBER) {
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+ if (tmp_grp == NULL) {
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+ continue;
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+ }
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+ printf("%s", tmp_grp->gr_name);
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+ } else {
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+ printf("%u", gids[i]);
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+ if (!(flags & ID_OPT_ALL_GROUPS)) {
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+ if (tmp_grp == NULL) {
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+ continue;
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+ }
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+ printf("(%s)", tmp_grp->gr_name);
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+ }
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+ }
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+ }
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+}
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extern int id_main(int argc, char **argv)
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{
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- char user[9], group[9];
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- long pwnam, grnam;
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- int uid, gid;
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- int flags;
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+ struct group *grp;
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+ struct passwd *usr;
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+ unsigned long flags;
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+ uid_t uid;
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+ uid_t gid;
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+ uid_t euid;
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+ uid_t egid;
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#ifdef CONFIG_SELINUX
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int is_flask_enabled_flag = is_flask_enabled();
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#endif
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- flags = bb_getopt_ulflags(argc, argv, "ugrn");
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+ bb_opt_complementaly = "u~gG:g~uG:G~ug:~n";
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+ flags = bb_getopt_ulflags(argc, argv, "ugGrn");
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- if (((flags & (JUST_USER | JUST_GROUP)) == (JUST_USER | JUST_GROUP))
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- || (argc > optind + 1)
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- ) {
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+ /* Check one and only one context option was given */
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+ if ((flags & 0x80000000UL) ||
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+ (flags & (ID_OPT_PRINT_REAL | ID_OPT_ALL_GROUPS)) ||
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+ ((flags & (ID_OPT_PRINT_REAL | ID_OPT_NAME_NOT_NUMBER)) ==
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+ (ID_OPT_PRINT_REAL | ID_OPT_NAME_NOT_NUMBER))) {
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bb_show_usage();
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}
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+#ifdef CONFIG_FEATURE_ID_GROUPS_ALIAS
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+ /* groups command is an alias for 'id -Gn' */
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+ if (bb_applet_name[0] == 'g') {
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+ flags |= (ID_OPT_ALL_GROUPS + ID_OPT_NAME_NOT_NUMBER);
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+ }
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+#endif
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+
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+ uid = getuid();
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+ gid = getgid();
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+ euid = geteuid();
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+ egid = getegid();
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+
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+ if (flags & ID_OPT_PRINT_REAL) {
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+ euid = uid;
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+ egid = gid;
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+ }
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+
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if (argv[optind] == NULL) {
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- if (flags & PRINT_REAL) {
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- uid = getuid();
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- gid = getgid();
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- } else {
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- uid = geteuid();
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- gid = getegid();
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- }
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- my_getpwuid(user, uid);
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+ usr = getpwuid(euid);
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+ grp = getgrgid(egid);
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} else {
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- safe_strncpy(user, argv[optind], sizeof(user));
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- gid = my_getpwnamegid(user);
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+ usr = getpwnam(argv[optind]);
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+ grp = getgrnam(argv[optind]);
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}
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- my_getgrgid(group, gid);
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- pwnam=my_getpwnam(user);
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- grnam=my_getgrnam(group);
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+ if (usr == NULL) {
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+ bb_perror_msg_and_die("cannot find user name");
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+ }
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+ if (grp == NULL) {
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+ bb_perror_msg_and_die("cannot find group name");
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+ }
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- if (flags & (JUST_GROUP | JUST_USER)) {
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- char *s = group;
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- if (flags & JUST_USER) {
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- s = user;
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- grnam = pwnam;
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+ if (flags & ID_OPT_JUST_USER) {
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+ if (flags & ID_OPT_NAME_NOT_NUMBER) {
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+ printf("%s", grp->gr_name);
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+ } else {
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+ printf("%u", euid);
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}
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- if (flags & NAME_NOT_NUMBER) {
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- puts(s);
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+ }
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+ else if (flags & ID_OPT_JUST_GROUP) {
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+ if (flags & ID_OPT_NAME_NOT_NUMBER) {
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+ printf("%s", grp->gr_name);
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} else {
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- printf("%ld\n", grnam);
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+ printf("%u", egid);
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}
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+ }
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+ else if (flags & ID_OPT_ALL_GROUPS) {
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+ print_groups(flags, ' ');
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} else {
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-#ifdef CONFIG_SELINUX
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- printf("uid=%ld(%s) gid=%ld(%s)", pwnam, user, grnam, group);
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- if(is_flask_enabled_flag)
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- {
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- security_id_t mysid = getsecsid();
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- char context[80];
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- int len = sizeof(context);
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- context[0] = '\0';
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- if(security_sid_to_context(mysid, context, &len))
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- strcpy(context, "unknown");
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- printf(" context=%s\n", context);
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- }
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- else
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- printf("\n");
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-#else
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- printf("uid=%ld(%s) gid=%ld(%s)\n", pwnam, user, grnam, group);
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-#endif
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+ printf("uid=%u(%s) gid=%u(%s)", uid, usr->pw_name, gid, grp->gr_name);
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+ if (uid != euid) {
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+ struct passwd *eusr;
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+ printf(" euid=%u", euid);
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+ eusr = getpwuid(euid);
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+ if (eusr != NULL) {
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+ printf("(%s)", eusr->pw_name);
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+ }
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+ }
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+ if (gid != egid) {
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+ struct group *egrp;
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+ printf(" egid=%u", egid);
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+ egrp = getgrgid(egid);
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+ if (egrp != NULL) {
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+ printf("(%s)", egrp->gr_name);
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+ }
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+ }
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+ printf(" groups=");
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+ print_groups(flags, ',');
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+ }
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+#ifdef CONFIG_SELINUX
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+ if (is_flask_enabled_flag)
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+ {
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+ security_id_t mysid = getsecsid();
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+ char context[80];
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+ int len = sizeof(context);
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+
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+ context[0] = '\0';
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+ if (security_sid_to_context(mysid, len, &len)) {
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+ strcpy(context, "unknown");
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+ }
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+ printf(" context=%s", context);
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}
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+#endif
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+ putchar('\n');
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bb_fflush_stdout_and_exit(0);
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}
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Index: include/applets.h
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===================================================================
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RCS file: /var/cvs/busybox/include/applets.h,v
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retrieving revision 1.113
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diff -u -r1.113 applets.h
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--- a/include/applets.h 6 Apr 2004 16:59:43 -0000 1.113
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+++ b/include/applets.h 1 May 2004 11:39:06 -0000
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@@ -232,6 +232,9 @@
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#ifdef CONFIG_GREP
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APPLET(grep, grep_main, _BB_DIR_BIN, _BB_SUID_NEVER)
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#endif
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+#if defined(CONFIG_FEATURE_ID_GROUPS_ALIAS)
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+ APPLET(groups, id_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
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+#endif
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#ifdef CONFIG_GUNZIP
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APPLET(gunzip, gunzip_main, _BB_DIR_BIN, _BB_SUID_NEVER)
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#endif
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Index: include/usage.h
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===================================================================
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RCS file: /var/cvs/busybox/include/usage.h,v
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retrieving revision 1.207
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diff -u -r1.207 usage.h
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--- a/include/usage.h 14 Apr 2004 17:59:21 -0000 1.207
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+++ b/include/usage.h 1 May 2004 11:39:10 -0000
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@@ -800,6 +800,16 @@
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"$ grep ^[rR]oo. /etc/passwd\n" \
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"root:x:0:0:root:/root:/bin/bash\n"
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+#define groups_trivial_usage \
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+ " [USERNAME]"
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+#define groups_full_usage \
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+ "Print all group names that USERNAME is a member of."
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+#define groups_example_usage \
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+ "$ groups\n" \
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+ "andersen users\n" \
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+ "$ groups tjw\n" \
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+ "tjw users\n"
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+
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#define gunzip_trivial_usage \
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"[OPTION]... FILE"
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#define gunzip_full_usage \
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@@ -1035,7 +1045,7 @@
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#endif
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#define id_trivial_usage \
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- "[OPTIONS]... [USERNAME]"
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+ "[-Ggu[nr]]] [USERNAME]"
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#define id_full_usage \
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"Print information for USERNAME or the current user\n\n" \
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"Options:\n" \
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@@ -1043,10 +1053,11 @@
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"\t-g\tprints only the group ID\n" \
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"\t-u\tprints only the user ID\n" \
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"\t-n\tprint a name instead of a number\n" \
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- "\t-r\tprints the real user ID instead of the effective ID"
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+ "\t-r\tprints the real user ID instead of the effective ID\n" \
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+ "\t-G\tprints all groups the user belongs to"
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#define id_example_usage \
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"$ id\n" \
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- "uid=1000(andersen) gid=1000(andersen)\n"
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+ "uid=1000(andersen) gid=1000(andersen) groups=1000(andersen),100(users)\n"
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#ifdef CONFIG_FEATURE_IFCONFIG_SLIP
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#define USAGE_SIOCSKEEPALIVE(a) a
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Reference in New Issue
Block a user