Adding upstream version 8.32.upstream/8.32upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 145 insertions, 0 deletions

diff --git a/src/groups.c b/src/groups.c
new file mode 100644
index 0000000..c866e13
--- /dev/null
+++ b/src/groups.c
@@ -0,0 +1,145 @@
+/* groups -- print the groups a user is in
+   Copyright (C) 1989-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by James Youngman based on id.c and groups.sh,
+   which were written by Arnold Robbins and David MacKenzie. */
+
+#include <config.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+#include <getopt.h>
+
+#include "system.h"
+#include "die.h"
+#include "group-list.h"
+#include "quote.h"
+
+/* The official name of this program (e.g., no 'g' prefix).  */
+#define PROGRAM_NAME "groups"
+
+#define AUTHORS \
+  proper_name ("David MacKenzie"), \
+  proper_name ("James Youngman")
+
+
+static struct option const longopts[] =
+{
+  {GETOPT_HELP_OPTION_DECL},
+  {GETOPT_VERSION_OPTION_DECL},
+  {NULL, 0, NULL, 0}
+};
+
+void
+usage (int status)
+{
+  if (status != EXIT_SUCCESS)
+    emit_try_help ();
+  else
+    {
+      printf (_("Usage: %s [OPTION]... [USERNAME]...\n"), program_name);
+      fputs (_("\
+Print group memberships for each USERNAME or, if no USERNAME is specified, for\
+\n\
+the current process (which may differ if the groups database has changed).\n"),
+             stdout);
+      fputs (HELP_OPTION_DESCRIPTION, stdout);
+      fputs (VERSION_OPTION_DESCRIPTION, stdout);
+      emit_ancillary_info (PROGRAM_NAME);
+    }
+  exit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+  int optc;
+  bool ok = true;
+  gid_t rgid, egid;
+  uid_t ruid;
+
+  initialize_main (&argc, &argv);
+  set_program_name (argv[0]);
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+
+  atexit (close_stdout);
+
+  /* Processing the arguments this way makes groups.c behave differently to
+   * groups.sh if one of the arguments is "--".
+   */
+  while ((optc = getopt_long (argc, argv, "", longopts, NULL)) != -1)
+    {
+      switch (optc)
+        {
+        case_GETOPT_HELP_CHAR;
+        case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+        default:
+          usage (EXIT_FAILURE);
+        }
+    }
+
+  if (optind == argc)
+    {
+      /* No arguments.  Divulge the details of the current process. */
+      uid_t NO_UID = -1;
+      gid_t NO_GID = -1;
+
+      errno = 0;
+      ruid = getuid ();
+      if (ruid == NO_UID && errno)
+        die (EXIT_FAILURE, errno, _("cannot get real UID"));
+
+      errno = 0;
+      egid = getegid ();
+      if (egid == NO_GID && errno)
+        die (EXIT_FAILURE, errno, _("cannot get effective GID"));
+
+      errno = 0;
+      rgid = getgid ();
+      if (rgid == NO_GID && errno)
+        die (EXIT_FAILURE, errno, _("cannot get real GID"));
+
+      if (!print_group_list (NULL, ruid, rgid, egid, true, ' '))
+        ok = false;
+      putchar ('\n');
+    }
+  else
+    {
+      /* At least one argument.  Divulge the details of the specified users.  */
+      for ( ; optind < argc; optind++)
+        {
+          struct passwd *pwd = getpwnam (argv[optind]);
+          if (pwd == NULL)
+            {
+              error (0, 0, _("%s: no such user"), quote (argv[optind]));
+              ok = false;
+              continue;
+            }
+          ruid = pwd->pw_uid;
+          rgid = egid = pwd->pw_gid;
+
+          printf ("%s : ", argv[optind]);
+          if (!print_group_list (argv[optind], ruid, rgid, egid, true, ' '))
+            ok = false;
+          putchar ('\n');
+        }
+    }
+
+  return ok ? EXIT_SUCCESS : EXIT_FAILURE;
+}