Renamed from hurdids.c

1 files changed, 196 insertions, 0 deletions

diff --git a/utils/ids.c b/utils/ids.c
new file mode 100644
index 00000000..3d7acb82
--- /dev/null
+++ b/utils/ids.c
@@ -0,0 +1,196 @@
+/* Show all hurd ids
+
+   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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 2, 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <hurd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <argp.h>
+#include <unistd.h>
+#include <error.h>
+#include <ugids.h>
+#include <version.h>
+
+const char *argp_program_version = STANDARD_HURD_VERSION (hurdids);
+
+static struct argp_option options[] =
+{
+  {"terse",	't', 0, 0, "Use a shorter one-line output format"},
+  {"effective", 'e', 0, 0, "Show effective ids"},
+  {"available", 'a', 0, 0, "Show available ids"},
+  {"uids",      'u', 0, 0, "Show user ids"},
+  {"gids",      'g', 0, 0, "Show group ids"},
+  {"names",     'n', 0, 0, "Show names of uids/gids"},
+  {"values",    'v', 0, 0, "Show numeric uids/gids"},
+  {0}
+};
+static char *args_doc = "[PID]";
+static char *doc = "Show hurd uids/gids."
+"\vIf PID is suppplied, show ids in that process.";
+
+/* ---------------------------------------------------------------- */
+
+void 
+main(int argc, char *argv[])
+{
+  error_t err;
+  task_t task;
+  mach_port_t msgport;
+  int pid = -1;
+  auth_t auth = getauth ();
+  process_t proc = getproc ();
+  struct ugids ugids = UGIDS_INIT;
+  int show_eff = 0, show_avail = 0, show_uids = 0, show_gids = 0, terse = 0;
+  int show_names = 0, show_values = 0;
+
+  /* Print the given id vectors, using NAME for the prompt.  */
+  void print_ids (struct idvec *uids, struct idvec *gids, char *name)
+    {
+      if (show_uids)
+	{
+	  if (name && show_gids)
+	    printf ("%s uids: ", name);
+	  else if (show_gids)
+	    printf ("uids: ");
+	  else if (name)
+	    printf ("%s: ", name);
+	  printf ("%s\n",
+		  idvec_uids_rep (uids, show_values, show_names, " "));
+	}
+      if (show_gids)
+	{
+	  if (name && show_uids)
+	    printf ("%s gids: ", name);
+	  else if (show_uids)
+	    printf ("gids: ");
+	  else if (name)
+	    printf ("%s: ", name);
+	  printf ("%s\n", idvec_gids_rep (gids, show_values, show_names, " "));
+	}
+    }
+
+  /* Parse a command line option.  */
+  error_t parse_opt (int key, char *arg, struct argp_state *state)
+    {
+      switch (key)
+	{
+	case 'e': show_eff = 1; break;
+	case 'a': show_avail = 1; break;
+	case 'u': show_uids = 1; break;
+	case 'g': show_gids = 1; break;
+	case 'n': show_names = 1; break;
+	case 'v': show_values = 1; break;
+	case 't': terse = 1; break;
+	case ARGP_KEY_ARG:
+	  if (state->arg_num == 0)
+	    {
+	      pid = atoi (arg);
+	      break;
+	    }
+	default:
+	  return ARGP_ERR_UNKNOWN;
+	}
+      return 0;
+    }
+
+  struct argp argp = {options, parse_opt, args_doc, doc};
+
+  argp_parse (&argp, argc, argv, 0, 0, 0);
+
+  if (!show_eff && !show_avail)
+    show_eff = show_avail = 1;
+  if (!show_uids && !show_gids)
+    show_uids = show_gids = 1;
+  if (!show_names && !show_values)
+    show_names = show_values = 1;
+
+  if (pid < 0)
+    /* We get our parent's authentication instead of our own because this
+       program is usually installed setuid.  This should work even if it's
+       not installed setuid, using the auth port as authentication to the
+       msg_get_init_port rpc.  */
+    pid = getppid ();
+
+  /* Get a msgport for PID, to which we can send requests.  */
+  err = proc_getmsgport (proc, pid, &msgport);
+  if (err)
+    error (5, err, "%d: Cannot get process msgport", pid);
+
+  /* Try to get the task port to use as authentication.  */
+  err = proc_pid2task (proc, pid, &task);
+
+  /* Now fetch the auth port; if we couldn't get the task port to use for
+     authentication, we try the (old) auth port instead.  */
+  if (err)
+    err = msg_get_init_port (msgport, auth, INIT_PORT_AUTH, &auth);
+  else
+    err = msg_get_init_port (msgport, task, INIT_PORT_AUTH, &auth);
+  if (err)
+    error (6, err, "%d: Cannot get process authentication", pid);
+
+  mach_port_deallocate (mach_task_self (), msgport);
+  mach_port_deallocate (mach_task_self (), task);
+
+  /* Get the ids that AUTH represents.  */
+  err = ugids_merge_auth (&ugids, auth);
+  if (err)
+    error (10, err, "Cannot get authentication ids");
+
+  /* Print them.  */
+  if (terse)
+    /* Short output format.  */
+    {
+      /* Since we use ugids_rep to format the output, just clear any fields
+	 we don't want to show.  */
+      if (! show_eff)
+	{
+	  idvec_clear (&ugids.eff_uids);
+	  idvec_clear (&ugids.eff_gids);
+	}
+      if (! show_avail)
+	{
+	  idvec_clear (&ugids.avail_uids);
+	  idvec_clear (&ugids.avail_gids);
+	}
+      if (! show_uids)
+	{
+	  idvec_clear (&ugids.eff_uids);
+	  idvec_clear (&ugids.avail_uids);
+	}
+      if (! show_gids)
+	{
+	  idvec_clear (&ugids.eff_gids);
+	  idvec_clear (&ugids.avail_gids);
+	}
+      printf ("%s\n", ugids_rep (&ugids, show_values, show_names, 0, " ","="));
+    }
+  else
+    /* Long output format */
+    {
+      if (show_eff)
+	print_ids (&ugids.eff_uids, &ugids.eff_gids,
+		   show_avail ? "effective" : 0);
+      if (show_avail)
+	print_ids (&ugids.avail_uids, &ugids.avail_gids,
+		   show_eff ? "available" : 0);
+    }
+
+  exit (0);
+}