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/* 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 <pwd.h>
#include <grp.h>
#include <version.h>
#include <error.h>
#include <idvec.h>
const char *argp_program_version = STANDARD_HURD_VERSION (hurdids);
static struct argp_option options[] =
{
{"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"},
{"ids", 'i', 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;
int pid = -1;
auth_t auth = getauth ();
process_t proc = getproc ();
int show_eff = 0, show_avail = 0, show_uids = 0, show_gids = 0;
int show_names = 0, show_ids = 0;
struct idvec euids = { 0 }, egids = { 0 };
struct idvec auids = { 0 }, agids = { 0 };
/* Print a given id vector, using NAME for the prompt. */
void print_ids (struct idvec *uids, struct idvec *gids, char *name)
{
int i;
if (show_uids)
{
if (name && show_gids)
printf ("%s uids: ", name);
else if (show_gids)
printf ("uids: ");
else if (name)
printf ("%s: ", name);
for (i = 0; i < uids->num; i++)
{
uid_t uid = uids->ids[i];
struct passwd *pw = show_names ? getpwuid (uid) : 0;
if (i > 0)
putchar (' ');
if (pw)
if (show_ids)
printf ("%d(%s)", uid, pw->pw_name);
else
printf ("%s", pw->pw_name);
else
printf ("%d", uid);
}
putchar ('\n');
}
if (show_gids)
{
if (name && show_uids)
printf ("%s gids: ", name);
else if (show_uids)
printf ("gids: ");
else if (name)
printf ("%s: ", name);
for (i = 0; i < gids->num; i++)
{
gid_t gid = gids->ids[i];
struct group *gr = show_names ? getgrgid (gid) : 0;
if (i > 0)
putchar (' ');
if (gr)
if (show_ids)
printf ("%d(%s)", gid, gr->gr_name);
else
printf ("%s", gr->gr_name);
else
printf ("%d", gid);
}
putchar ('\n');
}
}
/* 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 'i': show_ids = 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_ids)
show_names = show_ids = 1;
if (pid >= 0)
/* Get the auth port from PID instead of using our own. */
{
mach_port_t msgport;
task_t task;
err = proc_getmsgport (proc, pid, &msgport);
if (err)
error (5, err, "%d: Cannot get process msgport", pid);
err = proc_pid2task (proc, pid, &task);
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 = idvec_merge_auth (&euids, &auids, &egids, &agids, auth);
if (err)
error (10, err, "Cannot get authentication ids");
/* Print them. */
if (show_eff)
print_ids (&euids, &egids, show_avail ? "effective" : 0);
if (show_avail)
print_ids (&auids, &agids, show_eff ? "available" : 0);
exit (0);
}
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