2e008fb91f
throughout. * tty.cc (tty::common_init): Remove call to SetKernelObjectSecurity and edit some comments. * cygheap.h (init_cygheap::ctty): Add new element. * devices.in (device::parse): Remove special handling for /dev/tty. * devices.cc: Regenerate. * dtable.cc (build_fh_pc): Don't reset /dev/tty device. Let the device opener do that. * fhandler_termios.cc (tty_min::set_ctty): Redefine to _pinfo class. * fhandler_tty.cc (fhandler_tty_common::set_close_on_exec): Avoid setting noninherit flag for ctty. * tty.h: Move BOOLs to bools. (tty_min::set_ctty): Redeclare to _pinfo class. * pinfo.cc (_pinfo::set_ctty): Define new function based on tty_min::set_ctty. Change first argument from tty number to tty_min class. * pinfo.h (_pinfo::set_ctty): Declare. * fhandler_console.cc (fhandler_console::get_tty_stuff): Reflect move of set_ctty to _pinfo class. * fhandler_tty.cc (fhandler_tty_slave::open): Treat FH_TTY specially. Use saved cygheap value if it exists. Otherwise convert to real device and save on first time open. (fhandler_tty_common::dup): Potentially set controlling tty if duping a slave tty. * syscalls.cc (setsid): Close controlling tty in cygheap. * tty.cc: Change some BOOLs to bools.
315 lines
7.6 KiB
C++
315 lines
7.6 KiB
C++
/* passwd.cc: getpwnam () and friends
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Copyright 1996, 1997, 1998, 2001, 2002, 2003 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <stdlib.h>
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#include <pwd.h>
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#include <stdio.h>
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#include "cygerrno.h"
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#include "security.h"
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#include "path.h"
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#include "fhandler.h"
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#include "dtable.h"
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#include "pinfo.h"
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#include "cygheap.h"
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#include <sys/termios.h>
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#include "pwdgrp.h"
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/* Read /etc/passwd only once for better performance. This is done
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on the first call that needs information from it. */
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passwd *passwd_buf;
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/* FIXME: This really should use a constructor, but they are slow */
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static pwdgrp pr (passwd_buf);
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/* Position in the passwd cache */
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#define pw_pos _reent_winsup ()->_pw_pos
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/* Parse /etc/passwd line into passwd structure. */
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bool
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pwdgrp::parse_passwd ()
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{
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# define res (*passwd_buf)[curr_lines]
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res.pw_name = next_str (':');
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res.pw_passwd = next_str (':');
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if (!next_num (res.pw_uid))
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return false;
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if (!next_num (res.pw_gid))
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return false;
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res.pw_comment = NULL;
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res.pw_gecos = next_str (':');
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res.pw_dir = next_str (':');
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res.pw_shell = next_str (':');
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return true;
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# undef res
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}
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/* Read in /etc/passwd and save contents in the password cache.
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This sets pr to loaded or emulated so functions in this file can
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tell that /etc/passwd has been read in or will be emulated. */
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void
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pwdgrp::read_passwd ()
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{
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load ("/etc/passwd");
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char strbuf[128] = "";
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bool searchentry = true;
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struct passwd *pw;
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if (wincap.has_security ())
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{
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/* must be static */
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static char NO_COPY pretty_ls[] = "????????:*:-1:-1:";
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add_line (pretty_ls);
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cygsid tu = cygheap->user.sid ();
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tu.string (strbuf);
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if (myself->uid == ILLEGAL_UID)
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searchentry = !internal_getpwsid (tu);
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}
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else if (myself->uid == ILLEGAL_UID)
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searchentry = !internal_getpwuid (DEFAULT_UID);
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if (searchentry &&
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(!(pw = internal_getpwnam (cygheap->user.name ())) ||
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(myself->uid != ILLEGAL_UID &&
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myself->uid != (__uid32_t) pw->pw_uid &&
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!internal_getpwuid (myself->uid))))
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{
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static char linebuf[1024]; // must be static and
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// should not be NO_COPY
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(void) cygheap->user.ontherange (CH_HOME, NULL);
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snprintf (linebuf, sizeof (linebuf), "%s:*:%lu:%lu:,%s:%s:/bin/sh",
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cygheap->user.name (),
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myself->uid == ILLEGAL_UID ? UNKNOWN_UID : myself->uid,
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myself->gid,
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strbuf, getenv ("HOME") ?: "");
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debug_printf ("Completing /etc/passwd: %s", linebuf);
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add_line (linebuf);
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}
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return;
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}
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struct passwd *
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internal_getpwsid (cygpsid &sid)
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{
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struct passwd *pw;
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char *ptr1, *ptr2, *endptr;
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char sid_string[128] = {0,','};
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pr.refresh (false);
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if (sid.string (sid_string + 2))
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{
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endptr = strchr (sid_string + 2, 0) - 1;
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for (int i = 0; i < pr.curr_lines; i++)
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if ((pw = passwd_buf + i)->pw_dir > pw->pw_gecos + 8)
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for (ptr1 = endptr, ptr2 = pw->pw_dir - 2;
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*ptr1 == *ptr2; ptr2--)
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if (!*--ptr1)
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return pw;
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}
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return NULL;
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}
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struct passwd *
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internal_getpwuid (__uid32_t uid, bool check)
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{
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pr.refresh (check);
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for (int i = 0; i < pr.curr_lines; i++)
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if (uid == (__uid32_t) passwd_buf[i].pw_uid)
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return passwd_buf + i;
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return NULL;
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}
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struct passwd *
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internal_getpwnam (const char *name, bool check)
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{
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pr.refresh (check);
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for (int i = 0; i < pr.curr_lines; i++)
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/* on Windows NT user names are case-insensitive */
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if (strcasematch (name, passwd_buf[i].pw_name))
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return passwd_buf + i;
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return NULL;
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}
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extern "C" struct passwd *
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getpwuid32 (__uid32_t uid)
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{
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struct passwd *temppw = internal_getpwuid (uid, true);
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pthread_testcancel ();
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return temppw;
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}
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extern "C" struct passwd *
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getpwuid (__uid16_t uid)
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{
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return getpwuid32 (uid16touid32 (uid));
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}
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extern "C" int
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getpwuid_r32 (__uid32_t uid, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result)
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{
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*result = NULL;
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if (!pwd || !buffer)
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return ERANGE;
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struct passwd *temppw = internal_getpwuid (uid, true);
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pthread_testcancel ();
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if (!temppw)
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return 0;
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/* check needed buffer size. */
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size_t needsize = strlen (temppw->pw_name) + strlen (temppw->pw_dir) +
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strlen (temppw->pw_shell) + strlen (temppw->pw_gecos) +
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strlen (temppw->pw_passwd) + 5;
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if (needsize > bufsize)
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return ERANGE;
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/* make a copy of temppw */
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*result = pwd;
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pwd->pw_uid = temppw->pw_uid;
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pwd->pw_gid = temppw->pw_gid;
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pwd->pw_name = buffer;
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pwd->pw_dir = pwd->pw_name + strlen (temppw->pw_name) + 1;
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pwd->pw_shell = pwd->pw_dir + strlen (temppw->pw_dir) + 1;
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pwd->pw_gecos = pwd->pw_shell + strlen (temppw->pw_shell) + 1;
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pwd->pw_comment = NULL;
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pwd->pw_passwd = pwd->pw_gecos + strlen (temppw->pw_gecos) + 1;
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strcpy (pwd->pw_name, temppw->pw_name);
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strcpy (pwd->pw_dir, temppw->pw_dir);
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strcpy (pwd->pw_shell, temppw->pw_shell);
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strcpy (pwd->pw_gecos, temppw->pw_gecos);
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strcpy (pwd->pw_passwd, temppw->pw_passwd);
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return 0;
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}
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extern "C" int
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getpwuid_r (__uid16_t uid, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result)
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{
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return getpwuid_r32 (uid16touid32 (uid), pwd, buffer, bufsize, result);
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}
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extern "C" struct passwd *
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getpwnam (const char *name)
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{
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struct passwd *temppw = internal_getpwnam (name, true);
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pthread_testcancel ();
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return temppw;
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}
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/* the max size buffer we can expect to
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* use is returned via sysconf with _SC_GETPW_R_SIZE_MAX.
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* This may need updating! - Rob Collins April 2001.
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*/
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extern "C" int
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getpwnam_r (const char *nam, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result)
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{
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*result = NULL;
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if (!pwd || !buffer || !nam)
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return ERANGE;
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struct passwd *temppw = internal_getpwnam (nam, true);
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pthread_testcancel ();
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if (!temppw)
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return 0;
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/* check needed buffer size. */
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size_t needsize = strlen (temppw->pw_name) + strlen (temppw->pw_dir) +
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strlen (temppw->pw_shell) + strlen (temppw->pw_gecos) +
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strlen (temppw->pw_passwd) + 5;
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if (needsize > bufsize)
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return ERANGE;
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/* make a copy of temppw */
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*result = pwd;
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pwd->pw_uid = temppw->pw_uid;
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pwd->pw_gid = temppw->pw_gid;
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pwd->pw_name = buffer;
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pwd->pw_dir = pwd->pw_name + strlen (temppw->pw_name) + 1;
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pwd->pw_shell = pwd->pw_dir + strlen (temppw->pw_dir) + 1;
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pwd->pw_gecos = pwd->pw_shell + strlen (temppw->pw_shell) + 1;
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pwd->pw_comment = NULL;
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pwd->pw_passwd = pwd->pw_gecos + strlen (temppw->pw_gecos) + 1;
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strcpy (pwd->pw_name, temppw->pw_name);
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strcpy (pwd->pw_dir, temppw->pw_dir);
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strcpy (pwd->pw_shell, temppw->pw_shell);
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strcpy (pwd->pw_gecos, temppw->pw_gecos);
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strcpy (pwd->pw_passwd, temppw->pw_passwd);
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return 0;
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}
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extern "C" struct passwd *
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getpwent (void)
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{
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if (pw_pos == 0)
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pr.refresh (true);
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if (pw_pos < pr.curr_lines)
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return passwd_buf + pw_pos++;
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return NULL;
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}
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extern "C" struct passwd *
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getpwduid (__uid16_t)
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{
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return NULL;
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}
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extern "C" void
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setpwent (void)
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{
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pw_pos = 0;
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}
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extern "C" void
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endpwent (void)
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{
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pw_pos = 0;
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}
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extern "C" int
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setpassent ()
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{
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return 0;
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}
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extern "C" char *
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getpass (const char * prompt)
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{
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char *pass=_reent_winsup ()->_pass;
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struct termios ti, newti;
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cygheap_fdget fhstdin (0);
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if (fhstdin < 0)
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pass[0] = '\0';
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else
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{
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fhstdin->tcgetattr (&ti);
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newti = ti;
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newti.c_lflag &= ~ECHO;
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fhstdin->tcsetattr (TCSANOW, &newti);
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fputs (prompt, stderr);
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fgets (pass, _PASSWORD_LEN, stdin);
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fprintf (stderr, "\n");
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for (int i=0; pass[i]; i++)
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if (pass[i] == '\r' || pass[i] == '\n')
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pass[i] = '\0';
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fhstdin->tcsetattr (TCSANOW, &ti);
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}
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return pass;
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}
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