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Diffstat (limited to 'winsup/cygwin/passwd.cc')
-rw-r--r--winsup/cygwin/passwd.cc384
1 files changed, 0 insertions, 384 deletions
diff --git a/winsup/cygwin/passwd.cc b/winsup/cygwin/passwd.cc
deleted file mode 100644
index 319ebbbcd..000000000
--- a/winsup/cygwin/passwd.cc
+++ /dev/null
@@ -1,384 +0,0 @@
-/* passwd.cc: getpwnam () and friends
-
- Copyright 1996, 1997, 1998 Cygnus Solutions.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license. Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#include "winsup.h"
-#include <stdlib.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <errno.h>
-#include "cygerrno.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "sync.h"
-#include "sigproc.h"
-#include "pinfo.h"
-#include "cygheap.h"
-#include <sys/termios.h>
-
-/* Read /etc/passwd only once for better performance. This is done
- on the first call that needs information from it. */
-
-static struct passwd *passwd_buf = NULL; /* passwd contents in memory */
-static int curr_lines = 0;
-static int max_lines = 0;
-
-/* Set to loaded when /etc/passwd has been read in by read_etc_passwd ().
- Set to emulated if passwd is emulated. */
-/* Functions in this file need to check the value of passwd_state
- and read in the password file if it isn't set. */
-enum pwd_state {
- uninitialized = 0,
- initializing,
- emulated,
- loaded
-};
-static pwd_state passwd_state = uninitialized;
-
-/* Position in the passwd cache */
-#ifdef _MT_SAFE
-#define pw_pos _reent_winsup ()->_pw_pos
-#else
-static int pw_pos = 0;
-#endif
-
-/* Remove a : teminated string from the buffer, and increment the pointer */
-static char *
-grab_string (char **p)
-{
- char *src = *p;
- char *res = src;
-
- while (*src && *src != ':' && *src != '\n')
- src++;
-
- if (*src == ':')
- {
- *src = 0;
- src++;
- }
- *p = src;
- return res;
-}
-
-/* same, for ints */
-static int
-grab_int (char **p)
-{
- char *src = *p;
- int val = strtol (src, NULL, 10);
- while (*src && *src != ':' && *src != '\n')
- src++;
- if (*src == ':')
- src++;
- *p = src;
- return val;
-}
-
-/* Parse /etc/passwd line into passwd structure. */
-void
-parse_pwd (struct passwd &res, char *buf)
-{
- /* Allocate enough room for the passwd struct and all the strings
- in it in one go */
- size_t len = strlen (buf);
- char *mybuf = (char *) malloc (len + 1);
- (void) memcpy (mybuf, buf, len + 1);
- if (mybuf[--len] == '\n')
- mybuf[len] = '\0';
-
- res.pw_name = strlwr (grab_string (&mybuf));
- res.pw_passwd = grab_string (&mybuf);
- res.pw_uid = grab_int (&mybuf);
- res.pw_gid = grab_int (&mybuf);
- res.pw_comment = 0;
- res.pw_gecos = grab_string (&mybuf);
- res.pw_dir = grab_string (&mybuf);
- res.pw_shell = grab_string (&mybuf);
-}
-
-/* Add one line from /etc/passwd into the password cache */
-static void
-add_pwd_line (char *line)
-{
- if (curr_lines >= max_lines)
- {
- max_lines += 10;
- passwd_buf = (struct passwd *) realloc (passwd_buf, max_lines * sizeof (struct passwd));
- }
- parse_pwd (passwd_buf[curr_lines++], line);
-}
-
-/* Read in /etc/passwd and save contents in the password cache.
- This sets passwd_state to loaded or emulated so functions in this file can
- tell that /etc/passwd has been read in or will be emulated. */
-void
-read_etc_passwd ()
-{
- char linebuf[1024];
- /* A mutex is ok for speed here - pthreads will use critical sections not mutex's
- * for non-shared mutexs in the future. Also, this function will at most be called
- * once from each thread, after that the passwd_state test will succeed
- */
- static pthread_mutex_t etc_passwd_mutex = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
- pthread_mutex_lock (&etc_passwd_mutex);
-
- /* if we got blocked by the mutex, then etc_passwd may have been processed */
- if (passwd_state != uninitialized)
- {
- pthread_mutex_unlock(&etc_passwd_mutex);
- return;
- }
-
- if (passwd_state != initializing)
- {
- passwd_state = initializing;
-
- FILE *f = fopen ("/etc/passwd", "rt");
-
- if (f)
- {
- while (fgets (linebuf, sizeof (linebuf), f) != NULL)
- {
- if (strlen (linebuf))
- add_pwd_line (linebuf);
- }
-
- fclose (f);
- passwd_state = loaded;
- }
- else
- {
- debug_printf ("Emulating /etc/passwd");
- snprintf (linebuf, sizeof (linebuf), "%s::%u:%u::%s:/bin/sh", cygheap->user.name (),
- DEFAULT_UID, DEFAULT_GID, getenv ("HOME") ?: "/");
- add_pwd_line (linebuf);
- passwd_state = emulated;
- }
-
- }
-
- pthread_mutex_unlock (&etc_passwd_mutex);
-}
-
-/* Cygwin internal */
-/* If this ever becomes non-reentrant, update all the getpw*_r functions */
-static struct passwd *
-search_for (uid_t uid, const char *name)
-{
- struct passwd *res = 0;
- struct passwd *default_pw = 0;
-
- for (int i = 0; i < curr_lines; i++)
- {
- res = passwd_buf + i;
- if (res->pw_uid == DEFAULT_UID)
- default_pw = res;
- /* on Windows NT user names are case-insensitive */
- if (name)
- {
- if (strcasematch (name, res->pw_name))
- return res;
- }
- else if (uid == res->pw_uid)
- return res;
- }
-
- /* Return default passwd entry if passwd is emulated or it's a
- request for the current user. */
- if (passwd_state != loaded
- || (!name && uid == myself->uid)
- || (name && strcasematch (name, cygheap->user.name ())))
- return default_pw;
-
- return NULL;
-}
-
-extern "C" struct passwd *
-getpwuid (uid_t uid)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pthread_testcancel();
-
- return search_for (uid, 0);
-}
-
-extern "C" int
-getpwuid_r (uid_t uid, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result)
-{
- *result = NULL;
-
- if (!pwd || !buffer)
- return ERANGE;
-
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pthread_testcancel();
-
- struct passwd *temppw = search_for (uid, 0);
-
- if (!temppw)
- return 0;
-
- /* check needed buffer size. */
- size_t needsize = strlen (temppw->pw_name) + strlen (temppw->pw_dir) + strlen (temppw->pw_shell);
- if (needsize > bufsize)
- return ERANGE;
-
- /* make a copy of temppw */
- *result = pwd;
- pwd->pw_uid = temppw->pw_uid;
- pwd->pw_gid = temppw->pw_gid;
- pwd->pw_name = buffer;
- pwd->pw_dir = buffer + strlen (temppw->pw_name);
- pwd->pw_shell = buffer + strlen (temppw->pw_name) + strlen (temppw->pw_dir);
- strcpy (pwd->pw_name, temppw->pw_name);
- strcpy (pwd->pw_dir, temppw->pw_dir);
- strcpy (pwd->pw_shell, temppw->pw_shell);
- return 0;
-}
-
-extern "C" struct passwd *
-getpwnam (const char *name)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pthread_testcancel();
-
- return search_for (0, name);
-}
-
-
-/* the max size buffer we can expect to
- * use is returned via sysconf with _SC_GETPW_R_SIZE_MAX.
- * This may need updating! - Rob Collins April 2001.
- */
-extern "C" int
-getpwnam_r (const char *nam, struct passwd *pwd, char *buffer, size_t bufsize, struct passwd **result)
-{
- *result = NULL;
-
- if (!pwd || !buffer || !nam)
- return ERANGE;
-
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pthread_testcancel();
-
- struct passwd *temppw = search_for (0, nam);
-
- if (!temppw)
- return 0;
-
- /* check needed buffer size. */
- size_t needsize = strlen (temppw->pw_name) + strlen (temppw->pw_dir) + strlen (temppw->pw_shell);
- if (needsize > bufsize)
- return ERANGE;
-
- /* make a copy of temppw */
- *result = pwd;
- pwd->pw_uid = temppw->pw_uid;
- pwd->pw_gid = temppw->pw_gid;
- pwd->pw_name = buffer;
- pwd->pw_dir = buffer + strlen (temppw->pw_name);
- pwd->pw_shell = buffer + strlen (temppw->pw_name) + strlen (temppw->pw_dir);
- strcpy (pwd->pw_name, temppw->pw_name);
- strcpy (pwd->pw_dir, temppw->pw_dir);
- strcpy (pwd->pw_shell, temppw->pw_shell);
- return 0;
-}
-
-extern "C" struct passwd *
-getpwent (void)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- if (pw_pos < curr_lines)
- return passwd_buf + pw_pos++;
-
- return NULL;
-}
-
-extern "C" struct passwd *
-getpwduid (uid_t)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- return NULL;
-}
-
-extern "C" void
-setpwent (void)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pw_pos = 0;
-}
-
-extern "C" void
-endpwent (void)
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- pw_pos = 0;
-}
-
-extern "C" int
-setpassent ()
-{
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- return 0;
-}
-
-extern "C" char *
-getpass (const char * prompt)
-{
-#ifdef _MT_SAFE
- char *pass=_reent_winsup ()->_pass;
-#else
- static char pass[_PASSWORD_LEN];
-#endif
- struct termios ti, newti;
-
- if (passwd_state <= initializing)
- read_etc_passwd ();
-
- if (cygheap->fdtab.not_open (0))
- {
- set_errno (EBADF);
- pass[0] = '\0';
- }
- else
- {
- fhandler_base *fhstdin = cygheap->fdtab[0];
- fhstdin->tcgetattr (&ti);
- newti = ti;
- newti.c_lflag &= ~ECHO;
- fhstdin->tcsetattr (TCSANOW, &newti);
- fputs (prompt, stderr);
- fgets (pass, _PASSWORD_LEN, stdin);
- fprintf (stderr, "\n");
- for (int i=0; pass[i]; i++)
- if (pass[i] == '\r' || pass[i] == '\n')
- pass[i] = '\0';
- fhstdin->tcsetattr (TCSANOW, &ti);
- }
- return pass;
-}
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