diff options
Diffstat (limited to 'winsup/cygwin/passwd.cc')
| -rw-r--r-- | winsup/cygwin/passwd.cc | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/winsup/cygwin/passwd.cc b/winsup/cygwin/passwd.cc deleted file mode 100644 index a4ceda503..000000000 --- a/winsup/cygwin/passwd.cc +++ /dev/null @@ -1,288 +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 "thread.h" -#include "sync.h" -#include "sigproc.h" -#include "pinfo.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, - 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 () -{ - extern int passwd_sem; - char linebuf[1024]; - ++passwd_sem; - FILE *f = fopen ("/etc/passwd", "rt"); - --passwd_sem; - - 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"); - char user_name [ MAX_USER_NAME ]; - DWORD user_name_len = MAX_USER_NAME; - if (! GetUserNameA (user_name, &user_name_len)) - { - strncpy (user_name, "Administrator", MAX_USER_NAME); - debug_printf ("Failed to get current user name. %E"); - } - snprintf (linebuf, sizeof (linebuf), "%s::%u:%u::%s:/bin/sh", user_name, - DEFAULT_UID, DEFAULT_GID, getenv ("HOME") ?: "/"); - add_pwd_line (linebuf); - passwd_state = emulated; - } -} - -/* Cygwin internal */ -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, myself->username))) - return default_pw; - - return NULL; -} - -extern "C" struct passwd * -getpwuid (uid_t uid) -{ - if (passwd_state == uninitialized) - read_etc_passwd(); - - return search_for (uid, 0); -} - -extern "C" struct passwd * -getpwnam (const char *name) -{ - if (passwd_state == uninitialized) - read_etc_passwd(); - - return search_for (0, name); -} - -extern "C" struct passwd * -getpwent (void) -{ - if (passwd_state == uninitialized) - 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 == uninitialized) - read_etc_passwd(); - - return NULL; -} - -extern "C" void -setpwent (void) -{ - if (passwd_state == uninitialized) - read_etc_passwd(); - - pw_pos = 0; -} - -extern "C" void -endpwent (void) -{ - if (passwd_state == uninitialized) - read_etc_passwd(); - - pw_pos = 0; -} - -extern "C" int -setpassent () -{ - if (passwd_state == uninitialized) - 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 == uninitialized) - read_etc_passwd(); - - if (fdtab.not_open (0)) - { - set_errno (EBADF); - pass[0] = '\0'; - } - else - { - fhandler_base *fhstdin = 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; -} |