/*
- * Copyright (c) 1996, 1998-2001 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
+ * Copyright (c) 1996, 1998-2005 Todd C. Miller <Todd.Miller@courtesan.com>
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * 4. Products derived from this software may not be called "Sudo" nor
- * may "Sudo" appear in their names without specific prior written
- * permission from the author.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
-#include "config.h"
+#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "sudo.h"
#ifndef lint
-static const char rcsid[] = "$Sudo: getspwuid.c,v 1.62 2002/01/15 23:43:59 millert Exp $";
+__unused static const char rcsid[] = "$Sudo: getspwuid.c,v 1.65.2.2 2007/06/12 01:28:41 millert Exp $";
#endif /* lint */
/*
#endif /* HAVE_GETPRPWNAM && __alpha */
-/*
- * Local functions not visible outside getspwuid.c
- */
-static struct passwd *sudo_pwdup __P((struct passwd *));
-
-
/*
* Return a copy of the encrypted password for the user described by pw.
* If shadow passwords are in use, look in the shadow file.
*/
char *
sudo_getepw(pw)
- struct passwd *pw;
+ const struct passwd *pw;
{
char *epw;
* Dynamically allocate space for a struct password and the constituent parts
* that we care about. Fills in pw_passwd from shadow file if necessary.
*/
-static struct passwd *
+struct passwd *
sudo_pwdup(pw)
- struct passwd *pw;
+ const struct passwd *pw;
{
- struct passwd *local_pw;
+ char *cp;
+ const char *pw_passwd, *pw_shell;
+ size_t nsize, psize, csize, gsize, dsize, ssize, total;
+ struct passwd *newpw;
- /* Allocate space for a local copy of pw. */
- local_pw = (struct passwd *) emalloc(sizeof(struct passwd));
+ /* Get shadow password if available. */
+ pw_passwd = sudo_getepw(pw);
+
+ /* If shell field is empty, expand to _PATH_BSHELL. */
+ pw_shell = (pw->pw_shell == NULL || pw->pw_shell[0] == '\0')
+ ? _PATH_BSHELL : pw->pw_shell;
+
+ /* Allocate in one big chunk for easy freeing. */
+ nsize = psize = csize = gsize = dsize = ssize = 0;
+ total = sizeof(struct passwd);
+ if (pw->pw_name) {
+ nsize = strlen(pw->pw_name) + 1;
+ total += nsize;
+ }
+ if (pw_passwd) {
+ psize = strlen(pw_passwd) + 1;
+ total += psize;
+ }
+#ifdef HAVE_LOGIN_CAP_H
+ if (pw->pw_class) {
+ csize = strlen(pw->pw_class) + 1;
+ total += csize;
+ }
+#endif
+ if (pw->pw_gecos) {
+ gsize = strlen(pw->pw_gecos) + 1;
+ total += gsize;
+ }
+ if (pw->pw_dir) {
+ dsize = strlen(pw->pw_dir) + 1;
+ total += dsize;
+ }
+ if (pw_shell) {
+ ssize = strlen(pw_shell) + 1;
+ total += ssize;
+ }
+ if ((cp = malloc(total)) == NULL)
+ return (NULL);
+ newpw = (struct passwd *)cp;
/*
- * Copy the struct passwd and the interesting strings...
+ * Copy in passwd contents and make strings relative to space
+ * at the end of the buffer.
*/
- (void) memcpy(local_pw, pw, sizeof(struct passwd));
- local_pw->pw_name = estrdup(pw->pw_name);
- local_pw->pw_dir = estrdup(pw->pw_dir);
- local_pw->pw_gecos = estrdup(pw->pw_gecos);
+ (void)memcpy(newpw, pw, sizeof(struct passwd));
+ cp += sizeof(struct passwd);
+ if (nsize) {
+ (void)memcpy(cp, pw->pw_name, nsize);
+ newpw->pw_name = cp;
+ cp += nsize;
+ }
+ if (psize) {
+ (void)memcpy(cp, pw_passwd, psize);
+ newpw->pw_passwd = cp;
+ cp += psize;
+ }
#ifdef HAVE_LOGIN_CAP_H
- local_pw->pw_class = estrdup(pw->pw_class);
+ if (csize) {
+ (void)memcpy(cp, pw->pw_class, csize);
+ newpw->pw_class = cp;
+ cp += csize;
+ }
#endif
+ if (gsize) {
+ (void)memcpy(cp, pw->pw_gecos, gsize);
+ newpw->pw_gecos = cp;
+ cp += gsize;
+ }
+ if (dsize) {
+ (void)memcpy(cp, pw->pw_dir, dsize);
+ newpw->pw_dir = cp;
+ cp += dsize;
+ }
+ if (ssize) {
+ (void)memcpy(cp, pw_shell, ssize);
+ newpw->pw_shell = cp;
+ cp += ssize;
+ }
- /* If shell field is empty, expand to _PATH_BSHELL. */
- if (local_pw->pw_shell[0] == '\0')
- local_pw->pw_shell = _PATH_BSHELL;
- else
- local_pw->pw_shell = estrdup(pw->pw_shell);
-
- /* pw_passwd gets a shadow password if applicable */
- local_pw->pw_passwd = sudo_getepw(pw);
-
- return(local_pw);
+ return (newpw);
}
/*
projects / debian / sudo / blobdiff