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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_strings.h"
#include "apr_portable.h"
#include "apr_user.h"
#include "apr_private.h"
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h> /* for _POSIX_THREAD_SAFE_FUNCTIONS */
#endif
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#define PWBUF_SIZE 2048
static apr_status_t getpwnam_safe(const char *username,
struct passwd *pw,
char pwbuf[PWBUF_SIZE])
{
struct passwd *pwptr;
#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
apr_status_t rv;
/* POSIX defines getpwnam_r() et al to return the error number
* rather than set errno, and requires pwptr to be set to NULL if
* the entry is not found, imply that "not found" is not an error
* condition; some implementations do return 0 with pwptr set to
* NULL. */
rv = getpwnam_r(username, pw, pwbuf, PWBUF_SIZE, &pwptr);
if (rv) {
return rv;
}
if (pwptr == NULL) {
return APR_ENOENT;
}
#else
/* Some platforms (e.g. FreeBSD 4.x) do not set errno on NULL "not
* found" return values for the non-threadsafe function either. */
errno = 0;
if ((pwptr = getpwnam(username)) != NULL) {
memcpy(pw, pwptr, sizeof *pw);
}
else {
return errno ? errno : APR_ENOENT;
}
#endif
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_uid_homepath_get(char **dirname,
const char *username,
apr_pool_t *p)
{
struct passwd pw;
char pwbuf[PWBUF_SIZE];
apr_status_t rv;
if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS)
return rv;
#ifdef OS2
/* Need to manually add user name for OS/2 */
*dirname = apr_pstrcat(p, pw.pw_dir, pw.pw_name, NULL);
#else
*dirname = apr_pstrdup(p, pw.pw_dir);
#endif
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_uid_current(apr_uid_t *uid,
apr_gid_t *gid,
apr_pool_t *p)
{
*uid = getuid();
*gid = getgid();
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_uid_get(apr_uid_t *uid, apr_gid_t *gid,
const char *username, apr_pool_t *p)
{
struct passwd pw;
char pwbuf[PWBUF_SIZE];
apr_status_t rv;
if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS)
return rv;
*uid = pw.pw_uid;
*gid = pw.pw_gid;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_uid_name_get(char **username, apr_uid_t userid,
apr_pool_t *p)
{
struct passwd *pw;
#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
struct passwd pwd;
char pwbuf[PWBUF_SIZE];
apr_status_t rv;
rv = getpwuid_r(userid, &pwd, pwbuf, sizeof(pwbuf), &pw);
if (rv) {
return rv;
}
if (pw == NULL) {
return APR_ENOENT;
}
#else
errno = 0;
if ((pw = getpwuid(userid)) == NULL) {
return errno ? errno : APR_ENOENT;
}
#endif
*username = apr_pstrdup(p, pw->pw_name);
return APR_SUCCESS;
}
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