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Fixed bug #39648 (Implementation of PHP functions chown() and chgrp() are

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not thread safe).
This commit is contained in:
Ilia Alshanetsky 2006-11-29 23:34:49 +00:00
parent 4cc29fef5c
commit 466d9ba00a
3 changed files with 40 additions and 8 deletions
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2
NEWS
View File

@ -55,6 +55,8 @@ PHP NEWS
after closeCursor()). (Ilia, Tony)
- Fixed bug #39653 (ext/dba doesn't check for db-4.5 and db-4.4 when db4
support is enabled). (Tony)
- Fixed bug #39648 (Implementation of PHP functions chown() and chgrp() are not
thread safe). (Ilia, wharmby at uk dot ibm dot com)
- Fixed bug #39623 (thread safety fixes on *nix for putenv() & mime_magic).
(Ilia, wharmby at uk dot ibm dot com)
- Fixed bug #39621 (str_replace() is not binary safe on strings with equal

2
configure.in
View File

@ -480,6 +480,8 @@ getservbyport \
getrusage \
gettimeofday \
gmtime_r \
getpwnam_r \
getgrnam_r \
grantpt \
inet_ntoa \
inet_ntop \

44
ext/standard/filestat.c
View File

@ -356,7 +356,6 @@ static void php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS, int do_lchgrp)
{
zval **filename, **group;
gid_t gid;
struct group *gr=NULL;
int ret;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &filename, &group)==FAILURE) {
@ -364,13 +363,28 @@ static void php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS, int do_lchgrp)
}
convert_to_string_ex(filename);
if (Z_TYPE_PP(group) == IS_STRING) {
gr = getgrnam(Z_STRVAL_PP(group));
#if HAVE_GETGRNAM_R
struct group gr;
struct group *retgrptr;
int grbuflen = sysconf(_SC_GETGR_R_SIZE_MAX);
char *grbuf = emalloc(grbuflen);
if (getgrnam_r(Z_STRVAL_PP(group), &gr, grbuf, grbuflen, &retgrptr) != 0 || retgrptr == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find gid for %s", Z_STRVAL_PP(group));
efree(grbuf);
RETURN_FALSE;
}
efree(grbuf);
gid = gr.gr_gid;
#else
struct group *gr = getgrnam(Z_STRVAL_PP(group));
if (!gr) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find gid for %s",
Z_STRVAL_PP(group));
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find gid for %s", Z_STRVAL_PP(group));
RETURN_FALSE;
}
gid = gr->gr_gid;
#endif
} else {
convert_to_long_ex(group);
gid = Z_LVAL_PP(group);
@ -434,20 +448,34 @@ static void php_do_chown(INTERNAL_FUNCTION_PARAMETERS, int do_lchown)
zval **filename, **user;
int ret;
uid_t uid;
struct passwd *pw = NULL;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &filename, &user)==FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(filename);
if (Z_TYPE_PP(user) == IS_STRING) {
pw = getpwnam(Z_STRVAL_PP(user));
#ifdef HAVE_GETPWNAM_R
struct passwd pw;
struct passwd *retpwptr = NULL;
int pwbuflen = sysconf(_SC_GETPW_R_SIZE_MAX);
char *pwbuf = emalloc(pwbuflen);
if (getpwnam_r(Z_STRVAL_PP(user), &pw, pwbuf, pwbuflen, &retpwptr) != 0 || retpwptr == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find uid for %s", Z_STRVAL_PP(user));
efree(pwbuf);
RETURN_FALSE;
}
efree(pwbuf);
uid = pw.pw_uid;
#else
struct passwd *pw = getpwnam(Z_STRVAL_PP(user));
if (!pw) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find uid for %s",
Z_STRVAL_PP(user));
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find uid for %s", Z_STRVAL_PP(user));
RETURN_FALSE;
}
uid = pw->pw_uid;
#endif
} else {
convert_to_long_ex(user);
uid = Z_LVAL_PP(user);