The PHP7 variant of the macro wasn't safe if the hash key was not a
string type. This was found when running php script with just
libvirt_connect call under xdebug session which segfaulted. This patch
makes the following changes:
* make sure that tmp_name is initialized to NULL
* set the key name only when zend_hash_get_current_key_ex did set it to
something which happens only when type is HASH_KEY_IS_STRING
* stash the key index in out php_libvirt_hash_key_info struct because it
wasn't there before and separate variable had to be used.
---
src/libvirt-connection.c | 8 +++-----
src/libvirt-php.c | 6 ++----
src/libvirt-php.h | 1 +
src/util.h | 16 +++++++++-------
4 files changed, 15 insertions(+), 16 deletions(-)
diff --git a/src/libvirt-connection.c b/src/libvirt-connection.c
index 181b266..2d59d82 100644
--- a/src/libvirt-connection.c
+++ b/src/libvirt-connection.c
@@ -131,8 +131,6 @@ PHP_FUNCTION(libvirt_connect)
HashPosition pointer;
int array_count;
- zend_ulong index;
-
unsigned long libVer;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|sba", &url, &url_len, &readonly, &zcreds) == FAILURE) {
@@ -176,13 +174,13 @@ PHP_FUNCTION(libvirt_connect)
VIRT_FOREACH(arr_hash, pointer, data) {
if (Z_TYPE_P(data) == IS_STRING) {
php_libvirt_hash_key_info info;
- VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, index, info);
+ VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, info);
if (info.type == HASH_KEY_IS_STRING) {
PHPWRITE(info.name, info.length);
} else {
- DPRINTF("%s: credentials index %d\n", PHPFUNC, (int)index);
- creds[j].type = index;
+ DPRINTF("%s: credentials index %d\n", PHPFUNC, info.index);
+ creds[j].type = info.index;
creds[j].result = (char *)emalloc(Z_STRLEN_P(data) + 1);
memset(creds[j].result, 0, Z_STRLEN_P(data) + 1);
creds[j].resultlen = Z_STRLEN_P(data);
diff --git a/src/libvirt-php.c b/src/libvirt-php.c
index ef057fe..efbef58 100644
--- a/src/libvirt-php.c
+++ b/src/libvirt-php.c
@@ -1921,7 +1921,6 @@ long get_next_free_numeric_value(virDomainPtr domain, char *xpath)
HashPosition pointer;
// int array_count;
zval *data;
- unsigned long index;
long max_slot = -1;
xml = virDomainGetXMLDesc(domain, VIR_DOMAIN_XML_INACTIVE);
@@ -1934,7 +1933,7 @@ long get_next_free_numeric_value(virDomainPtr domain, char *xpath)
VIRT_FOREACH(arr_hash, pointer, data) {
if (Z_TYPE_P(data) == IS_STRING) {
php_libvirt_hash_key_info info;
- VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, index, info);
+ VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, info);
if (info.type != HASH_KEY_IS_STRING) {
long num = -1;
@@ -2439,7 +2438,6 @@ void parse_array(zval *arr, tVMDisk *disk, tVMNetwork *network)
zval *data;
php_libvirt_hash_key_info key;
HashPosition pointer;
- unsigned long index;
arr_hash = Z_ARRVAL_P(arr);
//array_count = zend_hash_num_elements(arr_hash);
@@ -2451,7 +2449,7 @@ void parse_array(zval *arr, tVMDisk *disk, tVMNetwork *network)
VIRT_FOREACH(arr_hash, pointer, data) {
if ((Z_TYPE_P(data) == IS_STRING) || (Z_TYPE_P(data) == IS_LONG)) {
- VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, index, key);
+ VIRT_HASH_CURRENT_KEY_INFO(arr_hash, pointer, key);
if (key.type == HASH_KEY_IS_STRING) {
if (disk != NULL) {
if ((Z_TYPE_P(data) == IS_STRING) && strcmp(key.name, "path") == 0)
diff --git a/src/libvirt-php.h b/src/libvirt-php.h
index 8d13a6b..f24a329 100644
--- a/src/libvirt-php.h
+++ b/src/libvirt-php.h
@@ -137,6 +137,7 @@ typedef struct tVMNetwork {
typedef struct _php_libvirt_hash_key_info {
char *name;
unsigned int length;
+ unsigned int index;
unsigned int type;
} php_libvirt_hash_key_info;
diff --git a/src/util.h b/src/util.h
index ecb3a1f..72cfa91 100644
--- a/src/util.h
+++ b/src/util.h
@@ -135,12 +135,14 @@
# define VIRT_FOREACH_END(_dummy)
-# define VIRT_HASH_CURRENT_KEY_INFO(_ht, _pos, _idx, _info) \
+# define VIRT_HASH_CURRENT_KEY_INFO(_ht, _pos, _info) \
do { \
- zend_string *tmp_key_info; \
- _info.type = zend_hash_get_current_key_ex(_ht, &tmp_key_info, &_idx, &_pos); \
- _info.name = ZSTR_VAL(tmp_key_info); \
- _info.length = ZSTR_LEN(tmp_key_info); \
+ zend_string *tmp_name = NULL; \
+ _info.type = zend_hash_get_current_key_ex(_ht, &tmp_name, (zend_ulong *) &_info.index, &_pos); \
+ if (tmp_name) { \
+ _info.name = ZSTR_VAL(tmp_name); \
+ _info.length = ZSTR_LEN(tmp_name); \
+ } \
} while(0)
# define VIRT_ARRAY_INIT(_name) do { \
@@ -213,9 +215,9 @@
# define VIRT_FOREACH_END(_dummy) \
}}
-# define VIRT_HASH_CURRENT_KEY_INFO(_ht, _pos, _idx, _info) \
+# define VIRT_HASH_CURRENT_KEY_INFO(_ht, _pos, _info) \
do { \
- _info.type = zend_hash_get_current_key_ex(_ht, &_info.name, &_info.length, &_idx, 0, &_pos); \
+ _info.type = zend_hash_get_current_key_ex(_ht, &_info.name, &_info.length, &_info.index, 0, &_pos); \
} while(0)
# define VIRT_ARRAY_INIT(_name) do {\
--
2.14.3
--
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