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Fix 'Suhosin fails to correctly override post handles when Apache SAPI is used'

Also, while I'm here, clean up unused code and old comments
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@NewEraCracker
NewEraCracker committed Oct 28, 2016
1 parent 9487bed commit b4bbc17
Showing 1 changed file with 49 additions and 31 deletions.
80 changes: 49 additions & 31 deletions suhosin.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,18 +47,19 @@ static zend_llist_position lp = NULL;
static int (*old_startup)(zend_extension *extension) = NULL;
static zend_extension *ze = NULL;

static int suhosin_module_startup(zend_extension *extension);
static void suhosin_shutdown(zend_extension *extension);


static void (*orig_module_activate)(void) = NULL;
static void (*orig_module_deactivate)(void) = NULL;
static void (*orig_op_array_ctor)(zend_op_array *op_array) = NULL;
static void (*orig_op_array_dtor)(zend_op_array *op_array) = NULL;
static void (*orig_module_shutdown)(zend_extension *extension) = NULL;
static int (*orig_module_startup)(zend_extension *extension) = NULL;


static void suhosin_module_activate(void);
static void suhosin_module_deactivate(void);
static void suhosin_op_array_ctor(zend_op_array *op_array);
static void suhosin_op_array_dtor(zend_op_array *op_array);
static void suhosin_shutdown(zend_extension *extension);
static int suhosin_module_startup(zend_extension *extension);

STATIC zend_extension suhosin_zend_extension_entry = {
"Suhosin",
Expand All @@ -68,8 +69,8 @@ STATIC zend_extension suhosin_zend_extension_entry = {
"Copyright (c) 2007-2015",
suhosin_module_startup,
suhosin_shutdown,
NULL,
NULL,
suhosin_module_activate,
suhosin_module_deactivate,
NULL,
NULL,
NULL,
Expand All @@ -81,6 +82,20 @@ STATIC zend_extension suhosin_zend_extension_entry = {
STANDARD_ZEND_EXTENSION_PROPERTIES
};

static void suhosin_module_activate(void)
{
TSRMLS_FETCH();

suhosin_hook_post_handlers(TSRMLS_C);
}

static void suhosin_module_deactivate(void)
{
TSRMLS_FETCH();

suhosin_unhook_post_handlers(TSRMLS_C);
}

static void suhosin_op_array_ctor(zend_op_array *op_array)
{
TSRMLS_FETCH();
Expand Down Expand Up @@ -109,6 +124,22 @@ static void suhosin_op_array_dtor(zend_op_array *op_array)

/* Stealth Mode functions */

static void stealth_module_activate(void)
{
if (orig_module_activate != NULL) {
orig_module_activate();
}
suhosin_module_activate();
}

static void stealth_module_deactivate(void)
{
if (orig_module_deactivate != NULL) {
orig_module_deactivate();
}
suhosin_module_deactivate();
}

static void stealth_op_array_ctor(zend_op_array *op_array)
{
if (orig_op_array_ctor != NULL) {
Expand Down Expand Up @@ -147,8 +178,6 @@ static int suhosin_module_startup(zend_extension *extension)
int resid;
TSRMLS_FETCH();

/* zend_register_module(&suhosin_module_entry TSRMLS_CC); */

if (zend_hash_find(&module_registry, "suhosin", sizeof("suhosin"), (void **)&module_entry_ptr)==SUCCESS) {

if (extension) {
Expand All @@ -157,10 +186,7 @@ static int suhosin_module_startup(zend_extension *extension)
zend_extension ext;
ext = suhosin_zend_extension_entry;
ext.handle = module_entry_ptr->handle;
/*
zend_llist_add_element(&zend_extensions, &ext);
extension = zend_llist_get_last(&zend_extensions);
*/

extension = &suhosin_zend_extension_entry;
}
module_entry_ptr->handle = NULL;
Expand All @@ -178,7 +204,6 @@ static int suhosin_module_startup(zend_extension *extension)
suhosin_zend_extension_entry.resource_number = resid;

suhosin_hook_treat_data();
suhosin_hook_post_handlers(TSRMLS_C);
suhosin_aes_gentables();
suhosin_hook_register_server_variables();
suhosin_hook_header_handler();
Expand All @@ -192,16 +217,15 @@ static int suhosin_module_startup(zend_extension *extension)

static void suhosin_shutdown(zend_extension *extension)
{
TSRMLS_FETCH();

suhosin_unhook_execute();
suhosin_unhook_header_handler();
suhosin_unhook_post_handlers(TSRMLS_C);
/* suhosin_unhook_session(); - enabling this causes compability problems */

if (ze != NULL) {
ze->startup = orig_module_startup;
ze->shutdown = orig_module_shutdown;
ze->activate = orig_module_activate;
ze->deactivate = orig_module_deactivate;
ze->op_array_ctor = orig_op_array_ctor;
ze->op_array_dtor = orig_op_array_dtor;
}
Expand All @@ -214,7 +238,6 @@ static int suhosin_startup_wrapper(zend_extension *ext)
zend_extension *ex = &suhosin_zend_extension_entry;
char *new_info;
int new_info_length;
TSRMLS_FETCH();

/* Ugly but working hack */
new_info_length = sizeof("%s\n with %s v%s, %s, by %s\n")
Expand All @@ -233,27 +256,22 @@ static int suhosin_startup_wrapper(zend_extension *ext)
/* Stealth Mode */
orig_module_startup = ze->startup;
orig_module_shutdown = ze->shutdown;
orig_module_activate = ze->activate;
orig_module_deactivate = ze->deactivate;
orig_op_array_ctor = ze->op_array_ctor;
orig_op_array_dtor = ze->op_array_dtor;

/*if (SUHOSIN_G(stealth) != 0) {*/
ze->startup = stealth_module_startup;
ze->shutdown = stealth_module_shutdown;
ze->op_array_ctor = stealth_op_array_ctor;
ze->op_array_dtor = stealth_op_array_dtor;
/*}*/
ze->startup = stealth_module_startup;
ze->shutdown = stealth_module_shutdown;
ze->activate = stealth_module_activate;
ze->deactivate = stealth_module_deactivate;
ze->op_array_ctor = stealth_op_array_ctor;
ze->op_array_dtor = stealth_op_array_dtor;

if (old_startup != NULL) {
res = old_startup(ext);
}

/* ex->name = NULL;
ex->author = NULL;
ex->copyright = NULL;
ex->version = NULL;*/

/*zend_extensions.head=NULL;*/

suhosin_module_startup(NULL);

return res;
Expand Down

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