Description:
------------
Variable known_post_content_types used in SAPI.c is declared as static which is not thread safe and can lead to crash under multithread webservers like IIS.

Here is a patch for SAPI.h and SAPI.c

--- php-4.3.7RC1.orig/main/SAPI.h	2003-04-09 22:27:55.000000000 +0200
+++ php-4.3.7RC1/main/SAPI.h	2004-05-26 10:08:34.000000000 +0200
@@ -120,6 +120,7 @@
 	long post_max_size;
 	int options;
 	zend_bool sapi_started;
+	HashTable known_post_content_types;
 } sapi_globals_struct;



--- php-4.3.7RC1.orig/main/SAPI.c	2004-03-27 02:45:44.000000000 +0100
+++ php-4.3.7RC1/main/SAPI.c	2004-05-29 14:34:47.000000000 +0200
@@ -48,7 +48,6 @@
 
 #include "php_content_types.h"
 
-static HashTable known_post_content_types;
 
 #ifdef ZTS
 SAPI_API int sapi_globals_id;
@@ -59,6 +58,11 @@
 static void sapi_globals_ctor(sapi_globals_struct *sapi_globals TSRMLS_DC)
 {
 	memset(sapi_globals, 0, sizeof(*sapi_globals));
+	zend_hash_init_ex(&SG(known_post_content_types), 5, NULL, NULL, 1, 0);
+}
+
+static void sapi_globals_dtor(sapi_globals_struct *sapi_globals TSRMLS_DC) {
+	zend_hash_destroy(&SG(known_post_content_types));
 }
 
 /* True globals (no need for thread safety) */
@@ -68,10 +72,9 @@
 SAPI_API void sapi_startup(sapi_module_struct *sf)
 {
 	sapi_module = *sf;
-	zend_hash_init_ex(&known_post_content_types, 5, NULL, NULL, 1, 0);
 
 #ifdef ZTS
-	ts_allocate_id(&sapi_globals_id, sizeof(sapi_globals_struct), (ts_allocate_ctor) sapi_globals_ctor, NULL);
+	ts_allocate_id(&sapi_globals_id, sizeof(sapi_globals_struct), (ts_allocate_ctor) sapi_globals_ctor, (ts_allocate_dtor)sapi_globals_dtor);
 #else
 	sapi_globals_ctor(&sapi_globals TSRMLS_CC);
 #endif
@@ -98,7 +101,6 @@
 	tsrm_win32_shutdown();
 #endif
 
-	zend_hash_destroy(&known_post_content_types);
 }
 
 
@@ -151,7 +153,7 @@
 	}
 
 	/* now try to find an appropriate POST content handler */
-	if (zend_hash_find(&known_post_content_types, content_type, content_type_length+1, (void **) &post_entry)==SUCCESS) {
+	if (zend_hash_find(&SG(known_post_content_types), content_type, content_type_length+1, (void **) &post_entry)==SUCCESS) {
 		/* found one, register it for use */
 		SG(request_info).post_entry = post_entry;
 		post_reader_func = post_entry->post_reader;
@@ -795,12 +797,14 @@
 
 SAPI_API int sapi_register_post_entry(sapi_post_entry *post_entry)
 {
-	return zend_hash_add(&known_post_content_types, post_entry->content_type, post_entry->content_type_len+1, (void *) post_entry, sizeof(sapi_post_entry), NULL);
+	TSRMLS_FETCH();
+	return zend_hash_add(&SG(known_post_content_types), post_entry->content_type, post_entry->content_type_len+1, (void *) post_entry, sizeof(sapi_post_entry), NULL);
 }
 
 SAPI_API void sapi_unregister_post_entry(sapi_post_entry *post_entry)
 {
-	zend_hash_del(&known_post_content_types, post_entry->content_type, post_entry->content_type_len+1);
+	TSRMLS_FETCH();
+	zend_hash_del(&SG(known_post_content_types), post_entry->content_type, post_entry->content_type_len+1);
 }