Fix bug #62266

Custom extension segfaults during xmlParseFile with FPM SAPI
because the regular list is not prepared during the MINIT phase
and our custom external entity loader tries to open PHP streams.

2 files changed, 17 insertions, 4 deletions

diff --git a/NEWS b/NEWS
index 17d1c580f7..b91b5d78a9 100644
--- a/NEWS
+++ b/NEWS
@@ -14,7 +14,7 @@ PHP                                                                        NEWS
   . Fixed information leak in ext exif (discovered by Martin Noga, 
     Matthew "j00ru" Jurczyk, Gynvael Coldwind)
 
-- FPM
+- FPM:
   . Fixed bug #62205 (php-fpm segfaults (null passed to strstr)). (fat)
   . Fixed bug #62160 (Add process.priority to set nice(2) priorities). (fat)
   . Fixed bug #62153 (when using unix sockets, multiples FPM instances
@@ -33,7 +33,7 @@ PHP                                                                        NEWS
 - Iconv:
   . Fix bug #55042 (Erealloc in iconv.c unsafe). (Stas)
 
-- Intl
+- Intl:
   . Fixed bug #62083 (grapheme_extract() memory leaks). (Gustavo)
   . ResourceBundle constructor now accepts NULL for the first two arguments.
     (Gustavo)
@@ -43,6 +43,10 @@ PHP                                                                        NEWS
   . Fixed bug #62017 (datefmt_create with incorrectly encoded timezone leaks
     pattern). (Gustavo)
 
+- libxml:
+  . Fixed bug #62266 (Custom extension segfaults during xmlParseFile with FPM
+    SAPI). (Gustavo)
+
 - Readline:
   . Fixed bug #62186 (readline fails to compile - void function should not
     return a value). (Johannes)
diff --git a/ext/libxml/libxml.c b/ext/libxml/libxml.c
index e42d845f90..a39c875b2c 100644
--- a/ext/libxml/libxml.c
+++ b/ext/libxml/libxml.c
@@ -677,9 +677,18 @@ is_string:
 static xmlParserInputPtr _php_libxml_pre_ext_ent_loader(const char *URL,
 		const char *ID, xmlParserCtxtPtr context)
 {
+	TSRMLS_FETCH();
+
 	/* Check whether we're running in a PHP context, since the entity loader
-	 * we've defined is an application level (true global) setting */
-	if (xmlGenericError == php_libxml_error_handler) {
+	 * we've defined is an application level (true global) setting.
+	 * If we are, we also want to check whether we've finished activating
+	 * the modules (RINIT phase). Using our external entity loader during a
+	 * RINIT should not be problem per se (though during MINIT it is, because
+	 * we don't even have a resource list by then), but then whether one
+	 * extension would be using the custom external entity loader or not
+	 * could depend on extension loading order
+	 * (if _php_libxml_per_request_initialization */
+	if (xmlGenericError == php_libxml_error_handler && PG(modules_activated)) {
 		return _php_libxml_external_entity_loader(URL, ID, context);
 	} else {
 		return _php_libxml_default_entity_loader(URL, ID, context);