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LCOV - code coverage report
Current view: top level - ext/libxml - libxml.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 516 584 88.4 %
Date: 2015-08-04 Functions: 51 52 98.1 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :    +----------------------------------------------------------------------+
       3             :    | PHP Version 7                                                        |
       4             :    +----------------------------------------------------------------------+
       5             :    | Copyright (c) 1997-2015 The PHP Group                                |
       6             :    +----------------------------------------------------------------------+
       7             :    | This source file is subject to version 3.01 of the PHP license,      |
       8             :    | that is bundled with this package in the file LICENSE, and is        |
       9             :    | available through the world-wide-web at the following url:           |
      10             :    | http://www.php.net/license/3_01.txt                                  |
      11             :    | If you did not receive a copy of the PHP license and are unable to   |
      12             :    | obtain it through the world-wide-web, please send a note to          |
      13             :    | license@php.net so we can mail you a copy immediately.               |
      14             :    +----------------------------------------------------------------------+
      15             :    | Authors: Shane Caraveo <shane@php.net>                               |
      16             :    |          Wez Furlong <wez@thebrainroom.com>                          |
      17             :    +----------------------------------------------------------------------+
      18             :  */
      19             : 
      20             : /* $Id$ */
      21             : 
      22             : #define IS_EXT_MODULE
      23             : 
      24             : #ifdef HAVE_CONFIG_H
      25             : #include "config.h"
      26             : #endif
      27             : 
      28             : #include "php.h"
      29             : #include "SAPI.h"
      30             : 
      31             : #define PHP_XML_INTERNAL
      32             : #include "zend_variables.h"
      33             : #include "ext/standard/php_string.h"
      34             : #include "ext/standard/info.h"
      35             : #include "ext/standard/file.h"
      36             : 
      37             : #if HAVE_LIBXML
      38             : 
      39             : #include <libxml/parser.h>
      40             : #include <libxml/parserInternals.h>
      41             : #include <libxml/tree.h>
      42             : #include <libxml/uri.h>
      43             : #include <libxml/xmlerror.h>
      44             : #include <libxml/xmlsave.h>
      45             : #ifdef LIBXML_SCHEMAS_ENABLED
      46             : #include <libxml/relaxng.h>
      47             : #include <libxml/xmlschemas.h>
      48             : #endif
      49             : 
      50             : #include "php_libxml.h"
      51             : 
      52             : #define PHP_LIBXML_ERROR 0
      53             : #define PHP_LIBXML_CTX_ERROR 1
      54             : #define PHP_LIBXML_CTX_WARNING 2
      55             : 
      56             : /* a true global for initialization */
      57             : static int _php_libxml_initialized = 0;
      58             : static int _php_libxml_per_request_initialization = 1;
      59             : static xmlExternalEntityLoader _php_libxml_default_entity_loader;
      60             : 
      61             : typedef struct _php_libxml_func_handler {
      62             :         php_libxml_export_node export_func;
      63             : } php_libxml_func_handler;
      64             : 
      65             : static HashTable php_libxml_exports;
      66             : 
      67             : static ZEND_DECLARE_MODULE_GLOBALS(libxml)
      68             : static PHP_GINIT_FUNCTION(libxml);
      69             : 
      70             : static PHP_FUNCTION(libxml_set_streams_context);
      71             : static PHP_FUNCTION(libxml_use_internal_errors);
      72             : static PHP_FUNCTION(libxml_get_last_error);
      73             : static PHP_FUNCTION(libxml_clear_errors);
      74             : static PHP_FUNCTION(libxml_get_errors);
      75             : static PHP_FUNCTION(libxml_set_external_entity_loader);
      76             : static PHP_FUNCTION(libxml_disable_entity_loader);
      77             : 
      78             : static zend_class_entry *libxmlerror_class_entry;
      79             : 
      80             : /* {{{ dynamically loadable module stuff */
      81             : #ifdef COMPILE_DL_LIBXML
      82             : #ifdef ZTS
      83             : ZEND_TSRMLS_CACHE_DEFINE();
      84             : #endif
      85             : ZEND_GET_MODULE(libxml)
      86             : #endif /* COMPILE_DL_LIBXML */
      87             : /* }}} */
      88             : 
      89             : /* {{{ function prototypes */
      90             : static PHP_MINIT_FUNCTION(libxml);
      91             : static PHP_RINIT_FUNCTION(libxml);
      92             : static PHP_RSHUTDOWN_FUNCTION(libxml);
      93             : static PHP_MSHUTDOWN_FUNCTION(libxml);
      94             : static PHP_MINFO_FUNCTION(libxml);
      95             : static int php_libxml_post_deactivate(void);
      96             : 
      97             : /* }}} */
      98             : 
      99             : /* {{{ arginfo */
     100             : ZEND_BEGIN_ARG_INFO(arginfo_libxml_set_streams_context, 0)
     101             :         ZEND_ARG_INFO(0, context)
     102             : ZEND_END_ARG_INFO()
     103             : 
     104             : ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_use_internal_errors, 0, 0, 0)
     105             :         ZEND_ARG_INFO(0, use_errors)
     106             : ZEND_END_ARG_INFO()
     107             : 
     108             : ZEND_BEGIN_ARG_INFO(arginfo_libxml_get_last_error, 0)
     109             : ZEND_END_ARG_INFO()
     110             : 
     111             : ZEND_BEGIN_ARG_INFO(arginfo_libxml_get_errors, 0)
     112             : ZEND_END_ARG_INFO()
     113             : 
     114             : ZEND_BEGIN_ARG_INFO(arginfo_libxml_clear_errors, 0)
     115             : ZEND_END_ARG_INFO()
     116             : 
     117             : ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_disable_entity_loader, 0, 0, 0)
     118             :         ZEND_ARG_INFO(0, disable)
     119             : ZEND_END_ARG_INFO()
     120             : 
     121             : ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_set_external_entity_loader, 0, 0, 1)
     122             :         ZEND_ARG_INFO(0, resolver_function)
     123             : ZEND_END_ARG_INFO()
     124             : /* }}} */
     125             : 
     126             : /* {{{ extension definition structures */
     127             : static const zend_function_entry libxml_functions[] = {
     128             :         PHP_FE(libxml_set_streams_context, arginfo_libxml_set_streams_context)
     129             :         PHP_FE(libxml_use_internal_errors, arginfo_libxml_use_internal_errors)
     130             :         PHP_FE(libxml_get_last_error, arginfo_libxml_get_last_error)
     131             :         PHP_FE(libxml_clear_errors, arginfo_libxml_clear_errors)
     132             :         PHP_FE(libxml_get_errors, arginfo_libxml_get_errors)
     133             :         PHP_FE(libxml_disable_entity_loader, arginfo_libxml_disable_entity_loader)
     134             :         PHP_FE(libxml_set_external_entity_loader, arginfo_libxml_set_external_entity_loader)
     135             :         PHP_FE_END
     136             : };
     137             : 
     138             : zend_module_entry libxml_module_entry = {
     139             :         STANDARD_MODULE_HEADER,
     140             :         "libxml",                /* extension name */
     141             :         libxml_functions,        /* extension function list */
     142             :         PHP_MINIT(libxml),       /* extension-wide startup function */
     143             :         PHP_MSHUTDOWN(libxml),   /* extension-wide shutdown function */
     144             :         PHP_RINIT(libxml),       /* per-request startup function */
     145             :         PHP_RSHUTDOWN(libxml),   /* per-request shutdown function */
     146             :         PHP_MINFO(libxml),       /* information function */
     147             :         PHP_LIBXML_VERSION,
     148             :         PHP_MODULE_GLOBALS(libxml), /* globals descriptor */
     149             :         PHP_GINIT(libxml),          /* globals ctor */
     150             :         NULL,                       /* globals dtor */
     151             :         php_libxml_post_deactivate, /* post deactivate */
     152             :         STANDARD_MODULE_PROPERTIES_EX
     153             : };
     154             : 
     155             : /* }}} */
     156             : 
     157             : /* {{{ internal functions for interoperability */
     158           7 : static int php_libxml_clear_object(php_libxml_node_object *object)
     159             : {
     160           7 :         if (object->properties) {
     161           7 :                 object->properties = NULL;
     162             :         }
     163           7 :         php_libxml_decrement_node_ptr(object);
     164           7 :         return php_libxml_decrement_doc_ref(object);
     165             : }
     166             : 
     167      203655 : static int php_libxml_unregister_node(xmlNodePtr nodep)
     168             : {
     169             :         php_libxml_node_object *wrapper;
     170             : 
     171      203655 :         php_libxml_node_ptr *nodeptr = nodep->_private;
     172             : 
     173      203655 :         if (nodeptr != NULL) {
     174          10 :                 wrapper = nodeptr->_private;
     175          10 :                 if (wrapper) {
     176           7 :                         php_libxml_clear_object(wrapper);
     177             :                 } else {
     178           3 :                         if (nodeptr->node != NULL && nodeptr->node->type != XML_DOCUMENT_NODE) {
     179           3 :                                 nodeptr->node->_private = NULL;
     180             :                         }
     181           3 :                         nodeptr->node = NULL;
     182             :                 }
     183             :         }
     184             : 
     185      203655 :         return -1;
     186             : }
     187             : 
     188         316 : static void php_libxml_node_free(xmlNodePtr node)
     189             : {
     190         316 :         if(node) {
     191         316 :                 if (node->_private != NULL) {
     192           0 :                         ((php_libxml_node_ptr *) node->_private)->node = NULL;
     193             :                 }
     194         316 :                 switch (node->type) {
     195             :                         case XML_ATTRIBUTE_NODE:
     196          32 :                                 xmlFreeProp((xmlAttrPtr) node);
     197          32 :                                 break;
     198             :                         case XML_ENTITY_DECL:
     199             :                         case XML_ELEMENT_DECL:
     200             :                         case XML_ATTRIBUTE_DECL:
     201           2 :                                 break;
     202             :                         case XML_NOTATION_NODE:
     203             :                                 /* These require special handling */
     204           5 :                                 if (node->name != NULL) {
     205           5 :                                         xmlFree((char *) node->name);
     206             :                                 }
     207           5 :                                 if (((xmlEntityPtr) node)->ExternalID != NULL) {
     208           5 :                                         xmlFree((char *) ((xmlEntityPtr) node)->ExternalID);
     209             :                                 }
     210           5 :                                 if (((xmlEntityPtr) node)->SystemID != NULL) {
     211           4 :                                         xmlFree((char *) ((xmlEntityPtr) node)->SystemID);
     212             :                                 }
     213           5 :                                 xmlFree(node);
     214           5 :                                 break;
     215             :                         case XML_NAMESPACE_DECL:
     216           0 :                                 if (node->ns) {
     217           0 :                                         xmlFreeNs(node->ns);
     218           0 :                                         node->ns = NULL;
     219             :                                 }
     220           0 :                                 node->type = XML_ELEMENT_NODE;
     221             :                         default:
     222         277 :                                 xmlFreeNode(node);
     223             :                 }
     224             :         }
     225         316 : }
     226             : 
     227         456 : static void php_libxml_node_free_list(xmlNodePtr node)
     228             : {
     229             :         xmlNodePtr curnode;
     230             : 
     231         456 :         if (node != NULL) {
     232          96 :                 curnode = node;
     233         358 :                 while (curnode != NULL) {
     234         166 :                         node = curnode;
     235         166 :                         switch (node->type) {
     236             :                                 /* Skip property freeing for the following types */
     237             :                                 case XML_NOTATION_NODE:
     238             :                                 case XML_ENTITY_DECL:
     239           2 :                                         break;
     240             :                                 case XML_ENTITY_REF_NODE:
     241           0 :                                         php_libxml_node_free_list((xmlNodePtr) node->properties);
     242           0 :                                         break;
     243             :                                 case XML_ATTRIBUTE_NODE:
     244          18 :                                                 if ((node->doc != NULL) && (((xmlAttrPtr) node)->atype == XML_ATTRIBUTE_ID)) {
     245           1 :                                                         xmlRemoveID(node->doc, (xmlAttrPtr) node);
     246             :                                                 }
     247             :                                 case XML_ATTRIBUTE_DECL:
     248             :                                 case XML_DTD_NODE:
     249             :                                 case XML_DOCUMENT_TYPE_NODE:
     250             :                                 case XML_NAMESPACE_DECL:
     251             :                                 case XML_TEXT_NODE:
     252         124 :                                         php_libxml_node_free_list(node->children);
     253         124 :                                         break;
     254             :                                 default:
     255          40 :                                         php_libxml_node_free_list(node->children);
     256          40 :                                         php_libxml_node_free_list((xmlNodePtr) node->properties);
     257             :                         }
     258             : 
     259         166 :                         curnode = node->next;
     260         166 :                         xmlUnlinkNode(node);
     261         166 :                         if (php_libxml_unregister_node(node) == 0) {
     262           0 :                                 node->doc = NULL;
     263             :                         }
     264         166 :                         php_libxml_node_free(node);
     265             :                 }
     266             :         }
     267         456 : }
     268             : 
     269             : /* }}} */
     270             : 
     271             : /* {{{ startup, shutdown and info functions */
     272       21049 : static PHP_GINIT_FUNCTION(libxml)
     273             : {
     274             : #if defined(COMPILE_DL_LIBXML) && defined(ZTS)
     275             :         ZEND_TSRMLS_CACHE_UPDATE();
     276             : #endif
     277       21049 :         ZVAL_UNDEF(&libxml_globals->stream_context);
     278       21049 :         libxml_globals->error_buffer.s = NULL;
     279       21049 :         libxml_globals->error_list = NULL;
     280       21049 :         ZVAL_UNDEF(&libxml_globals->entity_loader.object);
     281       21049 :         libxml_globals->entity_loader.fci.size = 0;
     282       21049 :         libxml_globals->entity_loader_disabled = 0;
     283       21049 : }
     284             : 
     285       21049 : static void _php_libxml_destroy_fci(zend_fcall_info *fci, zval *object)
     286             : {
     287       21049 :         if (fci->size > 0) {
     288           4 :                 zval_ptr_dtor(&fci->function_name);
     289           4 :                 fci->size = 0;
     290             :         }
     291       21049 :         if (!Z_ISUNDEF_P(object)) {
     292           0 :                 zval_ptr_dtor(object);
     293           0 :                 ZVAL_UNDEF(object);
     294             :         }
     295       21049 : }
     296             : 
     297             : /* Channel libxml file io layer through the PHP streams subsystem.
     298             :  * This allows use of ftps:// and https:// urls */
     299             : 
     300         979 : static void *php_libxml_streams_IO_open_wrapper(const char *filename, const char *mode, const int read_only)
     301             : {
     302             :         php_stream_statbuf ssbuf;
     303         979 :         php_stream_context *context = NULL;
     304         979 :         php_stream_wrapper *wrapper = NULL;
     305             :         char *resolved_path;
     306         979 :         const char *path_to_open = NULL;
     307         979 :         void *ret_val = NULL;
     308         979 :         int isescaped=0;
     309             :         xmlURI *uri;
     310             : 
     311             : 
     312         979 :         uri = xmlParseURI(filename);
     313        1976 :         if (uri && (uri->scheme == NULL ||
     314          31 :                         (xmlStrncmp(BAD_CAST uri->scheme, BAD_CAST "file", 4) == 0))) {
     315         966 :                 resolved_path = xmlURIUnescapeString(filename, 0, NULL);
     316         966 :                 isescaped = 1;
     317             : #if LIBXML_VERSION >= 20902 && defined(PHP_WIN32)
     318             :                 /* Libxml 2.9.2 prefixes local paths with file:/ instead of file://,
     319             :                         thus the php stream wrapper will fail on a valid case. For this
     320             :                         reason the prefix is rather better cut off. */
     321             :                 {
     322             :                         size_t pre_len = sizeof("file:/") - 1;
     323             : 
     324             :                         if (strncasecmp(resolved_path, "file:/", pre_len) == 0
     325             :                                 && '/' != resolved_path[pre_len]) {
     326             :                                 xmlChar *tmp = xmlStrdup(resolved_path + pre_len);
     327             :                                 xmlFree(resolved_path);
     328             :                                 resolved_path = tmp;
     329             :                         }
     330             :                 }
     331             : #endif
     332             :         } else {
     333          13 :                 resolved_path = (char *)filename;
     334             :         }
     335             : 
     336         979 :         if (uri) {
     337         979 :                 xmlFreeURI(uri);
     338             :         }
     339             : 
     340         979 :         if (resolved_path == NULL) {
     341           0 :                 return NULL;
     342             :         }
     343             : 
     344             :         /* logic copied from _php_stream_stat, but we only want to fail
     345             :            if the wrapper supports stat, otherwise, figure it out from
     346             :            the open.  This logic is only to support hiding warnings
     347             :            that the streams layer puts out at times, but for libxml we
     348             :            may try to open files that don't exist, but it is not a failure
     349             :            in xml processing (eg. DTD files)  */
     350         979 :         wrapper = php_stream_locate_url_wrapper(resolved_path, &path_to_open, 0);
     351         979 :         if (wrapper && read_only && wrapper->wops->url_stat) {
     352         949 :                 if (wrapper->wops->url_stat(wrapper, path_to_open, PHP_STREAM_URL_STAT_QUIET, &ssbuf, NULL) == -1) {
     353          20 :                         if (isescaped) {
     354          19 :                                 xmlFree(resolved_path);
     355             :                         }
     356          20 :                         return NULL;
     357             :                 }
     358             :         }
     359             : 
     360        1694 :         context = php_stream_context_from_zval(Z_ISUNDEF(LIBXML(stream_context))? NULL : &LIBXML(stream_context), 0);
     361             : 
     362         959 :         ret_val = php_stream_open_wrapper_ex(path_to_open, (char *)mode, REPORT_ERRORS, NULL, context);
     363         959 :         if (isescaped) {
     364         947 :                 xmlFree(resolved_path);
     365             :         }
     366         959 :         return ret_val;
     367             : }
     368             : 
     369         958 : static void *php_libxml_streams_IO_open_read_wrapper(const char *filename)
     370             : {
     371         958 :         return php_libxml_streams_IO_open_wrapper(filename, "rb", 1);
     372             : }
     373             : 
     374          21 : static void *php_libxml_streams_IO_open_write_wrapper(const char *filename)
     375             : {
     376          21 :         return php_libxml_streams_IO_open_wrapper(filename, "wb", 0);
     377             : }
     378             : 
     379        3851 : static int php_libxml_streams_IO_read(void *context, char *buffer, int len)
     380             : {
     381        3851 :         return php_stream_read((php_stream*)context, buffer, len);
     382             : }
     383             : 
     384          39 : static int php_libxml_streams_IO_write(void *context, const char *buffer, int len)
     385             : {
     386          39 :         return php_stream_write((php_stream*)context, buffer, len);
     387             : }
     388             : 
     389         959 : static int php_libxml_streams_IO_close(void *context)
     390             : {
     391         959 :         return php_stream_close((php_stream*)context);
     392             : }
     393             : 
     394             : static xmlParserInputBufferPtr
     395         959 : php_libxml_input_buffer_create_filename(const char *URI, xmlCharEncoding enc)
     396             : {
     397             :         xmlParserInputBufferPtr ret;
     398         959 :         void *context = NULL;
     399             : 
     400         959 :         if (LIBXML(entity_loader_disabled)) {
     401           1 :                 return NULL;
     402             :         }
     403             : 
     404         958 :         if (URI == NULL)
     405           0 :                 return(NULL);
     406             : 
     407         958 :         context = php_libxml_streams_IO_open_read_wrapper(URI);
     408             : 
     409         958 :         if (context == NULL) {
     410          22 :                 return(NULL);
     411             :         }
     412             : 
     413             :         /* Allocate the Input buffer front-end. */
     414         936 :         ret = xmlAllocParserInputBuffer(enc);
     415         936 :         if (ret != NULL) {
     416         936 :                 ret->context = context;
     417         936 :                 ret->readcallback = php_libxml_streams_IO_read;
     418         936 :                 ret->closecallback = php_libxml_streams_IO_close;
     419             :         } else
     420           0 :                 php_libxml_streams_IO_close(context);
     421             : 
     422         936 :         return(ret);
     423             : }
     424             : 
     425             : static xmlOutputBufferPtr
     426          21 : php_libxml_output_buffer_create_filename(const char *URI,
     427             :                               xmlCharEncodingHandlerPtr encoder,
     428             :                               int compression ATTRIBUTE_UNUSED)
     429             : {
     430             :         xmlOutputBufferPtr ret;
     431             :         xmlURIPtr puri;
     432          21 :         void *context = NULL;
     433          21 :         char *unescaped = NULL;
     434             : 
     435          21 :         if (URI == NULL)
     436           0 :                 return(NULL);
     437             : 
     438          21 :         puri = xmlParseURI(URI);
     439          21 :         if (puri != NULL) {
     440          21 :                 if (puri->scheme != NULL)
     441           2 :                         unescaped = xmlURIUnescapeString(URI, 0, NULL);
     442          21 :                 xmlFreeURI(puri);
     443             :         }
     444             : 
     445          21 :         if (unescaped != NULL) {
     446           2 :                 context = php_libxml_streams_IO_open_write_wrapper(unescaped);
     447           2 :                 xmlFree(unescaped);
     448             :         }
     449             : 
     450             :         /* try with a non-escaped URI this may be a strange filename */
     451          21 :         if (context == NULL) {
     452          19 :                 context = php_libxml_streams_IO_open_write_wrapper(URI);
     453             :         }
     454             : 
     455          21 :         if (context == NULL) {
     456           1 :                 return(NULL);
     457             :         }
     458             : 
     459             :         /* Allocate the Output buffer front-end. */
     460          20 :         ret = xmlAllocOutputBuffer(encoder);
     461          20 :         if (ret != NULL) {
     462          20 :                 ret->context = context;
     463          20 :                 ret->writecallback = php_libxml_streams_IO_write;
     464          20 :                 ret->closecallback = php_libxml_streams_IO_close;
     465             :         }
     466             : 
     467          20 :         return(ret);
     468             : }
     469             : 
     470           3 : static int _php_libxml_free_error(xmlErrorPtr error)
     471             : {
     472             :         /* This will free the libxml alloc'd memory */
     473           3 :         xmlResetError(error);
     474           3 :         return 1;
     475             : }
     476             : 
     477           3 : static void _php_list_set_error_structure(xmlErrorPtr error, const char *msg)
     478             : {
     479             :         xmlError error_copy;
     480             :         int ret;
     481             : 
     482             : 
     483           3 :         memset(&error_copy, 0, sizeof(xmlError));
     484             : 
     485           3 :         if (error) {
     486           3 :                 ret = xmlCopyError(error, &error_copy);
     487             :         } else {
     488           0 :                 error_copy.domain = 0;
     489           0 :                 error_copy.code = XML_ERR_INTERNAL_ERROR;
     490           0 :                 error_copy.level = XML_ERR_ERROR;
     491           0 :                 error_copy.line = 0;
     492           0 :                 error_copy.node = NULL;
     493           0 :                 error_copy.int1 = 0;
     494           0 :                 error_copy.int2 = 0;
     495           0 :                 error_copy.ctxt = NULL;
     496           0 :                 error_copy.message = (char*)xmlStrdup((xmlChar*)msg);
     497           0 :                 error_copy.file = NULL;
     498           0 :                 error_copy.str1 = NULL;
     499           0 :                 error_copy.str2 = NULL;
     500           0 :                 error_copy.str3 = NULL;
     501           0 :                 ret = 0;
     502             :         }
     503             : 
     504           3 :         if (ret == 0) {
     505           3 :                 zend_llist_add_element(LIBXML(error_list), &error_copy);
     506             :         }
     507           3 : }
     508             : 
     509          35 : static void php_libxml_ctx_error_level(int level, void *ctx, const char *msg)
     510             : {
     511             :         xmlParserCtxtPtr parser;
     512             : 
     513          35 :         parser = (xmlParserCtxtPtr) ctx;
     514             : 
     515          35 :         if (parser != NULL && parser->input != NULL) {
     516          33 :                 if (parser->input->filename) {
     517          13 :                         php_error_docref(NULL, level, "%s in %s, line: %d", msg, parser->input->filename, parser->input->line);
     518             :                 } else {
     519          20 :                         php_error_docref(NULL, level, "%s in Entity, line: %d", msg, parser->input->line);
     520             :                 }
     521             :         }
     522          35 : }
     523             : 
     524           9 : void php_libxml_issue_error(int level, const char *msg)
     525             : {
     526           9 :         if (LIBXML(error_list)) {
     527           0 :                 _php_list_set_error_structure(NULL, msg);
     528             :         } else {
     529           9 :                 php_error_docref(NULL, level, "%s", msg);
     530             :         }
     531           9 : }
     532             : 
     533         183 : static void php_libxml_internal_error_handler(int error_type, void *ctx, const char **msg, va_list ap)
     534             : {
     535             :         char *buf;
     536         183 :         int len, len_iter, output = 0;
     537             : 
     538             : 
     539         183 :         len = vspprintf(&buf, 0, *msg, ap);
     540         183 :         len_iter = len;
     541             : 
     542             :         /* remove any trailing \n */
     543         504 :         while (len_iter && buf[--len_iter] == '\n') {
     544         138 :                 buf[len_iter] = '\0';
     545         138 :                 output = 1;
     546             :         }
     547             : 
     548         183 :         smart_str_appendl(&LIBXML(error_buffer), buf, len);
     549             : 
     550         183 :         efree(buf);
     551             : 
     552         183 :         if (output == 1) {
     553         138 :                 if (LIBXML(error_list)) {
     554           0 :                         _php_list_set_error_structure(NULL, LIBXML(error_buffer).s->val);
     555             :                 } else {
     556         138 :                         switch (error_type) {
     557             :                                 case PHP_LIBXML_CTX_ERROR:
     558          35 :                                         php_libxml_ctx_error_level(E_WARNING, ctx, LIBXML(error_buffer).s->val);
     559          35 :                                         break;
     560             :                                 case PHP_LIBXML_CTX_WARNING:
     561           0 :                                         php_libxml_ctx_error_level(E_NOTICE, ctx, LIBXML(error_buffer).s->val);
     562           0 :                                         break;
     563             :                                 default:
     564         103 :                                         php_error_docref(NULL, E_WARNING, "%s", LIBXML(error_buffer).s->val);
     565             :                         }
     566             :                 }
     567             :                 smart_str_free(&LIBXML(error_buffer));
     568             :         }
     569         183 : }
     570             : 
     571         941 : static xmlParserInputPtr _php_libxml_external_entity_loader(const char *URL,
     572             :                 const char *ID, xmlParserCtxtPtr context)
     573             : {
     574         941 :         xmlParserInputPtr       ret                     = NULL;
     575         941 :         const char                      *resource       = NULL;
     576             :         zval                            *ctxzv, retval;
     577             :         zval                            params[3];
     578             :         int                                     status;
     579             :         zend_fcall_info         *fci;
     580             : 
     581         941 :         fci = &LIBXML(entity_loader).fci;
     582             : 
     583         941 :         if (fci->size == 0) {
     584             :                 /* no custom user-land callback set up; delegate to original loader */
     585         936 :                 return _php_libxml_default_entity_loader(URL, ID, context);
     586             :         }
     587             : 
     588           5 :         if (ID != NULL) {
     589          10 :                 ZVAL_STRING(&params[0], ID);
     590             :         } else {
     591           0 :                 ZVAL_UNDEF(&params[0]);
     592             :         }
     593           5 :         if (URL != NULL) {
     594          10 :                 ZVAL_STRING(&params[1], URL);
     595             :         } else {
     596           0 :                 ZVAL_UNDEF(&params[1]);
     597             :         }
     598           5 :         ctxzv = &params[2];
     599           5 :         array_init_size(ctxzv, 4);
     600             : 
     601             : #define ADD_NULL_OR_STRING_KEY(memb) \
     602             :         if (context->memb == NULL) { \
     603             :                 add_assoc_null_ex(ctxzv, #memb, sizeof(#memb) - 1); \
     604             :         } else { \
     605             :                 add_assoc_string_ex(ctxzv, #memb, sizeof(#memb) - 1, \
     606             :                                 (char *)context->memb); \
     607             :         }
     608             : 
     609           5 :         ADD_NULL_OR_STRING_KEY(directory)
     610           5 :         ADD_NULL_OR_STRING_KEY(intSubName)
     611           5 :         ADD_NULL_OR_STRING_KEY(extSubURI)
     612           5 :         ADD_NULL_OR_STRING_KEY(extSubSystem)
     613             : 
     614             : #undef ADD_NULL_OR_STRING_KEY
     615             : 
     616           5 :         fci->retval  = &retval;
     617           5 :         fci->params  = params;
     618           5 :         fci->param_count = sizeof(params)/sizeof(*params);
     619           5 :         fci->no_separation   = 1;
     620             : 
     621           5 :         status = zend_call_function(fci, &LIBXML(entity_loader).fcc);
     622          10 :         if (status != SUCCESS || Z_ISUNDEF(retval)) {
     623           0 :                 php_libxml_ctx_error(context,
     624             :                                 "Call to user entity loader callback '%s' has failed",
     625           0 :                                 Z_STRVAL(fci->function_name));
     626             :         } else {
     627             :                 /*
     628             :                 retval_ptr = *fci->retval_ptr_ptr;
     629             :                 if (retval_ptr == NULL) {
     630             :                         php_libxml_ctx_error(context,
     631             :                                         "Call to user entity loader callback '%s' has failed; "
     632             :                                         "probably it has thrown an exception",
     633             :                                         fci->function_name);
     634           5 :                 } else */ if (Z_TYPE(retval) == IS_STRING) {
     635             : is_string:
     636           0 :                         resource = Z_STRVAL(retval);
     637           5 :                 } else if (Z_TYPE(retval) == IS_RESOURCE) {
     638             :                         php_stream *stream;
     639           3 :                         php_stream_from_zval_no_verify(stream, &retval);
     640           3 :                         if (stream == NULL) {
     641           0 :                                 php_libxml_ctx_error(context,
     642             :                                                 "The user entity loader callback '%s' has returned a "
     643             :                                                 "resource, but it is not a stream",
     644           0 :                                                 Z_STRVAL(fci->function_name));
     645             :                         } else {
     646             :                                 /* TODO: allow storing the encoding in the stream context? */
     647           3 :                                 xmlCharEncoding enc = XML_CHAR_ENCODING_NONE;
     648           3 :                                 xmlParserInputBufferPtr pib = xmlAllocParserInputBuffer(enc);
     649           3 :                                 if (pib == NULL) {
     650           0 :                                         php_libxml_ctx_error(context, "Could not allocate parser "
     651             :                                                         "input buffer");
     652             :                                 } else {
     653             :                                         /* make stream not being closed when the zval is freed */
     654           3 :                                         ++GC_REFCOUNT(stream->res);
     655           3 :                                         pib->context = stream;
     656           3 :                                         pib->readcallback = php_libxml_streams_IO_read;
     657           3 :                                         pib->closecallback = php_libxml_streams_IO_close;
     658             : 
     659           3 :                                         ret = xmlNewIOInputStream(context, pib, enc);
     660           3 :                                         if (ret == NULL) {
     661           0 :                                                 xmlFreeParserInputBuffer(pib);
     662             :                                         }
     663             :                                 }
     664             :                         }
     665           2 :                 } else if (Z_TYPE(retval) != IS_NULL) {
     666             :                         /* retval not string nor resource nor null; convert to string */
     667           0 :                         SEPARATE_ZVAL(&retval);
     668           0 :                         convert_to_string(&retval);
     669           0 :                         goto is_string;
     670             :                 } /* else is null; don't try anything */
     671             :         }
     672             : 
     673           5 :         if (ret == NULL) {
     674           2 :                 if (resource == NULL) {
     675           2 :                         if (ID == NULL) {
     676           0 :                                 ID = "NULL";
     677             :                         }
     678           2 :                         php_libxml_ctx_error(context,
     679             :                                         "Failed to load external entity \"%s\"\n", ID);
     680             :                 } else {
     681             :                         /* we got the resource in the form of a string; open it */
     682           0 :                         ret = xmlNewInputFromFile(context, resource);
     683             :                 }
     684             :         }
     685             : 
     686           5 :         zval_ptr_dtor(&params[0]);
     687           5 :         zval_ptr_dtor(&params[1]);
     688           5 :         zval_ptr_dtor(&params[2]);
     689           5 :         zval_ptr_dtor(&retval);
     690           5 :         return ret;
     691             : }
     692             : 
     693         941 : static xmlParserInputPtr _php_libxml_pre_ext_ent_loader(const char *URL,
     694             :                 const char *ID, xmlParserCtxtPtr context)
     695             : {
     696             : 
     697             :         /* Check whether we're running in a PHP context, since the entity loader
     698             :          * we've defined is an application level (true global) setting.
     699             :          * If we are, we also want to check whether we've finished activating
     700             :          * the modules (RINIT phase). Using our external entity loader during a
     701             :          * RINIT should not be problem per se (though during MINIT it is, because
     702             :          * we don't even have a resource list by then), but then whether one
     703             :          * extension would be using the custom external entity loader or not
     704             :          * could depend on extension loading order
     705             :          * (if _php_libxml_per_request_initialization */
     706         941 :         if (xmlGenericError == php_libxml_error_handler && PG(modules_activated)) {
     707         941 :                 return _php_libxml_external_entity_loader(URL, ID, context);
     708             :         } else {
     709           0 :                 return _php_libxml_default_entity_loader(URL, ID, context);
     710             :         }
     711             : }
     712             : 
     713          35 : PHP_LIBXML_API void php_libxml_ctx_error(void *ctx, const char *msg, ...)
     714             : {
     715             :         va_list args;
     716          35 :         va_start(args, msg);
     717          35 :         php_libxml_internal_error_handler(PHP_LIBXML_CTX_ERROR, ctx, &msg, args);
     718          35 :         va_end(args);
     719          35 : }
     720             : 
     721           0 : PHP_LIBXML_API void php_libxml_ctx_warning(void *ctx, const char *msg, ...)
     722             : {
     723             :         va_list args;
     724           0 :         va_start(args, msg);
     725           0 :         php_libxml_internal_error_handler(PHP_LIBXML_CTX_WARNING, ctx, &msg, args);
     726           0 :         va_end(args);
     727           0 : }
     728             : 
     729           3 : PHP_LIBXML_API void php_libxml_structured_error_handler(void *userData, xmlErrorPtr error)
     730             : {
     731           3 :         _php_list_set_error_structure(error, NULL);
     732             : 
     733           3 :         return;
     734             : }
     735             : 
     736         148 : PHP_LIBXML_API void php_libxml_error_handler(void *ctx, const char *msg, ...)
     737             : {
     738             :         va_list args;
     739         148 :         va_start(args, msg);
     740         148 :         php_libxml_internal_error_handler(PHP_LIBXML_ERROR, ctx, &msg, args);
     741         148 :         va_end(args);
     742         148 : }
     743             : 
     744       42170 : static void php_libxml_exports_dtor(zval *zv)
     745             : {
     746       42170 :         free(Z_PTR_P(zv));
     747       42170 : }
     748             : 
     749       63147 : PHP_LIBXML_API void php_libxml_initialize(void)
     750             : {
     751       63147 :         if (!_php_libxml_initialized) {
     752             :                 /* we should be the only one's to ever init!! */
     753       21049 :                 xmlInitParser();
     754             : 
     755       21049 :                 _php_libxml_default_entity_loader = xmlGetExternalEntityLoader();
     756       21049 :                 xmlSetExternalEntityLoader(_php_libxml_pre_ext_ent_loader);
     757             : 
     758       21049 :                 zend_hash_init(&php_libxml_exports, 0, NULL, php_libxml_exports_dtor, 1);
     759             : 
     760       21049 :                 _php_libxml_initialized = 1;
     761             :         }
     762       63147 : }
     763             : 
     764       21085 : PHP_LIBXML_API void php_libxml_shutdown(void)
     765             : {
     766       21085 :         if (_php_libxml_initialized) {
     767             : #if defined(LIBXML_SCHEMAS_ENABLED)
     768       21085 :                 xmlRelaxNGCleanupTypes();
     769             : #endif
     770             :                 /* xmlCleanupParser(); */
     771       21085 :                 zend_hash_destroy(&php_libxml_exports);
     772             : 
     773       21085 :                 xmlSetExternalEntityLoader(_php_libxml_default_entity_loader);
     774       21085 :                 _php_libxml_initialized = 0;
     775             :         }
     776       21085 : }
     777             : 
     778        1413 : PHP_LIBXML_API void php_libxml_switch_context(zval *context, zval *oldcontext)
     779             : {
     780        1413 :         if (oldcontext) {
     781         709 :                 ZVAL_COPY_VALUE(oldcontext, &LIBXML(stream_context));
     782             :         }
     783        1413 :         if (context) {
     784        1413 :                 ZVAL_COPY_VALUE(&LIBXML(stream_context), context);
     785             :         }
     786        1413 : }
     787             : 
     788       21049 : static PHP_MINIT_FUNCTION(libxml)
     789             : {
     790             :         zend_class_entry ce;
     791             : 
     792       21049 :         php_libxml_initialize();
     793             : 
     794       21049 :         REGISTER_LONG_CONSTANT("LIBXML_VERSION",                      LIBXML_VERSION,                 CONST_CS | CONST_PERSISTENT);
     795       21049 :         REGISTER_STRING_CONSTANT("LIBXML_DOTTED_VERSION",     LIBXML_DOTTED_VERSION,  CONST_CS | CONST_PERSISTENT);
     796       21049 :         REGISTER_STRING_CONSTANT("LIBXML_LOADED_VERSION",     (char *)xmlParserVersion,               CONST_CS | CONST_PERSISTENT);
     797             : 
     798             :         /* For use with loading xml */
     799       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOENT",                XML_PARSE_NOENT,                CONST_CS | CONST_PERSISTENT);
     800       21049 :         REGISTER_LONG_CONSTANT("LIBXML_DTDLOAD",      XML_PARSE_DTDLOAD,              CONST_CS | CONST_PERSISTENT);
     801       21049 :         REGISTER_LONG_CONSTANT("LIBXML_DTDATTR",      XML_PARSE_DTDATTR,              CONST_CS | CONST_PERSISTENT);
     802       21049 :         REGISTER_LONG_CONSTANT("LIBXML_DTDVALID",     XML_PARSE_DTDVALID,             CONST_CS | CONST_PERSISTENT);
     803       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOERROR",      XML_PARSE_NOERROR,              CONST_CS | CONST_PERSISTENT);
     804       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOWARNING",    XML_PARSE_NOWARNING,    CONST_CS | CONST_PERSISTENT);
     805       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOBLANKS",     XML_PARSE_NOBLANKS,             CONST_CS | CONST_PERSISTENT);
     806       21049 :         REGISTER_LONG_CONSTANT("LIBXML_XINCLUDE",     XML_PARSE_XINCLUDE,             CONST_CS | CONST_PERSISTENT);
     807       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NSCLEAN",      XML_PARSE_NSCLEAN,              CONST_CS | CONST_PERSISTENT);
     808       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOCDATA",      XML_PARSE_NOCDATA,              CONST_CS | CONST_PERSISTENT);
     809       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NONET",                XML_PARSE_NONET,                CONST_CS | CONST_PERSISTENT);
     810       21049 :         REGISTER_LONG_CONSTANT("LIBXML_PEDANTIC",     XML_PARSE_PEDANTIC,             CONST_CS | CONST_PERSISTENT);
     811             : #if LIBXML_VERSION >= 20621
     812       21049 :         REGISTER_LONG_CONSTANT("LIBXML_COMPACT",      XML_PARSE_COMPACT,              CONST_CS | CONST_PERSISTENT);
     813       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOXMLDECL",    XML_SAVE_NO_DECL,               CONST_CS | CONST_PERSISTENT);
     814             : #endif
     815             : #if LIBXML_VERSION >= 20703
     816       21049 :         REGISTER_LONG_CONSTANT("LIBXML_PARSEHUGE",    XML_PARSE_HUGE,                 CONST_CS | CONST_PERSISTENT);
     817             : #endif
     818             : #if LIBXML_VERSION >= 20900
     819             :         REGISTER_LONG_CONSTANT("LIBXML_BIGLINES",     XML_PARSE_BIG_LINES,    CONST_CS | CONST_PERSISTENT);
     820             : #endif
     821       21049 :         REGISTER_LONG_CONSTANT("LIBXML_NOEMPTYTAG",   LIBXML_SAVE_NOEMPTYTAG, CONST_CS | CONST_PERSISTENT);
     822             : 
     823             :         /* Schema validation options */
     824             : #if defined(LIBXML_SCHEMAS_ENABLED) && LIBXML_VERSION >= 20614
     825       21049 :         REGISTER_LONG_CONSTANT("LIBXML_SCHEMA_CREATE",        XML_SCHEMA_VAL_VC_I_CREATE,     CONST_CS | CONST_PERSISTENT);
     826             : #endif
     827             : 
     828             :         /* Additional constants for use with loading html */
     829             : #if LIBXML_VERSION >= 20707
     830             :         REGISTER_LONG_CONSTANT("LIBXML_HTML_NOIMPLIED",       HTML_PARSE_NOIMPLIED,           CONST_CS | CONST_PERSISTENT);
     831             : #endif
     832             : 
     833             : #if LIBXML_VERSION >= 20708
     834             :         REGISTER_LONG_CONSTANT("LIBXML_HTML_NODEFDTD",        HTML_PARSE_NODEFDTD,            CONST_CS | CONST_PERSISTENT);
     835             : #endif
     836             : 
     837             :         /* Error levels */
     838       21049 :         REGISTER_LONG_CONSTANT("LIBXML_ERR_NONE",             XML_ERR_NONE,           CONST_CS | CONST_PERSISTENT);
     839       21049 :         REGISTER_LONG_CONSTANT("LIBXML_ERR_WARNING",  XML_ERR_WARNING,        CONST_CS | CONST_PERSISTENT);
     840       21049 :         REGISTER_LONG_CONSTANT("LIBXML_ERR_ERROR",            XML_ERR_ERROR,          CONST_CS | CONST_PERSISTENT);
     841       21049 :         REGISTER_LONG_CONSTANT("LIBXML_ERR_FATAL",            XML_ERR_FATAL,          CONST_CS | CONST_PERSISTENT);
     842             : 
     843       21049 :         INIT_CLASS_ENTRY(ce, "LibXMLError", NULL);
     844       21049 :         libxmlerror_class_entry = zend_register_internal_class(&ce);
     845             : 
     846       21049 :         if (sapi_module.name) {
     847             :                 static const char * const supported_sapis[] = {
     848             :                         "cgi-fcgi",
     849             :                         "fpm-fcgi",
     850             :                         "litespeed",
     851             :                         NULL
     852             :                 };
     853             :                 const char * const *sapi_name;
     854             : 
     855       82978 :                 for (sapi_name = supported_sapis; *sapi_name; sapi_name++) {
     856       62335 :                         if (strcmp(sapi_module.name, *sapi_name) == 0) {
     857         406 :                                 _php_libxml_per_request_initialization = 0;
     858         406 :                                 break;
     859             :                         }
     860             :                 }
     861             :         }
     862             : 
     863       21049 :         if (!_php_libxml_per_request_initialization) {
     864             :                 /* report errors via handler rather than stderr */
     865         406 :                 xmlSetGenericErrorFunc(NULL, php_libxml_error_handler);
     866         406 :                 xmlParserInputBufferCreateFilenameDefault(php_libxml_input_buffer_create_filename);
     867         406 :                 xmlOutputBufferCreateFilenameDefault(php_libxml_output_buffer_create_filename);
     868             :         }
     869             : 
     870       21049 :         return SUCCESS;
     871             : }
     872             : 
     873             : 
     874       21006 : static PHP_RINIT_FUNCTION(libxml)
     875             : {
     876       21006 :         if (_php_libxml_per_request_initialization) {
     877             :                 /* report errors via handler rather than stderr */
     878       20600 :                 xmlSetGenericErrorFunc(NULL, php_libxml_error_handler);
     879       20600 :                 xmlParserInputBufferCreateFilenameDefault(php_libxml_input_buffer_create_filename);
     880       20600 :                 xmlOutputBufferCreateFilenameDefault(php_libxml_output_buffer_create_filename);
     881             : 
     882             :                 /* Enable the entity loader by default. This ensures that
     883             :                  * other threads/requests that might have disabled the loader
     884             :                  * do not affect the current request.
     885             :                  */
     886       20600 :                 LIBXML(entity_loader_disabled) = 0;
     887             :         }
     888       21006 :         return SUCCESS;
     889             : }
     890             : 
     891       21044 : static PHP_RSHUTDOWN_FUNCTION(libxml)
     892             : {
     893       21044 :         _php_libxml_destroy_fci(&LIBXML(entity_loader).fci, &LIBXML(entity_loader).object);
     894             : 
     895       21044 :         return SUCCESS;
     896             : }
     897             : 
     898       21085 : static PHP_MSHUTDOWN_FUNCTION(libxml)
     899             : {
     900       21085 :         if (!_php_libxml_per_request_initialization) {
     901         403 :                 xmlSetGenericErrorFunc(NULL, NULL);
     902             : 
     903         403 :                 xmlParserInputBufferCreateFilenameDefault(NULL);
     904         403 :                 xmlOutputBufferCreateFilenameDefault(NULL);
     905             :         }
     906       21085 :         php_libxml_shutdown();
     907             : 
     908       21085 :         return SUCCESS;
     909             : }
     910             : 
     911       21044 : static int php_libxml_post_deactivate(void)
     912             : {
     913             :         /* reset libxml generic error handling */
     914       21044 :         if (_php_libxml_per_request_initialization) {
     915       20641 :                 xmlSetGenericErrorFunc(NULL, NULL);
     916             : 
     917       20641 :                 xmlParserInputBufferCreateFilenameDefault(NULL);
     918       20641 :                 xmlOutputBufferCreateFilenameDefault(NULL);
     919             :         }
     920       21044 :         xmlSetStructuredErrorFunc(NULL, NULL);
     921             : 
     922             :         /* the steam_context resource will be released by resource list destructor */
     923       21044 :         ZVAL_UNDEF(&LIBXML(stream_context));
     924             :         smart_str_free(&LIBXML(error_buffer));
     925       21044 :         if (LIBXML(error_list)) {
     926           2 :                 zend_llist_destroy(LIBXML(error_list));
     927           2 :                 efree(LIBXML(error_list));
     928           2 :                 LIBXML(error_list) = NULL;
     929             :         }
     930       21044 :         xmlResetLastError();
     931             : 
     932       21044 :         return SUCCESS;
     933             : }
     934             : 
     935             : 
     936         142 : static PHP_MINFO_FUNCTION(libxml)
     937             : {
     938         142 :         php_info_print_table_start();
     939         142 :         php_info_print_table_row(2, "libXML support", "active");
     940         142 :         php_info_print_table_row(2, "libXML Compiled Version", LIBXML_DOTTED_VERSION);
     941         142 :         php_info_print_table_row(2, "libXML Loaded Version", (char *)xmlParserVersion);
     942         142 :         php_info_print_table_row(2, "libXML streams", "enabled");
     943         142 :         php_info_print_table_end();
     944         142 : }
     945             : /* }}} */
     946             : 
     947             : /* {{{ proto void libxml_set_streams_context(resource streams_context)
     948             :    Set the streams context for the next libxml document load or write */
     949          11 : static PHP_FUNCTION(libxml_set_streams_context)
     950             : {
     951             :         zval *arg;
     952             : 
     953          11 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &arg) == FAILURE) {
     954           6 :                 return;
     955             :         }
     956           5 :         if (!Z_ISUNDEF(LIBXML(stream_context))) {
     957           2 :                 zval_ptr_dtor(&LIBXML(stream_context));
     958           2 :                 ZVAL_UNDEF(&LIBXML(stream_context));
     959             :         }
     960           5 :         ZVAL_COPY(&LIBXML(stream_context), arg);
     961             : }
     962             : /* }}} */
     963             : 
     964             : /* {{{ proto bool libxml_use_internal_errors([boolean use_errors])
     965             :    Disable libxml errors and allow user to fetch error information as needed */
     966           9 : static PHP_FUNCTION(libxml_use_internal_errors)
     967             : {
     968             :         xmlStructuredErrorFunc current_handler;
     969           9 :         zend_bool use_errors=0, retval;
     970             : 
     971           9 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &use_errors) == FAILURE) {
     972           1 :                 return;
     973             :         }
     974             : 
     975           8 :         current_handler = xmlStructuredError;
     976          11 :         if (current_handler && current_handler == php_libxml_structured_error_handler) {
     977           3 :                 retval = 1;
     978             :         } else {
     979           5 :                 retval = 0;
     980             :         }
     981             : 
     982           8 :         if (ZEND_NUM_ARGS() == 0) {
     983           1 :                 RETURN_BOOL(retval);
     984             :         }
     985             : 
     986           7 :         if (use_errors == 0) {
     987           3 :                 xmlSetStructuredErrorFunc(NULL, NULL);
     988           3 :                 if (LIBXML(error_list)) {
     989           2 :                         zend_llist_destroy(LIBXML(error_list));
     990           2 :                         efree(LIBXML(error_list));
     991           2 :                         LIBXML(error_list) = NULL;
     992             :                 }
     993             :         } else {
     994           4 :                 xmlSetStructuredErrorFunc(NULL, php_libxml_structured_error_handler);
     995           4 :                 if (LIBXML(error_list) == NULL) {
     996           4 :                         LIBXML(error_list) = (zend_llist *) emalloc(sizeof(zend_llist));
     997           4 :                         zend_llist_init(LIBXML(error_list), sizeof(xmlError), (llist_dtor_func_t) _php_libxml_free_error, 0);
     998             :                 }
     999             :         }
    1000           7 :         RETURN_BOOL(retval);
    1001             : }
    1002             : /* }}} */
    1003             : 
    1004             : /* {{{ proto object libxml_get_last_error()
    1005             :    Retrieve last error from libxml */
    1006           2 : static PHP_FUNCTION(libxml_get_last_error)
    1007             : {
    1008             :         xmlErrorPtr error;
    1009             : 
    1010           2 :         error = xmlGetLastError();
    1011             : 
    1012           2 :         if (error) {
    1013           1 :                 object_init_ex(return_value, libxmlerror_class_entry);
    1014           1 :                 add_property_long(return_value, "level", error->level);
    1015           1 :                 add_property_long(return_value, "code", error->code);
    1016           1 :                 add_property_long(return_value, "column", error->int2);
    1017           1 :                 if (error->message) {
    1018           1 :                         add_property_string(return_value, "message", error->message);
    1019             :                 } else {
    1020           0 :                         add_property_stringl(return_value, "message", "", 0);
    1021             :                 }
    1022           1 :                 if (error->file) {
    1023           0 :                         add_property_string(return_value, "file", error->file);
    1024             :                 } else {
    1025           1 :                         add_property_stringl(return_value, "file", "", 0);
    1026             :                 }
    1027           1 :                 add_property_long(return_value, "line", error->line);
    1028             :         } else {
    1029           1 :                 RETURN_FALSE;
    1030             :         }
    1031             : }
    1032             : /* }}} */
    1033             : 
    1034             : /* {{{ proto object libxml_get_errors()
    1035             :    Retrieve array of errors */
    1036           4 : static PHP_FUNCTION(libxml_get_errors)
    1037             : {
    1038             : 
    1039             :         xmlErrorPtr error;
    1040             : 
    1041           4 :         if (array_init(return_value) == FAILURE) {
    1042           0 :                 RETURN_FALSE;
    1043             :         }
    1044             : 
    1045           4 :         if (LIBXML(error_list)) {
    1046             : 
    1047           3 :                 error = zend_llist_get_first(LIBXML(error_list));
    1048             : 
    1049           8 :                 while (error != NULL) {
    1050             :                         zval z_error;
    1051             : 
    1052           2 :                         object_init_ex(&z_error, libxmlerror_class_entry);
    1053           2 :                         add_property_long_ex(&z_error, "level", sizeof("level") - 1, error->level);
    1054           2 :                         add_property_long_ex(&z_error, "code", sizeof("code") - 1, error->code);
    1055           2 :                         add_property_long_ex(&z_error, "column", sizeof("column") - 1, error->int2 );
    1056           2 :                         if (error->message) {
    1057           2 :                                 add_property_string_ex(&z_error, "message", sizeof("message") - 1, error->message);
    1058             :                         } else {
    1059           0 :                                 add_property_stringl_ex(&z_error, "message", sizeof("message") - 1, "", 0);
    1060             :                         }
    1061           2 :                         if (error->file) {
    1062           1 :                                 add_property_string_ex(&z_error, "file", sizeof("file") - 1, error->file);
    1063             :                         } else {
    1064           1 :                                 add_property_stringl_ex(&z_error, "file", sizeof("file") - 1, "", 0);
    1065             :                         }
    1066           2 :                         add_property_long_ex(&z_error, "line", sizeof("line") - 1, error->line);
    1067           2 :                         add_next_index_zval(return_value, &z_error);
    1068             : 
    1069           2 :                         error = zend_llist_get_next(LIBXML(error_list));
    1070             :                 }
    1071             :         }
    1072             : }
    1073             : /* }}} */
    1074             : 
    1075             : /* {{{ proto void libxml_clear_errors()
    1076             :    Clear last error from libxml */
    1077           3 : static PHP_FUNCTION(libxml_clear_errors)
    1078             : {
    1079           3 :         xmlResetLastError();
    1080           3 :         if (LIBXML(error_list)) {
    1081           2 :                 zend_llist_clean(LIBXML(error_list));
    1082             :         }
    1083           3 : }
    1084             : /* }}} */
    1085             : 
    1086        2567 : PHP_LIBXML_API zend_bool php_libxml_disable_entity_loader(zend_bool disable) /* {{{ */
    1087             : {
    1088        2567 :         zend_bool old = LIBXML(entity_loader_disabled);
    1089             : 
    1090        2567 :         LIBXML(entity_loader_disabled) = disable;
    1091        2567 :         return old;
    1092             : } /* }}} */
    1093             : 
    1094             : /* {{{ proto bool libxml_disable_entity_loader([boolean disable])
    1095             :    Disable/Enable ability to load external entities */
    1096           1 : static PHP_FUNCTION(libxml_disable_entity_loader)
    1097             : {
    1098           1 :         zend_bool disable = 1;
    1099             : 
    1100           1 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &disable) == FAILURE) {
    1101           0 :                 return;
    1102             :         }
    1103             : 
    1104           1 :         RETURN_BOOL(php_libxml_disable_entity_loader(disable));
    1105             : }
    1106             : /* }}} */
    1107             : 
    1108             : /* {{{ proto void libxml_set_external_entity_loader(callback resolver_function)
    1109             :    Changes the default external entity loader */
    1110           8 : static PHP_FUNCTION(libxml_set_external_entity_loader)
    1111             : {
    1112             :         zend_fcall_info                 fci;
    1113             :         zend_fcall_info_cache   fcc;
    1114           8 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "f!", &fci, &fcc)
    1115             :                         == FAILURE) {
    1116           3 :                 return;
    1117             :         }
    1118             : 
    1119           5 :         _php_libxml_destroy_fci(&LIBXML(entity_loader).fci, &LIBXML(entity_loader).object);
    1120             : 
    1121           5 :         if (fci.size > 0) { /* argument not null */
    1122           4 :                 LIBXML(entity_loader).fci = fci;
    1123             :                 Z_ADDREF(fci.function_name);
    1124           4 :                 if (fci.object != NULL) {
    1125           0 :                         ZVAL_OBJ(&LIBXML(entity_loader).object, fci.object);
    1126             :                         Z_ADDREF(LIBXML(entity_loader).object);
    1127             :                 }
    1128           4 :                 LIBXML(entity_loader).fcc = fcc;
    1129             :         }
    1130             : 
    1131           5 :         RETURN_TRUE;
    1132             : }
    1133             : /* }}} */
    1134             : 
    1135             : /* {{{ Common functions shared by extensions */
    1136         809 : int php_libxml_xmlCheckUTF8(const unsigned char *s)
    1137             : {
    1138             :         int i;
    1139             :         unsigned char c;
    1140             : 
    1141        9344 :         for (i = 0; (c = s[i++]);) {
    1142        7727 :                 if ((c & 0x80) == 0) {
    1143         157 :                 } else if ((c & 0xe0) == 0xc0) {
    1144         156 :                         if ((s[i++] & 0xc0) != 0x80) {
    1145           0 :                                 return 0;
    1146             :                         }
    1147           1 :                 } else if ((c & 0xf0) == 0xe0) {
    1148           0 :                         if ((s[i++] & 0xc0) != 0x80 || (s[i++] & 0xc0) != 0x80) {
    1149           0 :                                 return 0;
    1150             :                         }
    1151           1 :                 } else if ((c & 0xf8) == 0xf0) {
    1152           0 :                         if ((s[i++] & 0xc0) != 0x80 || (s[i++] & 0xc0) != 0x80 || (s[i++] & 0xc0) != 0x80) {
    1153           0 :                                 return 0;
    1154             :                         }
    1155             :                 } else {
    1156           1 :                         return 0;
    1157             :                 }
    1158             :         }
    1159         808 :         return 1;
    1160             : }
    1161             : 
    1162       42098 : zval *php_libxml_register_export(zend_class_entry *ce, php_libxml_export_node export_function)
    1163             : {
    1164             :         php_libxml_func_handler export_hnd;
    1165             : 
    1166             :         /* Initialize in case this module hasn't been loaded yet */
    1167       42098 :         php_libxml_initialize();
    1168       42098 :         export_hnd.export_func = export_function;
    1169             : 
    1170       84196 :         return zend_hash_add_mem(&php_libxml_exports, ce->name, &export_hnd, sizeof(export_hnd));
    1171             : }
    1172             : 
    1173         111 : PHP_LIBXML_API xmlNodePtr php_libxml_import_node(zval *object)
    1174             : {
    1175         111 :         zend_class_entry *ce = NULL;
    1176         111 :         xmlNodePtr node = NULL;
    1177             :         php_libxml_func_handler *export_hnd;
    1178             : 
    1179         111 :         if (Z_TYPE_P(object) == IS_OBJECT) {
    1180         111 :                 ce = Z_OBJCE_P(object);
    1181         332 :                 while (ce->parent != NULL) {
    1182         110 :                         ce = ce->parent;
    1183             :                 }
    1184         222 :                 if ((export_hnd = zend_hash_find_ptr(&php_libxml_exports, ce->name))) {
    1185         111 :                         node = export_hnd->export_func(object);
    1186             :                 }
    1187             :         }
    1188         111 :         return node;
    1189             : }
    1190             : 
    1191      404763 : PHP_LIBXML_API int php_libxml_increment_node_ptr(php_libxml_node_object *object, xmlNodePtr node, void *private_data)
    1192             : {
    1193      404763 :         int ret_refcount = -1;
    1194             : 
    1195      404763 :         if (object != NULL && node != NULL) {
    1196      404758 :                 if (object->node != NULL) {
    1197           0 :                         if (object->node->node == node) {
    1198           0 :                                 return object->node->refcount;
    1199             :                         } else {
    1200           0 :                                 php_libxml_decrement_node_ptr(object);
    1201             :                         }
    1202             :                 }
    1203      404758 :                 if (node->_private != NULL) {
    1204      200655 :                         object->node = node->_private;
    1205      200655 :                         ret_refcount = ++object->node->refcount;
    1206             :                         /* Only dom uses _private */
    1207      200655 :                         if (object->node->_private == NULL) {
    1208      200655 :                                 object->node->_private = private_data;
    1209             :                         }
    1210             :                 } else {
    1211      204103 :                         ret_refcount = 1;
    1212      204103 :                         object->node = emalloc(sizeof(php_libxml_node_ptr));
    1213      204103 :                         object->node->node = node;
    1214      204103 :                         object->node->refcount = 1;
    1215      204103 :                         object->node->_private = private_data;
    1216      204103 :                         node->_private = object->node;
    1217             :                 }
    1218             :         }
    1219             : 
    1220      404763 :         return ret_refcount;
    1221             : }
    1222             : 
    1223      404758 : PHP_LIBXML_API int php_libxml_decrement_node_ptr(php_libxml_node_object *object)
    1224             : {
    1225      404758 :         int ret_refcount = -1;
    1226             :         php_libxml_node_ptr *obj_node;
    1227             : 
    1228      404758 :         if (object != NULL && object->node != NULL) {
    1229      404758 :                 obj_node = (php_libxml_node_ptr *) object->node;
    1230      404758 :                 ret_refcount = --obj_node->refcount;
    1231      404758 :                 if (ret_refcount == 0) {
    1232      204103 :                         if (obj_node->node != NULL) {
    1233      204100 :                                 obj_node->node->_private = NULL;
    1234             :                         }
    1235      204103 :                         efree(obj_node);
    1236             :                 }
    1237      404758 :                 object->node = NULL;
    1238             :         }
    1239             : 
    1240      404758 :         return ret_refcount;
    1241             : }
    1242             : 
    1243        3439 : PHP_LIBXML_API int php_libxml_increment_doc_ref(php_libxml_node_object *object, xmlDocPtr docp)
    1244             : {
    1245        3439 :         int ret_refcount = -1;
    1246             : 
    1247        3439 :         if (object->document != NULL) {
    1248         642 :                 object->document->refcount++;
    1249         642 :                 ret_refcount = object->document->refcount;
    1250        2797 :         } else if (docp != NULL) {
    1251        2797 :                 ret_refcount = 1;
    1252        2797 :                 object->document = emalloc(sizeof(php_libxml_ref_obj));
    1253        2797 :                 object->document->ptr = docp;
    1254        2797 :                 object->document->refcount = ret_refcount;
    1255        2797 :                 object->document->doc_props = NULL;
    1256             :         }
    1257             : 
    1258        3439 :         return ret_refcount;
    1259             : }
    1260             : 
    1261      404964 : PHP_LIBXML_API int php_libxml_decrement_doc_ref(php_libxml_node_object *object)
    1262             : {
    1263      404964 :         int ret_refcount = -1;
    1264             : 
    1265      404964 :         if (object != NULL && object->document != NULL) {
    1266      404793 :                 ret_refcount = --object->document->refcount;
    1267      404793 :                 if (ret_refcount == 0) {
    1268        2797 :                         if (object->document->ptr != NULL) {
    1269        2797 :                                 xmlFreeDoc((xmlDoc *) object->document->ptr);
    1270             :                         }
    1271        2797 :                         if (object->document->doc_props != NULL) {
    1272         349 :                                 if (object->document->doc_props->classmap) {
    1273           1 :                                         zend_hash_destroy(object->document->doc_props->classmap);
    1274           1 :                                         FREE_HASHTABLE(object->document->doc_props->classmap);
    1275             :                                 }
    1276         349 :                                 efree(object->document->doc_props);
    1277             :                         }
    1278        2797 :                         efree(object->document);
    1279        2797 :                         object->document = NULL;
    1280             :                 }
    1281             :         }
    1282             : 
    1283      404964 :         return ret_refcount;
    1284             : }
    1285             : 
    1286      203492 : PHP_LIBXML_API void php_libxml_node_free_resource(xmlNodePtr node)
    1287             : {
    1288      203492 :         if (!node) {
    1289           3 :                 return;
    1290             :         }
    1291             : 
    1292      203489 :         switch (node->type) {
    1293             :                 case XML_DOCUMENT_NODE:
    1294             :                 case XML_HTML_DOCUMENT_NODE:
    1295           0 :                         break;
    1296             :                 default:
    1297      203639 :                         if (node->parent == NULL || node->type == XML_NAMESPACE_DECL) {
    1298         150 :                                 php_libxml_node_free_list((xmlNodePtr) node->children);
    1299         150 :                                 switch (node->type) {
    1300             :                                         /* Skip property freeing for the following types */
    1301             :                                         case XML_ATTRIBUTE_DECL:
    1302             :                                         case XML_DTD_NODE:
    1303             :                                         case XML_DOCUMENT_TYPE_NODE:
    1304             :                                         case XML_ENTITY_DECL:
    1305             :                                         case XML_ATTRIBUTE_NODE:
    1306             :                                         case XML_NAMESPACE_DECL:
    1307             :                                         case XML_TEXT_NODE:
    1308          48 :                                                 break;
    1309             :                                         default:
    1310         102 :                                                 php_libxml_node_free_list((xmlNodePtr) node->properties);
    1311             :                                 }
    1312         150 :                                 if (php_libxml_unregister_node(node) == 0) {
    1313           0 :                                         node->doc = NULL;
    1314             :                                 }
    1315         150 :                                 php_libxml_node_free(node);
    1316             :                         } else {
    1317      203339 :                                 php_libxml_unregister_node(node);
    1318             :                         }
    1319             :         }
    1320             : }
    1321             : 
    1322      404113 : PHP_LIBXML_API void php_libxml_node_decrement_resource(php_libxml_node_object *object)
    1323             : {
    1324      404113 :         int ret_refcount = -1;
    1325             :         xmlNodePtr nodep;
    1326             :         php_libxml_node_ptr *obj_node;
    1327             : 
    1328      404113 :         if (object != NULL && object->node != NULL) {
    1329      404109 :                 obj_node = (php_libxml_node_ptr *) object->node;
    1330      404109 :                 nodep = object->node->node;
    1331      404109 :                 ret_refcount = php_libxml_decrement_node_ptr(object);
    1332      404109 :                 if (ret_refcount == 0) {
    1333      203454 :                         php_libxml_node_free_resource(nodep);
    1334             :                 } else {
    1335      200655 :                         if (obj_node && object == obj_node->_private) {
    1336           1 :                                 obj_node->_private = NULL;
    1337             :                         }
    1338             :                 }
    1339             :         }
    1340      404113 :         if (object != NULL && object->document != NULL) {
    1341             :                 /* Safe to call as if the resource were freed then doc pointer is NULL */
    1342      404089 :                 php_libxml_decrement_doc_ref(object);
    1343             :         }
    1344      404113 : }
    1345             : /* }}} */
    1346             : 
    1347             : #if defined(PHP_WIN32) && defined(COMPILE_DL_LIBXML)
    1348             : PHP_LIBXML_API BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
    1349             : {
    1350             :         return xmlDllMain(hinstDLL, fdwReason, lpvReserved);
    1351             : }
    1352             : #endif
    1353             : 
    1354             : #endif
    1355             : 
    1356             : /*
    1357             :  * Local variables:
    1358             :  * tab-width: 4
    1359             :  * c-basic-offset: 4
    1360             :  * End:
    1361             :  * vim600: sw=4 ts=4 fdm=marker
    1362             :  * vim<600: sw=4 ts=4
    1363             :  */

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