Nikolay Sivov : msxml3: Protect content callbacks from being called on reset content handler pointer .
Module: wine Branch: master Commit: 2dc6711f6d25fc33c088802cbec94e58419a1c2f URL: http://source.winehq.org/git/wine.git/?a=commit;h=2dc6711f6d25fc33c088802cbe... Author: Nikolay Sivov <nsivov(a)codeweavers.com> Date: Tue May 8 15:50:19 2012 +0400 msxml3: Protect content callbacks from being called on reset content handler pointer. --- dlls/msxml3/saxreader.c | 98 ++++++++++++++++++++++------------------------ 1 files changed, 47 insertions(+), 51 deletions(-) diff --git a/dlls/msxml3/saxreader.c b/dlls/msxml3/saxreader.c index 090f70c..0d46c4f 100644 --- a/dlls/msxml3/saxreader.c +++ b/dlls/msxml3/saxreader.c @@ -313,7 +313,7 @@ static BOOL is_namespaces_enabled(const saxreader *reader) return (reader->version < MSXML4) || (reader->features & Namespaces); } -static inline BOOL has_content_handler(const saxlocator *locator) +static inline int has_content_handler(const saxlocator *locator) { return (locator->vbInterface && locator->saxreader->vbcontentHandler) || (!locator->vbInterface && locator->saxreader->contentHandler); @@ -1288,6 +1288,7 @@ static void libxmlStartElementNS( saxlocator *This = ctx; element_entry *element; HRESULT hr = S_OK; + BSTR uri; update_position(This, TRUE); if(*(This->pParserCtxt->input->cur) == '/') @@ -1298,63 +1299,57 @@ static void libxmlStartElementNS( element = alloc_element_entry(localname, prefix, nb_namespaces, namespaces); push_element_ns(This, element); - if (has_content_handler(This)) + if (is_namespaces_enabled(This->saxreader)) { - BSTR uri; + int i; - if (is_namespaces_enabled(This->saxreader)) + for (i = 0; i < nb_namespaces && has_content_handler(This); i++) { - int i; + if (This->vbInterface) + hr = IVBSAXContentHandler_startPrefixMapping( + This->saxreader->vbcontentHandler, + &element->ns[i].prefix, + &element->ns[i].uri); + else + hr = ISAXContentHandler_startPrefixMapping( + This->saxreader->contentHandler, + element->ns[i].prefix, + SysStringLen(element->ns[i].prefix), + element->ns[i].uri, + SysStringLen(element->ns[i].uri)); - for (i = 0; i < nb_namespaces; i++) + if (sax_callback_failed(This, hr)) { - if (This->vbInterface) - hr = IVBSAXContentHandler_startPrefixMapping( - This->saxreader->vbcontentHandler, - &element->ns[i].prefix, - &element->ns[i].uri); - else - hr = ISAXContentHandler_startPrefixMapping( - This->saxreader->contentHandler, - element->ns[i].prefix, - SysStringLen(element->ns[i].prefix), - element->ns[i].uri, - SysStringLen(element->ns[i].uri)); - - if (sax_callback_failed(This, hr)) - { - format_error_message_from_id(This, hr); - return; - } + format_error_message_from_id(This, hr); + return; } } + } - uri = find_element_uri(This, URI); + uri = find_element_uri(This, URI); + hr = SAXAttributes_populate(This, nb_namespaces, namespaces, nb_attributes, attributes); + if (hr == S_OK && has_content_handler(This)) + { + BSTR local; - hr = SAXAttributes_populate(This, nb_namespaces, namespaces, nb_attributes, attributes); - if (hr == S_OK) - { - BSTR local; + if (is_namespaces_enabled(This->saxreader)) + local = element->local; + else + uri = local = NULL; - if (is_namespaces_enabled(This->saxreader)) - local = element->local; - else - uri = local = NULL; + if (This->vbInterface) + hr = IVBSAXContentHandler_startElement(This->saxreader->vbcontentHandler, + &uri, &local, &element->qname, &This->IVBSAXAttributes_iface); + else + hr = ISAXContentHandler_startElement(This->saxreader->contentHandler, + uri, SysStringLen(uri), + local, SysStringLen(local), + element->qname, SysStringLen(element->qname), + &This->ISAXAttributes_iface); - if (This->vbInterface) - hr = IVBSAXContentHandler_startElement(This->saxreader->vbcontentHandler, - &uri, &local, &element->qname, &This->IVBSAXAttributes_iface); - else - hr = ISAXContentHandler_startElement(This->saxreader->contentHandler, - uri, SysStringLen(uri), - local, SysStringLen(local), - element->qname, SysStringLen(element->qname), - &This->ISAXAttributes_iface); - } + if (sax_callback_failed(This, hr)) + format_error_message_from_id(This, hr); } - - if (sax_callback_failed(This, hr)) - format_error_message_from_id(This, hr); } static void libxmlEndElementNS( @@ -1435,7 +1430,7 @@ static void libxmlEndElementNS( if (is_namespaces_enabled(This->saxreader)) { int i = -1; - while (iterate_endprefix_index(This, element, &i)) + while (iterate_endprefix_index(This, element, &i) && has_content_handler(This)) { if (This->vbInterface) hr = IVBSAXContentHandler_endPrefixMapping( @@ -1447,10 +1442,10 @@ static void libxmlEndElementNS( if (sax_callback_failed(This, hr)) break; } - } - if (sax_callback_failed(This, hr)) - format_error_message_from_id(This, hr); + if (sax_callback_failed(This, hr)) + format_error_message_from_id(This, hr); + } free_element_entry(element); } @@ -1587,6 +1582,7 @@ static void libxmlComment(void *ctx, const xmlChar *value) This->line--; p--; } + This->column = 0; for(; p>=This->pParserCtxt->input->base && *p!='\n' && *p!='\r'; p--) This->column++;
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Alexandre Julliard