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Support content_exec for content_html 

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
This commit is contained in:
Daniel Silverstone 2019-05-05 15:38:20 +01:00
parent 1146f8bf49
commit 3021142aad
1 changed files with 85 additions and 0 deletions
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85
content/handlers/html/html.c
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@ -2504,6 +2504,90 @@ bool html_get_id_offset(hlcache_handle *h, lwc_string *frag_id, int *x, int *y)
return false;
}
static bool html_exec(struct content *c, const char *src, size_t srclen)
{
html_content *htmlc = (html_content *)c;
bool result = false;
dom_exception err;
dom_html_body_element *body_node;
dom_string *dom_src;
dom_text *text_node;
dom_node *spare_node;
dom_html_script_element *script_node;
if (htmlc->document == NULL) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, no document");
goto out_no_string;
}
err = dom_string_create((const uint8_t *)src, srclen, &dom_src);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, could not create string");
goto out_no_string;
}
err = dom_html_document_get_body(htmlc->document, &body_node);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to retrieve body element");
goto out_no_body;
}
err = dom_document_create_text_node(htmlc->document, dom_src, &text_node);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, could not create text node");
goto out_no_text_node;
}
err = dom_document_create_element(htmlc->document, corestring_dom_SCRIPT, &script_node);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, could not create script node");
goto out_no_script_node;
}
err = dom_node_append_child(script_node, text_node, &spare_node);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, could not insert code node into script node");
goto out_unparented;
}
dom_node_unref(spare_node); /* We do not need the spare ref at all */
err = dom_node_append_child(body_node, script_node, &spare_node);
if (err != DOM_NO_ERR) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, could not insert script node into document body");
goto out_unparented;
}
dom_node_unref(spare_node); /* Again no need for the spare ref */
/* We successfully inserted the node into the DOM */
result = true;
/* Now we unwind, starting by removing the script from wherever it
* ended up parented
*/
err = dom_node_get_parent_node(script_node, &spare_node);
if (err == DOM_NO_ERR && spare_node != NULL) {
dom_node *second_spare;
err = dom_node_remove_child(spare_node, script_node, &second_spare);
if (err == DOM_NO_ERR) {
dom_node_unref(second_spare);
}
dom_node_unref(spare_node);
}
out_unparented:
dom_node_unref(script_node);
out_no_script_node:
dom_node_unref(text_node);
out_no_text_node:
dom_node_unref(body_node);
out_no_body:
dom_string_unref(dom_src);
out_no_string:
return result;
}
/**
* Compute the type of a content
*
@ -2546,6 +2630,7 @@ static const content_handler html_content_handler = {
.clone = html_clone,
.get_encoding = html_encoding,
.type = html_content_type,
.exec = html_exec,
.no_share = true,
};