diff options
Diffstat (limited to 'content/handlers/html/html.c')
| -rw-r--r-- | content/handlers/html/html.c | 1112 |
1 files changed, 381 insertions, 731 deletions
diff --git a/content/handlers/html/html.c b/content/handlers/html/html.c index 25633a875..82f5f1388 100644 --- a/content/handlers/html/html.c +++ b/content/handlers/html/html.c @@ -44,9 +44,12 @@ #include "netsurf/content.h" #include "netsurf/browser_window.h" #include "netsurf/utf8.h" +#include "netsurf/keypress.h" #include "netsurf/layout.h" #include "netsurf/misc.h" #include "content/hlcache.h" +#include "content/content_factory.h" +#include "content/textsearch.h" #include "desktop/selection.h" #include "desktop/scrollbar.h" #include "desktop/textarea.h" @@ -55,14 +58,19 @@ #include "desktop/gui_internal.h" #include "html/html.h" +#include "html/private.h" +#include "html/dom_event.h" +#include "html/css.h" +#include "html/object.h" #include "html/html_save.h" -#include "html/html_internal.h" #include "html/interaction.h" #include "html/box.h" +#include "html/box_construct.h" +#include "html/box_inspect.h" #include "html/form_internal.h" #include "html/imagemap.h" #include "html/layout.h" -#include "html/search.h" +#include "html/textselection.h" #define CHUNK 4096 @@ -77,9 +85,31 @@ static const char *html_types[] = { "text/html" }; +/** + * Fire an event at the DOM + * + * Helper that swallows DOM errors. + * + * \param[in] event the event to fire at the DOM + * \param[in] target the event target + * \return true on success + */ +static bool fire_dom_event(dom_event *event, dom_node *target) +{ + dom_exception exc; + bool result; + + exc = dom_event_target_dispatch_event(target, event, &result); + if (exc != DOM_NO_ERR) { + return false; + } + + return result; +} + /* Exported interface, see html_internal.h */ -bool fire_dom_event(dom_string *type, dom_node *target, - bool bubbles, bool cancelable) +bool fire_generic_dom_event(dom_string *type, dom_node *target, + bool bubbles, bool cancelable) { dom_exception exc; dom_event *evt; @@ -93,11 +123,86 @@ bool fire_dom_event(dom_string *type, dom_node *target, return false; } NSLOG(netsurf, INFO, "Dispatching '%*s' against %p", - dom_string_length(type), dom_string_data(type), target); - exc = dom_event_target_dispatch_event(target, evt, &result); + (int)dom_string_length(type), dom_string_data(type), target); + result = fire_dom_event(evt, target); + dom_event_unref(evt); + return result; +} + +/* Exported interface, see html_internal.h */ +bool fire_dom_keyboard_event(dom_string *type, dom_node *target, + bool bubbles, bool cancelable, uint32_t key) +{ + bool is_special = key <= 0x001F || (0x007F <= key && key <= 0x009F); + dom_string *dom_key = NULL; + dom_keyboard_event *evt; + dom_exception exc; + bool result; + + if (is_special) { + switch (key) { + case NS_KEY_ESCAPE: + dom_key = dom_string_ref(corestring_dom_Escape); + break; + case NS_KEY_LEFT: + dom_key = dom_string_ref(corestring_dom_ArrowLeft); + break; + case NS_KEY_RIGHT: + dom_key = dom_string_ref(corestring_dom_ArrowRight); + break; + case NS_KEY_UP: + dom_key = dom_string_ref(corestring_dom_ArrowUp); + break; + case NS_KEY_DOWN: + dom_key = dom_string_ref(corestring_dom_ArrowDown); + break; + case NS_KEY_PAGE_UP: + dom_key = dom_string_ref(corestring_dom_PageUp); + break; + case NS_KEY_PAGE_DOWN: + dom_key = dom_string_ref(corestring_dom_PageDown); + break; + case NS_KEY_TEXT_START: + dom_key = dom_string_ref(corestring_dom_Home); + break; + case NS_KEY_TEXT_END: + dom_key = dom_string_ref(corestring_dom_End); + break; + default: + dom_key = NULL; + break; + } + } else { + char utf8[6]; + size_t length = utf8_from_ucs4(key, utf8); + utf8[length] = '\0'; + + exc = dom_string_create((const uint8_t *)utf8, strlen(utf8), + &dom_key); + if (exc != DOM_NO_ERR) { + return exc; + } + } + + exc = dom_keyboard_event_create(&evt); if (exc != DOM_NO_ERR) { - result = false; + dom_string_unref(dom_key); + return false; } + + exc = dom_keyboard_event_init(evt, type, bubbles, cancelable, NULL, + dom_key, NULL, DOM_KEY_LOCATION_STANDARD, false, + false, false, false, false, false); + dom_string_unref(dom_key); + if (exc != DOM_NO_ERR) { + dom_event_unref(evt); + return false; + } + + NSLOG(netsurf, INFO, "Dispatching '%*s' against %p", + (int)dom_string_length(type), dom_string_data(type), target); + + result = fire_dom_event((dom_event *) evt, target); dom_event_unref(evt); return result; } @@ -114,7 +219,7 @@ static void html_box_convert_done(html_content *c, bool success) dom_exception exc; /* returned by libdom functions */ dom_node *html; - NSLOG(netsurf, INFO, "Done XML to box (%p)", c); + NSLOG(netsurf, INFO, "DOM to box conversion complete (content %p)", c); c->box_conversion_context = NULL; @@ -170,411 +275,39 @@ static void html_box_convert_done(html_content *c, bool success) content_set_ready(&c->base); - if (c->base.active == 0) { - content_set_done(&c->base); - } + html_proceed_to_done(c); dom_node_unref(html); } - -/** process link node */ -static bool html_process_link(html_content *c, dom_node *node) -{ - struct content_rfc5988_link link; /* the link added to the content */ - dom_exception exc; /* returned by libdom functions */ - dom_string *atr_string; - nserror error; - - memset(&link, 0, sizeof(struct content_rfc5988_link)); - - /* check that the relation exists - w3c spec says must be present */ - exc = dom_element_get_attribute(node, corestring_dom_rel, &atr_string); - if ((exc != DOM_NO_ERR) || (atr_string == NULL)) { - return false; - } - /* get a lwc string containing the link relation */ - exc = dom_string_intern(atr_string, &link.rel); - dom_string_unref(atr_string); - if (exc != DOM_NO_ERR) { - return false; - } - - /* check that the href exists - w3c spec says must be present */ - exc = dom_element_get_attribute(node, corestring_dom_href, &atr_string); - if ((exc != DOM_NO_ERR) || (atr_string == NULL)) { - lwc_string_unref(link.rel); - return false; - } - - /* get nsurl */ - error = nsurl_join(c->base_url, dom_string_data(atr_string), - &link.href); - dom_string_unref(atr_string); - if (error != NSERROR_OK) { - lwc_string_unref(link.rel); - return false; - } - - /* look for optional properties -- we don't care if internment fails */ - - exc = dom_element_get_attribute(node, - corestring_dom_hreflang, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - /* get a lwc string containing the href lang */ - exc = dom_string_intern(atr_string, &link.hreflang); - dom_string_unref(atr_string); - } - - exc = dom_element_get_attribute(node, - corestring_dom_type, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - /* get a lwc string containing the type */ - exc = dom_string_intern(atr_string, &link.type); - dom_string_unref(atr_string); - } - - exc = dom_element_get_attribute(node, - corestring_dom_media, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - /* get a lwc string containing the media */ - exc = dom_string_intern(atr_string, &link.media); - dom_string_unref(atr_string); - } - - exc = dom_element_get_attribute(node, - corestring_dom_sizes, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - /* get a lwc string containing the sizes */ - exc = dom_string_intern(atr_string, &link.sizes); - dom_string_unref(atr_string); - } - - /* add to content */ - content__add_rfc5988_link(&c->base, &link); - - if (link.sizes != NULL) - lwc_string_unref(link.sizes); - if (link.media != NULL) - lwc_string_unref(link.media); - if (link.type != NULL) - lwc_string_unref(link.type); - if (link.hreflang != NULL) - lwc_string_unref(link.hreflang); - - nsurl_unref(link.href); - lwc_string_unref(link.rel); - - return true; -} - -/** process title node */ -static bool html_process_title(html_content *c, dom_node *node) -{ - dom_exception exc; /* returned by libdom functions */ - dom_string *title; - char *title_str; - bool success; - - exc = dom_node_get_text_content(node, &title); - if ((exc != DOM_NO_ERR) || (title == NULL)) { - return false; - } - - title_str = squash_whitespace(dom_string_data(title)); - dom_string_unref(title); - - if (title_str == NULL) { - return false; - } - - success = content__set_title(&c->base, title_str); - - free(title_str); - - return success; -} - -static bool html_process_base(html_content *c, dom_node *node) -{ - dom_exception exc; /* returned by libdom functions */ - dom_string *atr_string; - - /* get href attribute if present */ - exc = dom_element_get_attribute(node, - corestring_dom_href, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - nsurl *url; - nserror error; - - /* get url from string */ - error = nsurl_create(dom_string_data(atr_string), &url); - dom_string_unref(atr_string); - if (error == NSERROR_OK) { - if (c->base_url != NULL) - nsurl_unref(c->base_url); - c->base_url = url; - } - } - - - /* get target attribute if present and not already set */ - if (c->base_target != NULL) { - return true; - } - - exc = dom_element_get_attribute(node, - corestring_dom_target, &atr_string); - if ((exc == DOM_NO_ERR) && (atr_string != NULL)) { - /* Validation rules from the HTML5 spec for the base element: - * The target must be one of _blank, _self, _parent, or - * _top or any identifier which does not begin with an - * underscore - */ - if (*dom_string_data(atr_string) != '_' || - dom_string_caseless_lwc_isequal(atr_string, - corestring_lwc__blank) || - dom_string_caseless_lwc_isequal(atr_string, - corestring_lwc__self) || - dom_string_caseless_lwc_isequal(atr_string, - corestring_lwc__parent) || - dom_string_caseless_lwc_isequal(atr_string, - corestring_lwc__top)) { - c->base_target = strdup(dom_string_data(atr_string)); - } - dom_string_unref(atr_string); - } - - return true; -} - -static nserror html_meta_refresh_process_element(html_content *c, dom_node *n) +/* Documented in html_internal.h */ +nserror +html_proceed_to_done(html_content *html) { - union content_msg_data msg_data; - const char *url, *end, *refresh = NULL; - char *new_url; - char quote = '\0'; - dom_string *equiv, *content; - dom_exception exc; - nsurl *nsurl; - nserror error = NSERROR_OK; - - exc = dom_element_get_attribute(n, corestring_dom_http_equiv, &equiv); - if (exc != DOM_NO_ERR) { - return NSERROR_DOM; - } - - if (equiv == NULL) { - return NSERROR_OK; - } - - if (!dom_string_caseless_lwc_isequal(equiv, corestring_lwc_refresh)) { - dom_string_unref(equiv); - return NSERROR_OK; - } - - dom_string_unref(equiv); - - exc = dom_element_get_attribute(n, corestring_dom_content, &content); - if (exc != DOM_NO_ERR) { - return NSERROR_DOM; - } - - if (content == NULL) { - return NSERROR_OK; - } - - end = dom_string_data(content) + dom_string_byte_length(content); - - /* content := *LWS intpart fracpart? *LWS [';' *LWS *1url *LWS] - * intpart := 1*DIGIT - * fracpart := 1*('.' | DIGIT) - * url := "url" *LWS '=' *LWS (url-nq | url-sq | url-dq) - * url-nq := *urlchar - * url-sq := "'" *(urlchar | '"') "'" - * url-dq := '"' *(urlchar | "'") '"' - * urlchar := [#x9#x21#x23-#x26#x28-#x7E] | nonascii - * nonascii := [#x80-#xD7FF#xE000-#xFFFD#x10000-#x10FFFF] - */ - - url = dom_string_data(content); - - /* *LWS */ - while (url < end && ascii_is_space(*url)) { - url++; - } - - /* intpart */ - if (url == end || (*url < '0' || '9' < *url)) { - /* Empty content, or invalid timeval */ - dom_string_unref(content); - return NSERROR_OK; - } - - msg_data.delay = (int) strtol(url, &new_url, 10); - /* a very small delay and self-referencing URL can cause a loop - * that grinds machines to a halt. To prevent this we set a - * minimum refresh delay of 1s. */ - if (msg_data.delay < 1) { - msg_data.delay = 1; - } - - url = new_url; - - /* fracpart? (ignored, as delay is integer only) */ - while (url < end && (('0' <= *url && *url <= '9') || - *url == '.')) { - url++; - } - - /* *LWS */ - while (url < end && ascii_is_space(*url)) { - url++; - } - - /* ';' */ - if (url < end && *url == ';') - url++; - - /* *LWS */ - while (url < end && ascii_is_space(*url)) { - url++; - } - - if (url == end) { - /* Just delay specified, so refresh current page */ - dom_string_unref(content); - - c->base.refresh = nsurl_ref( - content_get_url(&c->base)); - - content_broadcast(&c->base, CONTENT_MSG_REFRESH, &msg_data); - - return NSERROR_OK; - } - - /* "url" */ - if (url <= end - 3) { - if (strncasecmp(url, "url", 3) == 0) { - url += 3; - } else { - /* Unexpected input, ignore this header */ - dom_string_unref(content); - return NSERROR_OK; - } - } else { - /* Insufficient input, ignore this header */ - dom_string_unref(content); - return NSERROR_OK; - } - - /* *LWS */ - while (url < end && ascii_is_space(*url)) { - url++; - } - - /* '=' */ - if (url < end) { - if (*url == '=') { - url++; - } else { - /* Unexpected input, ignore this header */ - dom_string_unref(content); + switch (content__get_status(&html->base)) { + case CONTENT_STATUS_READY: + if (html->base.active == 0) { + content_set_done(&html->base); return NSERROR_OK; } - } else { - /* Insufficient input, ignore this header */ - dom_string_unref(content); + break; + case CONTENT_STATUS_DONE: + /* fallthrough */ + case CONTENT_STATUS_LOADING: return NSERROR_OK; + default: + NSLOG(netsurf, ERROR, "Content status unexpectedly not LOADING/READY/DONE"); + break; } - - /* *LWS */ - while (url < end && ascii_is_space(*url)) { - url++; - } - - /* '"' or "'" */ - if (url < end && (*url == '"' || *url == '\'')) { - quote = *url; - url++; - } - - /* Start of URL */ - refresh = url; - - if (quote != 0) { - /* url-sq | url-dq */ - while (url < end && *url != quote) - url++; - } else { - /* url-nq */ - while (url < end && !ascii_is_space(*url)) - url++; - } - - /* '"' or "'" or *LWS (we don't care) */ - if (url > refresh) { - /* There's a URL */ - new_url = strndup(refresh, url - refresh); - if (new_url == NULL) { - dom_string_unref(content); - return NSERROR_NOMEM; - } - - error = nsurl_join(c->base_url, new_url, &nsurl); - if (error == NSERROR_OK) { - /* broadcast valid refresh url */ - - c->base.refresh = nsurl; - - content_broadcast(&c->base, CONTENT_MSG_REFRESH, - &msg_data); - c->refresh = true; - } - - free(new_url); - - } - - dom_string_unref(content); - - return error; + return NSERROR_UNKNOWN; } -static bool html_process_img(html_content *c, dom_node *node) -{ - dom_string *src; - nsurl *url; - nserror err; - dom_exception exc; - bool success; - - /* Do nothing if foreground images are disabled */ - if (nsoption_bool(foreground_images) == false) { - return true; - } - - exc = dom_element_get_attribute(node, corestring_dom_src, &src); - if (exc != DOM_NO_ERR || src == NULL) { - return true; - } - - err = nsurl_join(c->base_url, dom_string_data(src), &url); - if (err != NSERROR_OK) { - dom_string_unref(src); - return false; - } - dom_string_unref(src); - - /* Speculatively fetch the image */ - success = html_fetch_object(c, url, NULL, CONTENT_IMAGE, 0, 0, false); - nsurl_unref(url); - - return success; -} static void html_get_dimensions(html_content *htmlc) { + css_fixed device_dpi = nscss_screen_dpi; + unsigned f_size; + unsigned f_min; unsigned w; unsigned h; union content_msg_data msg_data = { @@ -586,13 +319,22 @@ static void html_get_dimensions(html_content *htmlc) content_broadcast(&htmlc->base, CONTENT_MSG_GETDIMS, &msg_data); - htmlc->media.width = nscss_pixels_physical_to_css(INTTOFIX(w)); - htmlc->media.height = nscss_pixels_physical_to_css(INTTOFIX(h)); - htmlc->media.client_font_size = - FDIV(INTTOFIX(nsoption_int(font_size)), F_10); - htmlc->media.client_line_height = - FMUL(nscss_len2px(NULL, htmlc->media.client_font_size, - CSS_UNIT_PT, NULL), FLTTOFIX(1.33)); + + w = css_unit_device2css_px(INTTOFIX(w), device_dpi); + h = css_unit_device2css_px(INTTOFIX(h), device_dpi); + + htmlc->media.width = w; + htmlc->media.height = h; + htmlc->unit_len_ctx.viewport_width = w; + htmlc->unit_len_ctx.viewport_height = h; + htmlc->unit_len_ctx.device_dpi = device_dpi; + + /** \todo Change nsoption font sizes to px. */ + f_size = FDIV(FMUL(F_96, FDIV(INTTOFIX(nsoption_int(font_size)), F_10)), F_72); + f_min = FDIV(FMUL(F_96, FDIV(INTTOFIX(nsoption_int(font_min_size)), F_10)), F_72); + + htmlc->unit_len_ctx.font_size_default = f_size; + htmlc->unit_len_ctx.font_size_minimum = f_min; } /* exported function documented in html/html_internal.h */ @@ -639,8 +381,8 @@ void html_finish_conversion(html_content *htmlc) * object, but with its target set to the Document object (and * the currentTarget set to the Window object) */ - if (htmlc->jscontext != NULL) { - js_fire_event(htmlc->jscontext, "load", htmlc->document, NULL); + if (htmlc->jsthread != NULL) { + js_fire_event(htmlc->jsthread, "load", htmlc->document, NULL); } /* convert dom tree to box tree */ @@ -672,268 +414,6 @@ void html_finish_conversion(html_content *htmlc) dom_node_unref(html); } -/* handler for a SCRIPT which has been added to a tree */ -static void -dom_SCRIPT_showed_up(html_content *htmlc, dom_html_script_element *script) -{ - dom_exception exc; - dom_html_script_element_flags flags; - dom_hubbub_error res; - bool within; - - if (!htmlc->enable_scripting) { - NSLOG(netsurf, INFO, "Encountered a script, but scripting is off, ignoring"); - return; - } - - NSLOG(netsurf, DEEPDEBUG, "Encountered a script, node %p showed up", script); - - exc = dom_html_script_element_get_flags(script, &flags); - if (exc != DOM_NO_ERR) { - NSLOG(netsurf, DEEPDEBUG, "Unable to retrieve flags, giving up"); - return; - } - - if (flags & DOM_HTML_SCRIPT_ELEMENT_FLAG_PARSER_INSERTED) { - NSLOG(netsurf, DEBUG, "Script was parser inserted, skipping"); - return; - } - - exc = dom_node_contains(htmlc->document, script, &within); - if (exc != DOM_NO_ERR) { - NSLOG(netsurf, DEBUG, "Unable to determine if script was within document, ignoring"); - return; - } - - if (!within) { - NSLOG(netsurf, DEBUG, "Script was not within the document, ignoring for now"); - return; - } - - res = html_process_script(htmlc, (dom_node *) script); - if (res == DOM_HUBBUB_OK) { - NSLOG(netsurf, DEEPDEBUG, "Inserted script has finished running"); - } else { - if (res == (DOM_HUBBUB_HUBBUB_ERR | HUBBUB_PAUSED)) { - NSLOG(netsurf, DEEPDEBUG, "Inserted script has launced asynchronously"); - } else { - NSLOG(netsurf, DEEPDEBUG, "Failure starting script"); - } - } -} - -/* callback for DOMNodeInserted end type */ -static void -dom_default_action_DOMNodeInserted_cb(struct dom_event *evt, void *pw) -{ - dom_event_target *node; - dom_node_type type; - dom_exception exc; - html_content *htmlc = pw; - - exc = dom_event_get_target(evt, &node); - if ((exc == DOM_NO_ERR) && (node != NULL)) { - exc = dom_node_get_node_type(node, &type); - if ((exc == DOM_NO_ERR) && (type == DOM_ELEMENT_NODE)) { - /* an element node has been inserted */ - dom_html_element_type tag_type; - - exc = dom_html_element_get_tag_type(node, &tag_type); - if (exc != DOM_NO_ERR) { - tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN; - } - - switch (tag_type) { - case DOM_HTML_ELEMENT_TYPE_LINK: - /* Handle stylesheet loading */ - html_css_process_link(htmlc, (dom_node *)node); - /* Generic link handling */ - html_process_link(htmlc, (dom_node *)node); - break; - case DOM_HTML_ELEMENT_TYPE_META: - if (htmlc->refresh) - break; - html_meta_refresh_process_element(htmlc, - (dom_node *)node); - break; - case DOM_HTML_ELEMENT_TYPE_TITLE: - if (htmlc->title != NULL) - break; - htmlc->title = dom_node_ref(node); - break; - case DOM_HTML_ELEMENT_TYPE_BASE: - html_process_base(htmlc, (dom_node *)node); - break; - case DOM_HTML_ELEMENT_TYPE_IMG: - html_process_img(htmlc, (dom_node *) node); - break; - case DOM_HTML_ELEMENT_TYPE_STYLE: - html_css_process_style(htmlc, (dom_node *) node); - break; - case DOM_HTML_ELEMENT_TYPE_SCRIPT: - dom_SCRIPT_showed_up(htmlc, (dom_html_script_element *) node); - break; - default: - break; - } - if (htmlc->enable_scripting) { - /* ensure javascript context is available */ - if (htmlc->jscontext == NULL) { - union content_msg_data msg_data; - - msg_data.jscontext = &htmlc->jscontext; - content_broadcast(&htmlc->base, - CONTENT_MSG_GETCTX, - &msg_data); - NSLOG(netsurf, INFO, - "javascript context: %p (htmlc: %p)", - htmlc->jscontext, - htmlc); - } - if (htmlc->jscontext != NULL) { - js_handle_new_element(htmlc->jscontext, - (dom_element *) node); - } - } - } - dom_node_unref(node); - } -} - -/* callback for DOMNodeInsertedIntoDocument end type */ -static void -dom_default_action_DOMNodeInsertedIntoDocument_cb(struct dom_event *evt, void *pw) -{ - html_content *htmlc = pw; - dom_event_target *node; - dom_node_type type; - dom_exception exc; - - exc = dom_event_get_target(evt, &node); - if ((exc == DOM_NO_ERR) && (node != NULL)) { - exc = dom_node_get_node_type(node, &type); - if ((exc == DOM_NO_ERR) && (type == DOM_ELEMENT_NODE)) { - /* an element node has been modified */ - dom_html_element_type tag_type; - - exc = dom_html_element_get_tag_type(node, &tag_type); - if (exc != DOM_NO_ERR) { - tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN; - } - - switch (tag_type) { - case DOM_HTML_ELEMENT_TYPE_SCRIPT: - dom_SCRIPT_showed_up(htmlc, (dom_html_script_element *) node); - default: - break; - } - } - dom_node_unref(node); - } -} - -/* Deal with input elements being modified by resyncing their gadget - * if they have one. - */ -static void html_texty_element_update(html_content *htmlc, dom_node *node) -{ - struct box *box = box_for_node(node); - if (box == NULL) { - return; /* No Box (yet?) so no gadget to update */ - } - if (box->gadget == NULL) { - return; /* No gadget yet (under construction perhaps?) */ - } - form_gadget_sync_with_dom(box->gadget); - /* And schedule a redraw for the box */ - html__redraw_a_box(htmlc, box); -} - -/* callback for DOMSubtreeModified end type */ -static void -dom_default_action_DOMSubtreeModified_cb(struct dom_event *evt, void *pw) -{ - dom_event_target *node; - dom_node_type type; - dom_exception exc; - html_content *htmlc = pw; - - exc = dom_event_get_target(evt, &node); - if ((exc == DOM_NO_ERR) && (node != NULL)) { - if (htmlc->title == (dom_node *)node) { - /* Node is our title node */ - html_process_title(htmlc, (dom_node *)node); - dom_node_unref(node); - return; - } - - exc = dom_node_get_node_type(node, &type); - if ((exc == DOM_NO_ERR) && (type == DOM_ELEMENT_NODE)) { - /* an element node has been modified */ - dom_html_element_type tag_type; - - exc = dom_html_element_get_tag_type(node, &tag_type); - if (exc != DOM_NO_ERR) { - tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN; - } - - switch (tag_type) { - case DOM_HTML_ELEMENT_TYPE_STYLE: - html_css_update_style(htmlc, (dom_node *)node); - break; - case DOM_HTML_ELEMENT_TYPE_TEXTAREA: - case DOM_HTML_ELEMENT_TYPE_INPUT: - html_texty_element_update(htmlc, (dom_node *)node); - default: - break; - } - } - dom_node_unref(node); - } -} - -static void -dom_default_action_finished_cb(struct dom_event *evt, void *pw) -{ - html_content *htmlc = pw; - - if (htmlc->jscontext != NULL) - js_event_cleanup(htmlc->jscontext, evt); -} - -/* callback function selector - * - * selects a callback function for libdom to call based on the type and phase. - * dom_default_action_phase from events/document_event.h - * - * The principle events are: - * DOMSubtreeModified - * DOMAttrModified - * DOMNodeInserted - * DOMNodeInsertedIntoDocument - * - * @return callback function pointer or NULL for none - */ -static dom_default_action_callback -dom_event_fetcher(dom_string *type, - dom_default_action_phase phase, - void **pw) -{ - NSLOG(netsurf, DEEPDEBUG, "phase:%d type:%s", phase, dom_string_data(type)); - - if (phase == DOM_DEFAULT_ACTION_END) { - if (dom_string_isequal(type, corestring_dom_DOMNodeInserted)) { - return dom_default_action_DOMNodeInserted_cb; - } else if (dom_string_isequal(type, corestring_dom_DOMNodeInsertedIntoDocument)) { - return dom_default_action_DOMNodeInsertedIntoDocument_cb; - } else if (dom_string_isequal(type, corestring_dom_DOMSubtreeModified)) { - return dom_default_action_DOMSubtreeModified_cb; - } - } else if (phase == DOM_DEFAULT_ACTION_FINISHED) { - return dom_default_action_finished_cb; - } - return NULL; -} static void html_document_user_data_handler(dom_node_operation operation, @@ -978,6 +458,8 @@ html_create_html_data(html_content *c, const http_parameter *params) dom_hubbub_error error; dom_exception err; void *old_node_data; + const char *prefer_color_mode = (nsoption_bool(prefer_dark_mode)) ? + "dark" : "light"; c->parser = NULL; c->parse_completed = false; @@ -1014,11 +496,9 @@ html_create_html_data(html_content *c, const http_parameter *params) c->selection_owner.none = true; c->focus_type = HTML_FOCUS_SELF; c->focus_owner.self = true; - c->search = NULL; - c->search_string = NULL; c->scripts_count = 0; c->scripts = NULL; - c->jscontext = NULL; + c->jsthread = NULL; c->enable_scripting = nsoption_bool(enable_javascript); c->base.active = 1; /* The html content itself is active */ @@ -1027,7 +507,14 @@ html_create_html_data(html_content *c, const http_parameter *params) return NSERROR_NOMEM; } - selection_prepare(&c->sel, (struct content *)c, true); + if (lwc_intern_string(prefer_color_mode, strlen(prefer_color_mode), + &c->media.prefers_color_scheme) != lwc_error_ok) { + lwc_string_unref(c->universal); + c->universal = NULL; + return NSERROR_NOMEM; + } + + c->sel = selection_create((struct content *)c); nerror = http_parameter_list_find_item(params, corestring_lwc_charset, &charset); if (nerror == NSERROR_OK) { @@ -1038,6 +525,8 @@ html_create_html_data(html_content *c, const http_parameter *params) if (c->encoding == NULL) { lwc_string_unref(c->universal); c->universal = NULL; + lwc_string_unref(c->media.prefers_color_scheme); + c->media.prefers_color_scheme = NULL; return NSERROR_NOMEM; } @@ -1051,7 +540,7 @@ html_create_html_data(html_content *c, const http_parameter *params) parse_params.msg = NULL; parse_params.script = html_process_script; parse_params.ctx = c; - parse_params.daf = dom_event_fetcher; + parse_params.daf = html_dom_event_fetcher; error = dom_hubbub_parser_create(&parse_params, &c->parser, @@ -1074,6 +563,8 @@ html_create_html_data(html_content *c, const http_parameter *params) lwc_string_unref(c->universal); c->universal = NULL; + lwc_string_unref(c->media.prefers_color_scheme); + c->media.prefers_color_scheme = NULL; return libdom_hubbub_error_to_nserror(error); } @@ -1090,6 +581,8 @@ html_create_html_data(html_content *c, const http_parameter *params) lwc_string_unref(c->universal); c->universal = NULL; + lwc_string_unref(c->media.prefers_color_scheme); + c->media.prefers_color_scheme = NULL; NSLOG(netsurf, INFO, "Unable to set user data."); return NSERROR_DOM; @@ -1195,7 +688,7 @@ html_process_encoding_change(struct content *c, parse_params.msg = NULL; parse_params.script = html_process_script; parse_params.ctx = html; - parse_params.daf = dom_event_fetcher; + parse_params.daf = html_dom_event_fetcher; /* Create new binding, using the new encoding */ error = dom_hubbub_parser_create(&parse_params, @@ -1519,17 +1012,15 @@ static void html_stop(struct content *c) { html_content *htmlc = (html_content *) c; - /* invalidate the html content reference to the javascript context - * as it is about to become invalid and must not be used any - * more. - */ - html_script_invalidate_ctx(htmlc); - switch (c->status) { case CONTENT_STATUS_LOADING: /* Still loading; simply flag that we've been aborted * html_convert/html_finish_conversion will do the rest */ htmlc->aborted = true; + if (htmlc->jsthread != NULL) { + /* Close the JS thread to cancel out any callbacks */ + js_closethread(htmlc->jsthread); + } break; case CONTENT_STATUS_READY: @@ -1571,9 +1062,11 @@ static void html_reformat(struct content *c, int width, int height) htmlc->reflowing = true; - htmlc->len_ctx.vw = nscss_pixels_physical_to_css(INTTOFIX(width)); - htmlc->len_ctx.vh = nscss_pixels_physical_to_css(INTTOFIX(height)); - htmlc->len_ctx.root_style = htmlc->layout->style; + htmlc->unit_len_ctx.viewport_width = css_unit_device2css_px( + INTTOFIX(width), htmlc->unit_len_ctx.device_dpi); + htmlc->unit_len_ctx.viewport_height = css_unit_device2css_px( + INTTOFIX(height), htmlc->unit_len_ctx.device_dpi); + htmlc->unit_len_ctx.root_style = htmlc->layout->style; layout_document(htmlc, width, height); layout = htmlc->layout; @@ -1592,7 +1085,7 @@ static void html_reformat(struct content *c, int width, int height) if (c->height < layout->y + layout->descendant_y1) c->height = layout->y + layout->descendant_y1; - selection_reinit(&htmlc->sel, htmlc->layout); + selection_reinit(htmlc->sel); htmlc->reflowing = false; htmlc->had_initial_layout = true; @@ -1720,6 +1213,8 @@ static void html_destroy(struct content *c) } } + selection_destroy(html->sel); + /* Destroy forms */ for (f = html->forms; f != NULL; f = g) { g = f->prev; @@ -1735,6 +1230,14 @@ static void html_destroy(struct content *c) if (html->base_url) nsurl_unref(html->base_url); + /* At this point we can be moderately confident the JS is offline + * so we destroy the JS thread. + */ + if (html->jsthread != NULL) { + js_destroythread(html->jsthread); + html->jsthread = NULL; + } + if (html->parser != NULL) { dom_hubbub_parser_destroy(html->parser); html->parser = NULL; @@ -1786,6 +1289,11 @@ static void html_destroy(struct content *c) html->universal = NULL; } + if (html->media.prefers_color_scheme != NULL) { + lwc_string_unref(html->media.prefers_color_scheme); + html->media.prefers_color_scheme = NULL; + } + /* Free stylesheets */ html_css_free_stylesheets(html); @@ -1832,7 +1340,7 @@ html_open(struct content *c, html->drag_owner.no_owner = true; /* text selection */ - selection_init(&html->sel, html->layout, &html->len_ctx); + selection_init(html->sel); html->selection_type = HTML_SELECTION_NONE; html->selection_owner.none = true; @@ -1849,26 +1357,22 @@ html_open(struct content *c, static nserror html_close(struct content *c) { html_content *htmlc = (html_content *) c; + nserror ret = NSERROR_OK; - selection_clear(&htmlc->sel, false); - - if (htmlc->search != NULL) { - search_destroy_context(htmlc->search); - } + selection_clear(htmlc->sel, false); /* clear the html content reference to the browser window */ htmlc->bw = NULL; - /* invalidate the html content reference to the javascript context - * as it is about to become invalid and must not be used any - * more. - */ - html_script_invalidate_ctx(htmlc); - /* remove all object references from the html content */ html_object_close_objects(htmlc); - return NSERROR_OK; + if (htmlc->jsthread != NULL) { + /* Close, but do not destroy (yet) the JS thread */ + ret = js_closethread(htmlc->jsthread); + } + + return ret; } @@ -1891,7 +1395,7 @@ static void html_clear_selection(struct content *c) break; case HTML_SELECTION_SELF: assert(html->selection_owner.none == false); - selection_clear(&html->sel, true); + selection_clear(html->sel, true); break; case HTML_SELECTION_CONTENT: content_clear_selection(html->selection_owner.content->object); @@ -1920,7 +1424,7 @@ static char *html_get_selection(struct content *c) gadget->data.text.ta); case HTML_SELECTION_SELF: assert(html->selection_owner.none == false); - return selection_get_copy(&html->sel); + return selection_get_copy(html->sel); case HTML_SELECTION_CONTENT: return content_get_selection( html->selection_owner.content->object); @@ -1957,7 +1461,7 @@ html_get_contextual_content(struct content *c, int x, int y, struct box *next; int box_x = 0, box_y = 0; - while ((next = box_at_point(&html->len_ctx, box, x, y, + while ((next = box_at_point(&html->unit_len_ctx, box, x, y, &box_x, &box_y)) != NULL) { box = next; @@ -2038,7 +1542,7 @@ html_scroll_at_point(struct content *c, int x, int y, int scrx, int scry) /* TODO: invert order; visit deepest box first */ - while ((next = box_at_point(&html->len_ctx, box, x, y, + while ((next = box_at_point(&html->unit_len_ctx, box, x, y, &box_x, &box_y)) != NULL) { box = next; @@ -2187,7 +1691,7 @@ static bool html_drop_file_at_point(struct content *c, int x, int y, char *file) int box_x = 0, box_y = 0; /* Scan box tree for boxes that can handle drop */ - while ((next = box_at_point(&html->len_ctx, box, x, y, + while ((next = box_at_point(&html->unit_len_ctx, box, x, y, &box_x, &box_y)) != NULL) { box = next; @@ -2583,7 +2087,7 @@ 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) +bool html_exec(struct content *c, const char *src, size_t srclen) { html_content *htmlc = (html_content *)c; bool result = false; @@ -2610,41 +2114,41 @@ static bool html_exec(struct content *c, const char *src, size_t srclen) 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; @@ -2667,6 +2171,35 @@ out_no_string: return result; } +/* See \ref content_saw_insecure_objects */ +static bool +html_saw_insecure_objects(struct content *c) +{ + html_content *htmlc = (html_content *)c; + struct content_html_object *obj = htmlc->object_list; + + /* Check through the object list */ + while (obj != NULL) { + if (obj->content != NULL) { + if (content_saw_insecure_objects(obj->content)) + return true; + } + obj = obj->next; + } + + /* Now check the script list */ + if (html_saw_insecure_scripts(htmlc)) { + return true; + } + + /* Now check stylesheets */ + if (html_css_saw_insecure_stylesheets(htmlc)) { + return true; + } + + return false; +} + /** * Compute the type of a content * @@ -2683,6 +2216,133 @@ static void html_fini(void) html_css_fini(); } +/** + * Finds all occurrences of a given string in an html box + * + * \param pattern the string pattern to search for + * \param p_len pattern length + * \param cur pointer to the current box + * \param case_sens whether to perform a case sensitive search + * \param context The search context to add the entry to. + * \return true on success, false on memory allocation failure + */ +static nserror +find_occurrences_html_box(const char *pattern, + int p_len, + struct box *cur, + bool case_sens, + struct textsearch_context *context) +{ + struct box *a; + nserror res = NSERROR_OK; + + /* ignore this box, if there's no visible text */ + if (!cur->object && cur->text) { + const char *text = cur->text; + unsigned length = cur->length; + + while (length > 0) { + unsigned match_length; + unsigned match_offset; + const char *new_text; + const char *pos; + + pos = content_textsearch_find_pattern(text, + length, + pattern, + p_len, + case_sens, + &match_length); + if (!pos) + break; + + /* found string in box => add to list */ + match_offset = pos - cur->text; + + res = content_textsearch_add_match(context, + cur->byte_offset + match_offset, + cur->byte_offset + match_offset + match_length, + cur, + cur); + if (res != NSERROR_OK) { + return res; + } + + new_text = pos + match_length; + length -= (new_text - text); + text = new_text; + } + } + + /* and recurse */ + for (a = cur->children; a; a = a->next) { + res = find_occurrences_html_box(pattern, + p_len, + a, + case_sens, + context); + if (res != NSERROR_OK) { + return res; + } + } + + return res; +} + +/** + * Finds all occurrences of a given string in the html box tree + * + * \param pattern the string pattern to search for + * \param p_len pattern length + * \param c The content to search + * \param csens whether to perform a case sensitive search + * \param context The search context to add the entry to. + * \return true on success, false on memory allocation failure + */ +static nserror +html_textsearch_find(struct content *c, + struct textsearch_context *context, + const char *pattern, + int p_len, + bool csens) +{ + html_content *html = (html_content *)c; + + if (html->layout == NULL) { + return NSERROR_INVALID; + } + + return find_occurrences_html_box(pattern, + p_len, + html->layout, + csens, + context); +} + + +static nserror +html_textsearch_bounds(struct content *c, + unsigned start_idx, + unsigned end_idx, + struct box *start_box, + struct box *end_box, + struct rect *bounds) +{ + /* get box position and jump to it */ + box_coords(start_box, &bounds->x0, &bounds->y0); + /* \todo: move x0 in by correct idx */ + box_coords(end_box, &bounds->x1, &bounds->y1); + /* \todo: move x1 in by correct idx */ + bounds->x1 += end_box->width; + bounds->y1 += end_box->height; + + return NSERROR_OK; +} + + +/** + * HTML content handler function table + */ static const content_handler html_content_handler = { .fini = html_fini, .create = html_create, @@ -2702,17 +2362,23 @@ static const content_handler html_content_handler = { .get_contextual_content = html_get_contextual_content, .scroll_at_point = html_scroll_at_point, .drop_file_at_point = html_drop_file_at_point, - .search = html_search, - .search_clear = html_search_clear, .debug_dump = html_debug_dump, .debug = html_debug, .clone = html_clone, .get_encoding = html_encoding, .type = html_content_type, .exec = html_exec, + .saw_insecure_objects = html_saw_insecure_objects, + .textsearch_find = html_textsearch_find, + .textsearch_bounds = html_textsearch_bounds, + .textselection_redraw = html_textselection_redraw, + .textselection_copy = html_textselection_copy, + .textselection_get_end = html_textselection_get_end, .no_share = true, }; + +/* exported function documented in html/html.h */ nserror html_init(void) { uint32_t i; @@ -2736,19 +2402,3 @@ error: return error; } - -/** - * Get the browser window containing an HTML content - * - * \param c HTML content - * \return the browser window - */ -struct browser_window *html_get_browser_window(struct content *c) -{ - html_content *html = (html_content *) c; - - assert(c != NULL); - assert(c->handler == &html_content_handler); - - return html->bw; -} |