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Make the high-level cache drop contents of unacceptable type on the floor. 

svn path=/trunk/netsurf/; revision=10238
This commit is contained in:
John Mark Bell 2010-04-04 17:17:24 +00:00
parent 487d4c3ae3
commit 69f02e926f
7 changed files with 123 additions and 39 deletions
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78
content/hlcache.c
View File

@ -26,7 +26,9 @@
#include "content/content.h"
#include "content/hlcache.h"
#include "utils/http.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/url.h"
typedef struct hlcache_entry hlcache_entry;
@ -38,6 +40,8 @@ struct hlcache_retrieval_ctx {
hlcache_handle *handle; /**< High-level handle for object */
const content_type *accepted_types; /**< Accepted types, or NULL */
hlcache_child_context child; /**< Child context */
};
@ -62,6 +66,8 @@ static hlcache_entry *hlcache_content_list;
static nserror hlcache_llcache_callback(llcache_handle *handle,
const llcache_event *event, void *pw);
static bool hlcache_type_is_acceptable(llcache_handle *llcache,
const content_type *accepted_types);
static nserror hlcache_find_content(hlcache_retrieval_ctx *ctx);
static void hlcache_content_callback(struct content *c,
content_msg msg, union content_msg_data data, void *pw);
@ -74,7 +80,8 @@ static void hlcache_content_callback(struct content *c,
nserror hlcache_handle_retrieve(const char *url, uint32_t flags,
const char *referer, llcache_post_data *post,
hlcache_handle_callback cb, void *pw,
hlcache_child_context *child, hlcache_handle **result)
hlcache_child_context *child,
const content_type *accepted_types, hlcache_handle **result)
{
hlcache_retrieval_ctx *ctx;
nserror error;
@ -97,6 +104,8 @@ nserror hlcache_handle_retrieve(const char *url, uint32_t flags,
ctx->child.quirks = child->quirks;
}
ctx->accepted_types = accepted_types;
ctx->handle->cb = cb;
ctx->handle->pw = pw;
@ -218,9 +227,26 @@ nserror hlcache_llcache_callback(llcache_handle *handle,
switch (event->type) {
case LLCACHE_EVENT_HAD_HEADERS:
error = hlcache_find_content(ctx);
if (error != NSERROR_OK)
return error;
if (hlcache_type_is_acceptable(handle, ctx->accepted_types)) {
error = hlcache_find_content(ctx);
if (error != NSERROR_OK)
return error;
} else {
/* Unacceptable type: abort fetch and report error */
llcache_handle_abort(handle);
llcache_handle_release(handle);
if (ctx->handle->cb != NULL) {
hlcache_event hlevent;
hlevent.type = CONTENT_MSG_ERROR;
hlevent.data.error = messages_get("BadType");
ctx->handle->cb(ctx->handle, &hlevent,
ctx->handle->pw);
}
}
/* No longer require retrieval context */
free(ctx);
break;
@ -246,6 +272,50 @@ nserror hlcache_llcache_callback(llcache_handle *handle,
return NSERROR_OK;
}
/**
* Determine if the type of a low-level cache object is acceptable
*
* \param llcache Low-level cache object to consider
* \param accepted_types Array of acceptable types, or NULL for any
* \return True if the type is acceptable, false otherwise
*/
bool hlcache_type_is_acceptable(llcache_handle *llcache,
const content_type *accepted_types)
{
const char *content_type_header;
char *mime_type;
http_parameter *params;
content_type type;
nserror error;
if (accepted_types == NULL)
return true;
content_type_header =
llcache_handle_get_header(llcache, "Content-Type");
if (content_type_header == NULL)
content_type_header = "text/plain";
error = http_parse_content_type(content_type_header, &mime_type,
&params);
if (error != NSERROR_OK)
return false;
type = content_lookup(mime_type);
free(mime_type);
http_parameter_list_destroy(params);
while (*accepted_types != CONTENT_UNKNOWN) {
if (*accepted_types == type)
break;
accepted_types++;
}
return *accepted_types == type;
}
/**
* Find a content for the high-level cache handle
*

22
content/hlcache.h
View File

@ -56,20 +56,23 @@ typedef nserror (*hlcache_handle_callback)(hlcache_handle *handle,
/**
* Retrieve a high-level cache handle for an object
*
* \param url URL of the object to retrieve handle for
* \param flags Object retrieval flags
* \param referer Referring URL, or NULL if none
* \param post POST data, or NULL for a GET request
* \param cb Callback to handle object events
* \param pw Pointer to client-specific data for callback
* \param child Child retrieval context, or NULL for top-level content
* \param result Pointer to location to recieve cache handle
* \param url URL of the object to retrieve handle for
* \param flags Object retrieval flags
* \param referer Referring URL, or NULL if none
* \param post POST data, or NULL for a GET request
* \param cb Callback to handle object events
* \param pw Pointer to client-specific data for callback
* \param child Child retrieval context, or NULL for top-level content
* \param accepted_types Array of acceptable content types, or NULL for any
* \param result Pointer to location to recieve cache handle
* \return NSERROR_OK on success, appropriate error otherwise
*
* Child contents are keyed on the tuple < URL, quirks >.
* The quirks field is ignored for child contents whose behaviour is not
* affected by quirks mode.
*
* The \a accepted_types array must be terminated with CONTENT_UNKNOWN
*
* \todo The above rules should be encoded in the handler_map.
*
* \todo Is there any way to sensibly reduce the number of parameters here?
@ -77,7 +80,8 @@ typedef nserror (*hlcache_handle_callback)(hlcache_handle *handle,
nserror hlcache_handle_retrieve(const char *url, uint32_t flags,
const char *referer, llcache_post_data *post,
hlcache_handle_callback cb, void *pw,
hlcache_child_context *child, hlcache_handle **result);
hlcache_child_context *child,
const content_type *accepted_types, hlcache_handle **result);
/**
* Release a high-level cache handle

4
css/css.c
View File

@ -200,6 +200,7 @@ bool nscss_convert(struct content *c)
*/
css_error nscss_convert_css_data(struct content_css_data *c)
{
static const content_type accept[] = { CONTENT_CSS, CONTENT_UNKNOWN };
const char *referer;
uint32_t i = 0;
css_error error;
@ -252,7 +253,8 @@ css_error nscss_convert_css_data(struct content_css_data *c)
c->imports[c->import_count].media = media;
nerror = hlcache_handle_retrieve(lwc_string_data(uri),
0, referer, NULL, nscss_import, c,
&child, &c->imports[c->import_count++].c);
&child, accept,
&c->imports[c->import_count++].c);
if (error != NSERROR_OK) {
return CSS_NOMEM;
}

3
desktop/browser.c
View File

@ -409,7 +409,8 @@ void browser_window_go_post(struct browser_window *bw, const char *url,
error = hlcache_handle_retrieve(url2, 0, referer,
fetch_is_post ? &post : NULL,
browser_window_callback, bw,
parent != NULL ? &child : NULL, &c);
parent != NULL ? &child : NULL,
NULL, &c);
if (error == NSERROR_NO_FETCH_HANDLER) {
gui_launch_url(url2);
free(url2);

11
desktop/searchweb.c
View File

@ -206,6 +206,12 @@ char *search_web_get_url(const char *encsearchterm)
void search_web_retrieve_ico(bool localdefault)
{
static const content_type accept[] = {
#ifdef WITH_BMP
CONTENT_ICO,
#endif
CONTENT_UNKNOWN
};
char *url;
nserror error;
@ -230,7 +236,8 @@ void search_web_retrieve_ico(bool localdefault)
}
error = hlcache_handle_retrieve(url, 0, NULL, NULL,
search_web_ico_callback, NULL, NULL, &search_ico);
search_web_ico_callback, NULL, NULL, accept,
&search_ico);
if (error != NSERROR_OK)
search_ico = NULL;
@ -269,6 +276,8 @@ nserror search_web_ico_callback(hlcache_handle *ico,
} else
#endif
{
hlcache_handle_release(ico);
search_ico = NULL;
search_web_retrieve_ico(true);
}
break;

33
render/favicon.c
View File

@ -148,6 +148,18 @@ char *favicon_get_icon_ref(struct content *c, xmlNode *html)
bool favicon_get_icon(struct content *c, xmlNode *html)
{
static const content_type permitted_types[] = {
#ifdef WITH_BMP
CONTENT_ICO,
#endif
#if defined(WITH_MNG) || defined(WITH_PNG)
CONTENT_PNG,
#endif
#ifdef WITH_GIF
CONTENT_GIF,
#endif
CONTENT_UNKNOWN
};
char *url;
nserror error;
@ -157,7 +169,7 @@ bool favicon_get_icon(struct content *c, xmlNode *html)
error = hlcache_handle_retrieve(url, LLCACHE_RETRIEVE_NO_ERROR_PAGES,
content__get_url(c), NULL, favicon_callback, c, NULL,
&c->data.html.favicon);
permitted_types, &c->data.html.favicon);
free(url);
@ -171,29 +183,12 @@ bool favicon_get_icon(struct content *c, xmlNode *html)
nserror favicon_callback(hlcache_handle *icon,
const hlcache_event *event, void *pw)
{
static const content_type permitted_types[] = {
#ifdef WITH_BMP
CONTENT_ICO,
#endif
#if defined(WITH_MNG) || defined(WITH_PNG)
CONTENT_PNG,
#endif
#ifdef WITH_GIF
CONTENT_GIF,
#endif
CONTENT_UNKNOWN
};
struct content *c = pw;
const content_type *type;
switch (event->type) {
case CONTENT_MSG_LOADING:
/* check that the favicon is really a correct image type */
for (type = permitted_types; *type != CONTENT_UNKNOWN; type++)
if (content_get_type(icon) == *type)
break;
if (*type == CONTENT_UNKNOWN) {
if (content_get_type(icon) == CONTENT_UNKNOWN) {
union content_msg_data msg_data;
LOG(("%s is not a favicon", content_get_url(icon)));

11
render/html.c
View File

@ -783,6 +783,7 @@ bool html_meta_refresh(struct content *c, xmlNode *head)
bool html_find_stylesheets(struct content *c, xmlNode *html)
{
static const content_type accept[] = { CONTENT_CSS, CONTENT_UNKNOWN };
xmlNode *node;
char *rel, *type, *media, *href, *url, *url2;
unsigned int i = STYLESHEET_START;
@ -819,7 +820,7 @@ bool html_find_stylesheets(struct content *c, xmlNode *html)
ns_error = hlcache_handle_retrieve(default_stylesheet_url, 0,
content__get_url(c), NULL,
html_convert_css_callback, c, &child,
html_convert_css_callback, c, &child, accept,
&c->data.html.stylesheets[
STYLESHEET_BASE].data.external);
if (ns_error != NSERROR_OK)
@ -830,7 +831,7 @@ bool html_find_stylesheets(struct content *c, xmlNode *html)
if (c->data.html.quirks == BINDING_QUIRKS_MODE_FULL) {
ns_error = hlcache_handle_retrieve(quirks_stylesheet_url, 0,
content__get_url(c), NULL,
html_convert_css_callback, c, &child,
html_convert_css_callback, c, &child, accept,
&c->data.html.stylesheets[
STYLESHEET_QUIRKS].data.external);
if (ns_error != NSERROR_OK)
@ -842,7 +843,7 @@ bool html_find_stylesheets(struct content *c, xmlNode *html)
if (option_block_ads) {
ns_error = hlcache_handle_retrieve(adblock_stylesheet_url, 0,
content__get_url(c), NULL,
html_convert_css_callback, c, &child,
html_convert_css_callback, c, &child, accept,
&c->data.html.stylesheets[
STYLESHEET_ADBLOCK].data.external);
if (ns_error != NSERROR_OK)
@ -951,6 +952,7 @@ bool html_find_stylesheets(struct content *c, xmlNode *html)
ns_error = hlcache_handle_retrieve(url2, 0,
content__get_url(c), NULL,
html_convert_css_callback, c, &child,
accept,
&c->data.html.stylesheets[i].
data.external);
@ -1246,7 +1248,7 @@ bool html_fetch_object(struct content *c, const char *url, struct box *box,
}
error = hlcache_handle_retrieve(url2, 0, content__get_url(c), NULL,
html_object_callback, c, &child,
html_object_callback, c, &child, permitted_types,
&c_fetch);
/* No longer need normalized url */
@ -1313,6 +1315,7 @@ bool html_replace_object(struct content *c, unsigned int i, const char *url)
/* initialise fetch */
error = hlcache_handle_retrieve(url2, 0, content__get_url(c), NULL,
html_object_callback, c, &child,
c->data.html.object[i].permitted_types,
&c_fetch);
free(url2);