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authorVincent Sanders <vince@netsurf-browser.org>2018-05-10 11:34:26 +0100
committerVincent Sanders <vince@kyllikki.org>2018-05-10 13:37:02 +0100
commit2a03ea30490892ac52b3da325ab78e1aa888f83e (patch)
treed041e4a2aab3b224ad41612d47ea2119895e27ac /render/html_css_fetcher.c
parent1b892391d7859398c212b9fda5b532308fa6e8fd (diff)
downloadnetsurf-2a03ea30490892ac52b3da325ab78e1aa888f83e.tar.gz
netsurf-2a03ea30490892ac52b3da325ab78e1aa888f83e.tar.bz2
move html and text content handlers where they belong
Diffstat (limited to 'render/html_css_fetcher.c')
-rw-r--r--render/html_css_fetcher.c321
1 files changed, 0 insertions, 321 deletions
diff --git a/render/html_css_fetcher.c b/render/html_css_fetcher.c
deleted file mode 100644
index 0f8809a42..000000000
--- a/render/html_css_fetcher.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * Copyright 2008 Rob Kendrick <rjek@netsurf-browser.org>
- * Copyright 2013 John-Mark Bell <jmb@netsurf-browser.org>
- *
- * This file is part of NetSurf.
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <assert.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <dom/dom.h>
-#include <libwapcaplet/libwapcaplet.h>
-
-#include "netsurf/inttypes.h"
-#include "utils/config.h"
-#include "utils/log.h"
-#include "utils/ring.h"
-#include "utils/nsurl.h"
-#include "utils/utils.h"
-#include "content/fetch.h"
-#include "content/fetchers.h"
-
-#include "render/html_internal.h"
-
-typedef struct html_css_fetcher_item {
- uint32_t key;
- dom_string *data;
- nsurl *base_url;
-
- struct html_css_fetcher_item *r_next, *r_prev;
-} html_css_fetcher_item;
-
-typedef struct html_css_fetcher_context {
- struct fetch *parent_fetch;
-
- nsurl *url;
- html_css_fetcher_item *item;
-
- bool aborted;
- bool locked;
-
- struct html_css_fetcher_context *r_next, *r_prev;
-} html_css_fetcher_context;
-
-static uint32_t current_key = 0;
-static html_css_fetcher_item *items = NULL;
-static html_css_fetcher_context *ring = NULL;
-
-static bool html_css_fetcher_initialise(lwc_string *scheme)
-{
- NSLOG(netsurf, INFO, "html_css_fetcher_initialise called for %s",
- lwc_string_data(scheme));
- return true;
-}
-
-static void html_css_fetcher_finalise(lwc_string *scheme)
-{
- NSLOG(netsurf, INFO, "html_css_fetcher_finalise called for %s",
- lwc_string_data(scheme));
-}
-
-static bool html_css_fetcher_can_fetch(const nsurl *url)
-{
- return true;
-}
-
-static void *html_css_fetcher_setup(struct fetch *parent_fetch, nsurl *url,
- bool only_2xx, bool downgrade_tls, const char *post_urlenc,
- const struct fetch_multipart_data *post_multipart,
- const char **headers)
-{
- html_css_fetcher_context *ctx;
- lwc_string *path;
- uint32_t key;
- html_css_fetcher_item *item, *found = NULL;
-
- /* format of a x-ns-css URL is:
- * x-ns-url:<key>
- * Where key is an unsigned 32bit integer
- */
-
- path = nsurl_get_component(url, NSURL_PATH);
- /* The path must exist */
- if (path == NULL) {
- return NULL;
- }
-
- key = strtoul(lwc_string_data(path), NULL, 10);
-
- lwc_string_unref(path);
-
- /* There must be at least one item */
- if (items == NULL) {
- return NULL;
- }
-
- item = items;
- do {
- if (item->key == key) {
- found = item;
- break;
- }
-
- item = item->r_next;
- } while (item != items);
-
- /* We must have found the item */
- if (found == NULL) {
- return NULL;
- }
-
- ctx = calloc(1, sizeof(*ctx));
- if (ctx == NULL)
- return NULL;
-
- ctx->parent_fetch = parent_fetch;
- ctx->url = nsurl_ref(url);
- ctx->item = found;
-
- RING_INSERT(ring, ctx);
-
- return ctx;
-}
-
-static bool html_css_fetcher_start(void *ctx)
-{
- return true;
-}
-
-static void html_css_fetcher_free(void *ctx)
-{
- html_css_fetcher_context *c = ctx;
-
- nsurl_unref(c->url);
- if (c->item != NULL) {
- nsurl_unref(c->item->base_url);
- dom_string_unref(c->item->data);
- RING_REMOVE(items, c->item);
- free(c->item);
- }
- RING_REMOVE(ring, c);
- free(ctx);
-}
-
-static void html_css_fetcher_abort(void *ctx)
-{
- html_css_fetcher_context *c = ctx;
-
- /* To avoid the poll loop having to deal with the fetch context
- * disappearing from under it, we simply flag the abort here.
- * The poll loop itself will perform the appropriate cleanup.
- */
- c->aborted = true;
-}
-
-static void html_css_fetcher_send_callback(const fetch_msg *msg,
- html_css_fetcher_context *c)
-{
- c->locked = true;
- fetch_send_callback(msg, c->parent_fetch);
- c->locked = false;
-}
-
-static void html_css_fetcher_poll(lwc_string *scheme)
-{
- fetch_msg msg;
- html_css_fetcher_context *c, *next;
-
- if (ring == NULL) return;
-
- /* Iterate over ring, processing each pending fetch */
- c = ring;
- do {
- /* Ignore fetches that have been flagged as locked.
- * This allows safe re-entrant calls to this function.
- * Re-entrancy can occur if, as a result of a callback,
- * the interested party causes fetch_poll() to be called
- * again.
- */
- if (c->locked == true) {
- next = c->r_next;
- continue;
- }
-
- /* Only process non-aborted fetches */
- if (c->aborted) {
- /* Nothing to do */
- assert(c->locked == false);
- } else if (c->item != NULL) {
- char header[4096];
-
- fetch_set_http_code(c->parent_fetch, 200);
-
- /* Any callback can result in the fetch being aborted.
- * Therefore, we _must_ check for this after _every_
- * call to html_css_fetcher_send_callback().
- */
- snprintf(header, sizeof header,
- "Content-Type: text/css; charset=utf-8");
- msg.type = FETCH_HEADER;
- msg.data.header_or_data.buf = (const uint8_t *) header;
- msg.data.header_or_data.len = strlen(header);
- html_css_fetcher_send_callback(&msg, c);
-
- if (c->aborted == false) {
- snprintf(header, sizeof header,
- "Content-Length: %"PRIsizet,
- dom_string_byte_length(c->item->data));
- msg.type = FETCH_HEADER;
- msg.data.header_or_data.buf =
- (const uint8_t *) header;
- msg.data.header_or_data.len = strlen(header);
- html_css_fetcher_send_callback(&msg, c);
- }
-
- if (c->aborted == false) {
- snprintf(header, sizeof header,
- "X-NS-Base: %.*s",
- (int) nsurl_length(c->item->base_url),
- nsurl_access(c->item->base_url));
- msg.type = FETCH_HEADER;
- msg.data.header_or_data.buf =
- (const uint8_t *) header;
- msg.data.header_or_data.len = strlen(header);
- html_css_fetcher_send_callback(&msg, c);
- }
-
- if (c->aborted == false) {
- msg.type = FETCH_DATA;
- msg.data.header_or_data.buf =
- (const uint8_t *)
- dom_string_data(c->item->data);
- msg.data.header_or_data.len =
- dom_string_byte_length(c->item->data);
- html_css_fetcher_send_callback(&msg, c);
- }
-
- if (c->aborted == false) {
- msg.type = FETCH_FINISHED;
- html_css_fetcher_send_callback(&msg, c);
- }
- } else {
- NSLOG(netsurf, INFO, "Processing of %s failed!",
- nsurl_access(c->url));
-
- /* Ensure that we're unlocked here. If we aren't,
- * then html_css_fetcher_process() is broken.
- */
- assert(c->locked == false);
- }
-
- /* Compute next fetch item at the last possible moment as
- * processing this item may have added to the ring.
- */
- next = c->r_next;
-
- fetch_remove_from_queues(c->parent_fetch);
- fetch_free(c->parent_fetch);
-
- /* Advance to next ring entry, exiting if we've reached
- * the start of the ring or the ring has become empty
- */
- } while ( (c = next) != ring && ring != NULL);
-}
-
-/* exported interface documented in html_internal.h */
-nserror html_css_fetcher_register(void)
-{
- lwc_string *scheme;
- const struct fetcher_operation_table html_css_fetcher_ops = {
- .initialise = html_css_fetcher_initialise,
- .acceptable = html_css_fetcher_can_fetch,
- .setup = html_css_fetcher_setup,
- .start = html_css_fetcher_start,
- .abort = html_css_fetcher_abort,
- .free = html_css_fetcher_free,
- .poll = html_css_fetcher_poll,
- .finalise = html_css_fetcher_finalise
- };
-
- if (lwc_intern_string("x-ns-css", SLEN("x-ns-css"),
- &scheme) != lwc_error_ok) {
- NSLOG(netsurf, INFO, "could not intern \"x-ns-css\".");
- return NSERROR_INIT_FAILED;
- }
-
- return fetcher_add(scheme, &html_css_fetcher_ops);
-}
-
-/* exported interface documented in html_internal.h */
-nserror
-html_css_fetcher_add_item(dom_string *data, nsurl *base_url, uint32_t *key)
-{
- html_css_fetcher_item *item = malloc(sizeof(*item));
-
- if (item == NULL) {
- return NSERROR_NOMEM;
- }
-
- *key = item->key = current_key++;
- item->data = dom_string_ref(data);
- item->base_url = nsurl_ref(base_url);
-
- RING_INSERT(items, item);
-
- return NSERROR_OK;
-}
-