diff options
Diffstat (limited to 'render/html_css_fetcher.c')
-rw-r--r-- | render/html_css_fetcher.c | 321 |
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; -} - |