diff options
Diffstat (limited to 'content/fetchers/about.c')
| -rw-r--r-- | content/fetchers/about.c | 862 |
1 files changed, 0 insertions, 862 deletions
diff --git a/content/fetchers/about.c b/content/fetchers/about.c deleted file mode 100644 index 4d14020b0..000000000 --- a/content/fetchers/about.c +++ /dev/null @@ -1,862 +0,0 @@ -/* - * Copyright 2011 Vincent Sanders <vince@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/>. - */ - -/** - * \file - * - * URL handling for the "about" scheme. - * - * Based on the data fetcher by Rob Kendrick - * This fetcher provides a simple scheme for the user to access - * information from the browser from a known, fixed URL. - */ - -#include <stdlib.h> -#include <string.h> -#include <stdio.h> -#include <stdarg.h> - -#include "testament.h" -#include "utils/corestrings.h" -#include "utils/nsoption.h" -#include "utils/utils.h" -#include "utils/ring.h" - -#include "content/fetch.h" -#include "content/fetchers.h" -#include "content/fetchers/about.h" -#include "image/image_cache.h" - - -struct fetch_about_context; - -typedef bool (*fetch_about_handler)(struct fetch_about_context *); - -/** Context for an about fetch */ -struct fetch_about_context { - struct fetch_about_context *r_next, *r_prev; - - struct fetch *fetchh; /**< Handle for this fetch */ - - bool aborted; /**< Flag indicating fetch has been aborted */ - bool locked; /**< Flag indicating entry is already entered */ - - nsurl *url; /**< The full url the fetch refers to */ - - fetch_about_handler handler; -}; - -static struct fetch_about_context *ring = NULL; - -/** issue fetch callbacks with locking */ -static inline bool fetch_about_send_callback(const fetch_msg *msg, - struct fetch_about_context *ctx) -{ - ctx->locked = true; - fetch_send_callback(msg, ctx->fetchh); - ctx->locked = false; - - return ctx->aborted; -} - -static bool fetch_about_send_header(struct fetch_about_context *ctx, - const char *fmt, ...) -{ - char header[64]; - fetch_msg msg; - va_list ap; - - va_start(ap, fmt); - - vsnprintf(header, sizeof header, fmt, ap); - - va_end(ap); - - msg.type = FETCH_HEADER; - msg.data.header_or_data.buf = (const uint8_t *) header; - msg.data.header_or_data.len = strlen(header); - - fetch_about_send_callback(&msg, ctx); - - return ctx->aborted; -} - - - - -static bool fetch_about_blank_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - const char buffer[2] = { ' ', '\0' }; - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, 200); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/html")) - goto fetch_about_blank_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - msg.data.header_or_data.len = strlen(buffer); - - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_blank_handler_aborted; - - msg.type = FETCH_FINISHED; - - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_blank_handler_aborted: - return false; -} - - -static bool fetch_about_credits_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - - /* content is going to return redirect */ - fetch_set_http_code(ctx->fetchh, 302); - - msg.type = FETCH_REDIRECT; - msg.data.redirect = "resource:credits.html"; - - fetch_about_send_callback(&msg, ctx); - - return true; -} - - -static bool fetch_about_licence_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - - /* content is going to return redirect */ - fetch_set_http_code(ctx->fetchh, 302); - - msg.type = FETCH_REDIRECT; - msg.data.redirect = "resource:licence.html"; - - fetch_about_send_callback(&msg, ctx); - - return true; -} - -/** - * Handler to generate about:cache page. - * - * Shows details of current image cache. - * - * \param ctx The fetcher context. - * \return true if handled false if aborted. - */ -static bool fetch_about_imagecache_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - char buffer[2048]; /* output buffer */ - int code = 200; - int slen; - unsigned int cent_loop = 0; - int res = 0; - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, code); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/html")) - goto fetch_about_imagecache_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - - /* page head */ - slen = snprintf(buffer, sizeof buffer, - "<html>\n<head>\n" - "<title>NetSurf Browser Image Cache Status</title>\n" - "<link rel=\"stylesheet\" type=\"text/css\" " - "href=\"resource:internal.css\">\n" - "</head>\n" - "<body id =\"cachelist\">\n" - "<p class=\"banner\">" - "<a href=\"http://www.netsurf-browser.org/\">" - "<img src=\"resource:netsurf.png\" alt=\"NetSurf\"></a>" - "</p>\n" - "<h1>NetSurf Browser Image Cache Status</h1>\n" ); - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_imagecache_handler_aborted; - - /* image cache summary */ - slen = image_cache_snsummaryf(buffer, sizeof(buffer), - "<p>Configured limit of %a hysteresis of %b</p>\n" - "<p>Total bitmap size in use %c (in %d)</p>\n" - "<p>Age %es</p>\n" - "<p>Peak size %f (in %g)</p>\n" - "<p>Peak image count %h (size %i)</p>\n" - "<p>Cache total/hit/miss/fail (counts) %j/%k/%l/%m " - "(%pj%%/%pk%%/%pl%%/%pm%%)</p>\n" - "<p>Cache total/hit/miss/fail (size) %n/%o/%q/%r " - "(%pn%%/%po%%/%pq%%/%pr%%)</p>\n" - "<p>Total images never rendered: %s " - "(includes %t that were converted)</p>\n" - "<p>Total number of excessive conversions: %u " - "(from %v images converted more than once)" - "</p>\n" - "<p>Bitmap of size %w had most (%x) conversions</p>\n" - "<h2>Current image cache contents</h2>\n"); - if (slen >= (int) (sizeof(buffer))) - goto fetch_about_imagecache_handler_aborted; /* overflow */ - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_imagecache_handler_aborted; - - - /* image cache entry table */ - slen = snprintf(buffer, sizeof buffer, - "<p class=\"imagecachelist\">\n" - "<strong>" - "<span>Entry</span>" - "<span>Content Key</span>" - "<span>Redraw Count</span>" - "<span>Conversion Count</span>" - "<span>Last Redraw</span>" - "<span>Bitmap Age</span>" - "<span>Bitmap Size</span>" - "<span>Source</span>" - "</strong>\n"); - do { - res = image_cache_snentryf(buffer + slen, sizeof buffer - slen, - cent_loop, - "<a href=\"%U\">" - "<span>%e</span>" - "<span>%k</span>" - "<span>%r</span>" - "<span>%c</span>" - "<span>%a</span>" - "<span>%g</span>" - "<span>%s</span>" - "<span>%o</span>" - "</a>\n"); - if (res <= 0) - break; /* last option */ - - if (res >= (int) (sizeof buffer - slen)) { - /* last entry would not fit in buffer, submit buffer */ - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_imagecache_handler_aborted; - slen = 0; - } else { - /* normal addition */ - slen += res; - cent_loop++; - } - } while (res > 0); - - slen += snprintf(buffer + slen, sizeof buffer - slen, - "</p>\n</body>\n</html>\n"); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_imagecache_handler_aborted; - - msg.type = FETCH_FINISHED; - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_imagecache_handler_aborted: - return false; -} - -/** Handler to generate about:config page */ -static bool fetch_about_config_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - char buffer[1024]; - int code = 200; - int slen; - unsigned int opt_loop = 0; - int res = 0; - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, code); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/html")) - goto fetch_about_config_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - - slen = snprintf(buffer, sizeof buffer, - "<html>\n<head>\n" - "<title>NetSurf Browser Config</title>\n" - "<link rel=\"stylesheet\" type=\"text/css\" " - "href=\"resource:internal.css\">\n" - "</head>\n" - "<body id =\"configlist\">\n" - "<p class=\"banner\">" - "<a href=\"http://www.netsurf-browser.org/\">" - "<img src=\"resource:netsurf.png\" alt=\"NetSurf\"></a>" - "</p>\n" - "<h1>NetSurf Browser Config</h1>\n" - "<table class=\"config\">\n" - "<tr><th>Option</th><th>Type</th><th>Provenance</th><th>Setting</th></tr>\n"); - - do { - res = nsoption_snoptionf(buffer + slen, - sizeof buffer - slen, - opt_loop, - "<tr><th>%k</th><td>%t</td><td>%p</td><td>%V</td></tr>\n"); - if (res <= 0) - break; /* last option */ - - if (res >= (int) (sizeof buffer - slen)) { - /* last entry would not fit in buffer, submit buffer */ - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_config_handler_aborted; - slen = 0; - } else { - /* normal addition */ - slen += res; - opt_loop++; - } - } while (res > 0); - - slen += snprintf(buffer + slen, sizeof buffer - slen, - "</table>\n</body>\n</html>\n"); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_config_handler_aborted; - - msg.type = FETCH_FINISHED; - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_config_handler_aborted: - return false; -} - - -/** Generate the text of a Choices file which represents the current - * in use options. - */ -static bool fetch_about_choices_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - char buffer[1024]; - int code = 200; - int slen; - unsigned int opt_loop = 0; - int res = 0; - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, code); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/plain")) - goto fetch_about_choices_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - - slen = snprintf(buffer, sizeof buffer, - "# Automatically generated current NetSurf browser Choices\n"); - - do { - res = nsoption_snoptionf(buffer + slen, - sizeof buffer - slen, - opt_loop, - "%k:%v\n"); - if (res <= 0) - break; /* last option */ - - if (res >= (int) (sizeof buffer - slen)) { - /* last entry would not fit in buffer, submit buffer */ - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_choices_handler_aborted; - slen = 0; - } else { - /* normal addition */ - slen += res; - opt_loop++; - } - } while (res > 0); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_choices_handler_aborted; - - msg.type = FETCH_FINISHED; - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_choices_handler_aborted: - return false; -} - -/** Generate the text of an svn testament which represents the current - * build-tree status - */ -typedef struct { const char *leaf; const char *modtype; } modification_t; -static bool fetch_about_testament_handler(struct fetch_about_context *ctx) -{ - static modification_t modifications[] = WT_MODIFICATIONS; - fetch_msg msg; - char buffer[1024]; - int code = 200; - int slen; - int i; - - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, code); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/plain")) - goto fetch_about_testament_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - - slen = snprintf(buffer, sizeof buffer, - "# Automatically generated by NetSurf build system\n\n"); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - slen = snprintf(buffer, sizeof buffer, -#if defined(WT_BRANCHISTRUNK) || defined(WT_BRANCHISMASTER) - "# This is a *DEVELOPMENT* build from the main line.\n\n" -#elif defined(WT_BRANCHISTAG) && (WT_MODIFIED == 0) - "# This is a tagged build of NetSurf\n" -#ifdef WT_TAGIS - "# The tag used was '" WT_TAGIS "'\n\n" -#else - "\n" -#endif -#elif defined(WT_NO_SVN) || defined(WT_NO_GIT) - "# This NetSurf was built outside of our revision " - "control environment.\n" - "# This testament is therefore not very useful.\n\n" -#else - "# This NetSurf was built from a branch (" WT_BRANCHPATH ").\n\n" -#endif -#if defined(CI_BUILD) - "# This build carries the CI build number '" CI_BUILD "'\n\n" -#endif - ); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - - slen = snprintf(buffer, sizeof buffer, - "Built by %s (%s) from %s at revision %s on %s\n\n", - GECOS, USERNAME, WT_BRANCHPATH, WT_REVID, WT_COMPILEDATE); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - slen = snprintf(buffer, sizeof buffer, - "Built on %s in %s\n\n", - WT_HOSTNAME, WT_ROOT); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - if (WT_MODIFIED > 0) { - slen = snprintf(buffer, sizeof buffer, - "Working tree has %d modification%s\n\n", - WT_MODIFIED, WT_MODIFIED == 1 ? "" : "s"); - } else { - slen = snprintf(buffer, sizeof buffer, - "Working tree is not modified.\n"); - } - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - for (i = 0; i < WT_MODIFIED; ++i) { - slen = snprintf(buffer, sizeof buffer, - " %s %s\n", - modifications[i].modtype, - modifications[i].leaf); - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_testament_handler_aborted; - - } - - msg.type = FETCH_FINISHED; - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_testament_handler_aborted: - return false; -} - -static bool fetch_about_logo_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - - /* content is going to return redirect */ - fetch_set_http_code(ctx->fetchh, 302); - - msg.type = FETCH_REDIRECT; - msg.data.redirect = "resource:netsurf.png"; - - fetch_about_send_callback(&msg, ctx); - - return true; -} - -static bool fetch_about_welcome_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - - /* content is going to return redirect */ - fetch_set_http_code(ctx->fetchh, 302); - - msg.type = FETCH_REDIRECT; - msg.data.redirect = "resource:welcome.html"; - - fetch_about_send_callback(&msg, ctx); - - return true; -} - -static bool fetch_about_maps_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - - /* content is going to return redirect */ - fetch_set_http_code(ctx->fetchh, 302); - - msg.type = FETCH_REDIRECT; - msg.data.redirect = "resource:maps.html"; - - fetch_about_send_callback(&msg, ctx); - - return true; -} - -/* Forward declaration because this handler requires the handler table. */ -static bool fetch_about_about_handler(struct fetch_about_context *ctx); - -struct about_handlers { - const char *name; /**< name to match in url */ - int name_len; - lwc_string *lname; /**< Interned name */ - fetch_about_handler handler; /* handler for the url */ - bool hidden; /* Flag indicating if entry should show in listing */ -}; - -/** List of about paths and their handlers */ -struct about_handlers about_handler_list[] = { - { "credits", SLEN("credits"), NULL, - fetch_about_credits_handler, false }, - { "licence", SLEN("licence"), NULL, - fetch_about_licence_handler, false }, - { "license", SLEN("license"), NULL, - fetch_about_licence_handler, true }, - { "welcome", SLEN("welcome"), NULL, - fetch_about_welcome_handler, false }, - { "maps", SLEN("maps"), NULL, - fetch_about_maps_handler, false }, - { "config", SLEN("config"), NULL, - fetch_about_config_handler, false }, - { "Choices", SLEN("Choices"), NULL, - fetch_about_choices_handler, false }, - { "testament", SLEN("testament"), NULL, - fetch_about_testament_handler, false }, - { "about", SLEN("about"), NULL, - fetch_about_about_handler, true }, - { "logo", SLEN("logo"), NULL, - fetch_about_logo_handler, true }, - /* details about the image cache */ - { "imagecache", SLEN("imagecache"), NULL, - fetch_about_imagecache_handler, true }, - /* The default blank page */ - { "blank", SLEN("blank"), NULL, - fetch_about_blank_handler, true } -}; - -#define about_handler_list_len (sizeof(about_handler_list) / \ - sizeof(struct about_handlers)) - -/** - * List all the valid about: paths available - * - * \param ctx The fetch context. - * \return true for sucess or false to generate an error. - */ -static bool fetch_about_about_handler(struct fetch_about_context *ctx) -{ - fetch_msg msg; - char buffer[1024]; - int code = 200; - int slen; - unsigned int abt_loop = 0; - int res = 0; - - /* content is going to return ok */ - fetch_set_http_code(ctx->fetchh, code); - - /* content type */ - if (fetch_about_send_header(ctx, "Content-Type: text/html")) - goto fetch_about_config_handler_aborted; - - msg.type = FETCH_DATA; - msg.data.header_or_data.buf = (const uint8_t *) buffer; - - slen = snprintf(buffer, sizeof buffer, - "<html>\n<head>\n" - "<title>NetSurf List of About pages</title>\n" - "<link rel=\"stylesheet\" type=\"text/css\" " - "href=\"resource:internal.css\">\n" - "</head>\n" - "<body id =\"aboutlist\">\n" - "<p class=\"banner\">" - "<a href=\"http://www.netsurf-browser.org/\">" - "<img src=\"resource:netsurf.png\" alt=\"NetSurf\"></a>" - "</p>\n" - "<h1>NetSurf List of About pages</h1>\n" - "<ul>\n"); - - for (abt_loop = 0; abt_loop < about_handler_list_len; abt_loop++) { - - /* Skip over hidden entries */ - if (about_handler_list[abt_loop].hidden) - continue; - - res = snprintf(buffer + slen, sizeof buffer - slen, - "<li><a href=\"about:%s\">about:%s</a></li>\n", - about_handler_list[abt_loop].name, - about_handler_list[abt_loop].name); - if (res <= 0) - break; /* last option */ - - if (res >= (int)(sizeof buffer - slen)) { - /* last entry would not fit in buffer, submit buffer */ - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_config_handler_aborted; - slen = 0; - } else { - /* normal addition */ - slen += res; - } - } - - slen += snprintf(buffer + slen, sizeof buffer - slen, - "</ul>\n</body>\n</html>\n"); - - msg.data.header_or_data.len = slen; - if (fetch_about_send_callback(&msg, ctx)) - goto fetch_about_config_handler_aborted; - - msg.type = FETCH_FINISHED; - fetch_about_send_callback(&msg, ctx); - - return true; - -fetch_about_config_handler_aborted: - return false; -} - - -/** callback to initialise the about fetcher. */ -static bool fetch_about_initialise(lwc_string *scheme) -{ - unsigned int abt_loop = 0; - lwc_error error; - - for (abt_loop = 0; abt_loop < about_handler_list_len; abt_loop++) { - error = lwc_intern_string(about_handler_list[abt_loop].name, - about_handler_list[abt_loop].name_len, - &about_handler_list[abt_loop].lname); - if (error != lwc_error_ok) { - while (abt_loop-- != 0) { - lwc_string_unref(about_handler_list[abt_loop].lname); - } - return false; - } - } - - return true; -} - -/** callback to finalise the about fetcher. */ -static void fetch_about_finalise(lwc_string *scheme) -{ - unsigned int abt_loop = 0; - for (abt_loop = 0; abt_loop < about_handler_list_len; abt_loop++) { - lwc_string_unref(about_handler_list[abt_loop].lname); - } -} - -static bool fetch_about_can_fetch(const nsurl *url) -{ - return true; -} - -/** callback to set up a about fetch context. */ -static void * -fetch_about_setup(struct fetch *fetchh, - nsurl *url, - bool only_2xx, - bool downgrade_tls, - const char *post_urlenc, - const struct fetch_multipart_data *post_multipart, - const char **headers) -{ - struct fetch_about_context *ctx; - unsigned int handler_loop; - lwc_string *path; - bool match; - - ctx = calloc(1, sizeof(*ctx)); - if (ctx == NULL) - return NULL; - - path = nsurl_get_component(url, NSURL_PATH); - - for (handler_loop = 0; - handler_loop < about_handler_list_len; - handler_loop++) { - ctx->handler = about_handler_list[handler_loop].handler; - if (lwc_string_isequal(path, - about_handler_list[handler_loop].lname, - &match) == lwc_error_ok && match) { - break; - } - } - - if (path != NULL) - lwc_string_unref(path); - - ctx->fetchh = fetchh; - ctx->url = nsurl_ref(url); - - RING_INSERT(ring, ctx); - - return ctx; -} - -/** callback to free a about fetch */ -static void fetch_about_free(void *ctx) -{ - struct fetch_about_context *c = ctx; - nsurl_unref(c->url); - RING_REMOVE(ring, c); - free(ctx); -} - -/** callback to start a about fetch */ -static bool fetch_about_start(void *ctx) -{ - return true; -} - -/** callback to abort a about fetch */ -static void fetch_about_abort(void *ctx) -{ - struct fetch_about_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; -} - - -/** callback to poll for additional about fetch contents */ -static void fetch_about_poll(lwc_string *scheme) -{ - struct fetch_about_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 == false) { - /* about fetches can be processed in one go */ - c->handler(c); - } - - /* 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->fetchh); - fetch_free(c->fetchh); - - /* 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); -} - -nserror fetch_about_register(void) -{ - lwc_string *scheme = lwc_string_ref(corestring_lwc_about); - const struct fetcher_operation_table fetcher_ops = { - .initialise = fetch_about_initialise, - .acceptable = fetch_about_can_fetch, - .setup = fetch_about_setup, - .start = fetch_about_start, - .abort = fetch_about_abort, - .free = fetch_about_free, - .poll = fetch_about_poll, - .finalise = fetch_about_finalise - }; - - return fetcher_add(scheme, &fetcher_ops); -} |