2023-04-04 17:01:24 +00:00
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#include <regex>
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2023-05-12 09:56:22 +00:00
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#include <FastHash.h>
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2023-04-04 17:01:24 +00:00
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2023-04-03 09:32:26 +00:00
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#include "config.h"
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2023-04-28 09:00:21 +00:00
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#include "pixivmodels.h"
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2023-04-03 09:32:26 +00:00
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#include "servehelper.h"
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2023-05-12 09:56:22 +00:00
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#include "routes/routes.h"
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2023-04-03 09:32:26 +00:00
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2023-04-28 09:00:21 +00:00
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static Element generate_pager(const Illusts& illusts, size_t page, const char* id);
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2023-05-05 16:28:33 +00:00
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static inline Element generate_illusts_grid(const httplib::Request& req, const Config& config, const Illusts& illusts);
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static inline Element generate_illusts_grid_item(const httplib::Request& req, const Config& config, const Illust& illust);
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static inline Element generate_illust_badge(const Illust& illust, const std::string& illust_url);
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2023-04-28 09:00:21 +00:00
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2023-06-04 06:22:19 +00:00
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void serve(const httplib::Request& req, httplib::Response& res, const Config& config, std::string title, Element element, Nodes extra_head) {
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2023-04-03 09:32:26 +00:00
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using namespace std::string_literals;
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2023-04-06 12:24:09 +00:00
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std::string css_url = get_origin(req, config) + "/style.css";
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2023-04-04 17:01:24 +00:00
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res.set_header("Content-Security-Policy", "default-src 'none'; style-src "s + css_url
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2023-04-09 08:17:06 +00:00
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+ "; img-src https://s.pximg.net " + config.image_proxy_url.get_origin());
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2023-04-03 09:32:26 +00:00
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2023-06-04 06:22:19 +00:00
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Element head("head", {
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Element("meta", {{"charset", "utf-8"}}, {}),
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Element("title", {std::move(title)}),
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Element("link", {{"rel", "stylesheet"}, {"href", std::move(css_url) + "?v=" + std::to_string(css_hash)}}, {}),
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Element("meta", {{"name", "viewport"}, {"content", "width=device-width,initial-scale=1"}}, {})
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});
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head.nodes.reserve(head.nodes.size() + extra_head.size());
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head.nodes.insert(head.nodes.end(), extra_head.begin(), extra_head.end());
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std::string html = "<!DOCTYPE html>"s + Element("html", {
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2023-06-04 06:22:19 +00:00
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std::move(head),
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2023-04-03 09:32:26 +00:00
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std::move(element)
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}).serialize();
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uint64_t hash = FastHash(html.data(), html.size(), 0);
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res.set_header("ETag", std::string(1, '"') + std::to_string(hash) + '"');
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if (should_send_304(req, hash)) {
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res.status = 304;
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res.set_header("Content-Length", std::to_string(html.size()));
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res.set_header("Content-Type", "text/html");
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} else {
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res.set_content(std::move(html), "text/html");
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}
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}
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2023-04-03 15:27:07 +00:00
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void serve_error(const httplib::Request& req, httplib::Response& res, const Config& config,
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std::string title, std::optional<std::string> subtitle, std::optional<std::string> info) {
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Element error_div("div", {{"class", "error"}}, {
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Element("h2", {title})
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});
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if (subtitle) {
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2023-04-04 08:33:48 +00:00
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error_div.nodes.push_back(Element("p", {
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std::move(*subtitle)
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}));
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}
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if (info) {
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error_div.nodes.push_back(Element("pre", {
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Element("code", {std::move(*info)})
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}));
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}
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Element body("body", {std::move(error_div)});
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serve(req, res, config, std::move(title), std::move(body));
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}
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2023-06-07 09:16:03 +00:00
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void serve_redirect(const httplib::Request& req, httplib::Response& res, const Config& config, std::string url, bool permanent) {
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using namespace std::string_literals;
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Element body("body", {
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"Redirecting to ",
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Element("a", {{"href", url}}, {url}),
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"…"
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});
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res.set_redirect(url, permanent ? 301 : 302);
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serve(req, res, config, "Redirecting to "s + std::move(url) + "…", std::move(body));
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}
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2023-04-28 09:00:21 +00:00
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2023-04-03 14:40:34 +00:00
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std::string get_origin(const httplib::Request& req, const Config& config) {
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if (req.has_header("X-Canonical-Origin")) {
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return req.get_header_value("X-Canonical-Origin");
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}
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if (config.canonical_origin) {
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return *config.canonical_origin;
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}
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std::string origin = "http://";
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if (req.has_header("Host")) {
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origin += req.get_header_value("Host");
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} else {
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origin += config.bind_host;
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if (config.bind_port != 80) {
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origin += ':' + std::to_string(config.bind_port);
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}
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}
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return origin;
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}
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2023-04-04 17:01:24 +00:00
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2023-04-09 17:34:13 +00:00
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std::string proxy_url(blankie::murl::Url base, blankie::murl::Url url) {
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if (!url.path.empty() && url.path[0] != '/') {
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base.path += '/';
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}
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base.path += blankie::murl::normalize_path(std::move(url.path));
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if (!base.query.empty() && !url.query.empty()) {
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base.query += '&';
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2023-04-05 16:36:20 +00:00
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}
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base.query += std::move(url.query);
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base.fragment = std::move(url.fragment);
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return base.to_string();
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}
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2023-06-07 09:16:03 +00:00
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std::string proxy_image_url(const httplib::Request& req, const Config& config, blankie::murl::Url url) {
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if (!url.is_host_equal("i.pximg.net")) {
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return url.to_string();
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}
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return url.fragment != "guess_extension"
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? proxy_url(config.image_proxy_url, std::move(url))
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: get_origin(req, config) + "/guess_extension/i.pximg.net" + url.path;
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}
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2023-04-28 09:00:21 +00:00
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2023-05-12 09:56:22 +00:00
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bool should_send_304(const httplib::Request& req, uint64_t hash) {
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std::string header = req.get_header_value("If-None-Match");
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if (header == "*") {
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return true;
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}
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size_t pos = header.find(std::string(1, '"') + std::to_string(hash) + '"');
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return pos != std::string::npos && (pos == 0 || header[pos - 1] != '/');
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}
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2023-04-28 09:00:21 +00:00
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Element generate_illusts_pager(const httplib::Request& req, const Config& config, const Illusts& illusts, size_t page, const char* id) {
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return Element("div", {{"id", id}}, {
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generate_pager(illusts, page, id),
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Element("br"),
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generate_illusts_grid(req, config, illusts),
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generate_pager(illusts, page, id)
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});
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}
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static Element generate_pager(const Illusts& illusts, size_t page, const char* id) {
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auto link = [&](size_t new_page, const char* text, bool add_link) {
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using namespace std::string_literals;
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Element b("b");
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if (add_link) {
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std::string href = "?p="s + std::to_string(new_page) + '#' + id;
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b.nodes.push_back(Element("a", {{"href", std::move(href)}}, {text}));
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} else {
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b.nodes.push_back(text);
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}
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return b;
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};
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return Element("div", {{"class", "center"}}, {
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link(1, "First", page != 0), " ",
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link(page, "Prev", page != 0), " ",
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std::to_string(page + 1), "/", std::to_string(illusts.total_pages), " ",
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link(page + 2, "Next", page + 1 < illusts.total_pages), " ",
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link(illusts.total_pages, "Last", page + 1 < illusts.total_pages)
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});
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}
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2023-05-05 16:28:33 +00:00
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static inline Element generate_illusts_grid(const httplib::Request& req, const Config& config, const Illusts& illusts) {
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2023-05-12 10:13:55 +00:00
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Element div("div", {{"class", "grid illusts_grid"}}, {});
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2023-04-28 09:00:21 +00:00
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div.nodes.reserve(illusts.illusts.size());
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for (const Illust& i : illusts.illusts) {
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div.nodes.push_back(generate_illusts_grid_item(req, config, i));
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}
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return div;
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}
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static inline Element generate_illusts_grid_item(const httplib::Request& req, const Config& config, const Illust& illust) {
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std::string illust_url = get_origin(req, config) + "/artworks/" + std::to_string(illust.illust_id);
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std::string image_url = proxy_image_url(req, config, illust.images[0].thumbnail_or_original(1).url);
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2023-04-28 09:00:21 +00:00
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2023-05-12 10:13:55 +00:00
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Element div("div", {{"class", "illusts_grid-illust"}}, {
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2023-05-05 16:28:33 +00:00
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Element("a", {{"href", illust_url}}, {
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2023-04-28 09:00:21 +00:00
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Element("img", {{"loading", "lazy"}, {"src", std::move(image_url)}}, {}),
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2023-05-05 16:28:33 +00:00
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Element("p", {illust.title})
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})
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});
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2023-05-05 16:33:51 +00:00
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if (illust.page_count > 1 || illust.ai_generated) {
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2023-05-05 16:28:33 +00:00
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div.nodes.push_back(generate_illust_badge(illust, std::move(illust_url)));
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}
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return div;
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}
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2023-05-05 16:28:33 +00:00
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static inline Element generate_illust_badge(const Illust& illust, const std::string& illust_url) {
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2023-05-12 10:13:55 +00:00
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const char* css_class = !illust.ai_generated ? "illusts_grid-illust_badge" : "illusts_grid-illust_badge ai";
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2023-05-05 16:28:33 +00:00
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2023-05-05 16:33:51 +00:00
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if (illust.page_count > 1) {
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return Element("a", {{"class", css_class}, {"href", illust_url + "?preview=1"}}, {
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std::to_string(illust.page_count), " pages"
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});
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} else {
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return Element("span", {{"class", css_class}}, {
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"AI"
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});
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}
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2023-05-05 16:28:33 +00:00
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}
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