Split code and add breadcrumb nav

1 files changed, 123 insertions, 0 deletions

diff --git a/server.c b/server.c
new file mode 100644
index 0000000..de18e7d
--- /dev/null
+++ b/server.c
@@ -0,0 +1,123 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "server.h"
+
+sqlite3 *db;
+struct Statements stmt;
+
+static void prepare(sqlite3_stmt **stmt, const char *query) {
+	int error = sqlite3_prepare_v3(
+		db, query, -1, SQLITE_PREPARE_PERSISTENT, stmt, NULL
+	);
+	if (error) errx(EX_SOFTWARE, "%s: %s", sqlite3_errmsg(db), query);
+}
+
+const char *Pages[PagesLen] = {
+#define X(page, path) [page] = path,
+	ENUM_PAGES
+#undef X
+};
+
+const struct kvalid Keys[KeysLen] = {
+#define X(key, name, valid) [key] = { valid, name },
+	ENUM_KEYS
+#undef X
+};
+
+bool pagePublic;
+
+static enum kcgi_err request(struct kreq *req) {
+	if (req->method != KMETHOD_HEAD && req->method != KMETHOD_GET) {
+		return httpFail(req, KHTTP_405);
+	}
+	switch (req->page) {
+		case Networks: return pageNetworks(req);
+		case Contexts: return pageContexts(req);
+		case Events:   return pageEvents(req);
+		case Search:   return pageSearch(req);
+		default:       return httpFail(req, KHTTP_404);
+	}
+}
+
+int main(int argc, char *argv[]) {
+	bool fastCGI = false;
+
+	for (int opt; 0 < (opt = getopt(argc, argv, "fps:"));) {
+		switch (opt) {
+			break; case 'f': fastCGI = true;
+			break; case 'p': pagePublic = true;
+			break; case 's': htmlStylesheet = optarg;
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (optind == argc) errx(EX_USAGE, "database path required");
+
+	int error = sqlite3_open_v2(argv[optind], &db, SQLITE_OPEN_READONLY, NULL);
+	if (error) errx(EX_NOINPUT, "%s: %s", argv[optind], sqlite3_errmsg(db));
+	atexit(dbClose);
+
+	sqlite3_stmt *check;
+	error = sqlite3_prepare_v2(
+		db, SQL(PRAGMA user_version;), -1, &check, NULL
+	);
+	if (error) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
+
+	error = sqlite3_step(check);
+	if (error != SQLITE_ROW) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
+
+	int version = sqlite3_column_int(check, 0);
+	if (version != DatabaseVersion) {
+		errx(EX_DATAERR, "unsupported database version %d", version);
+	}
+	sqlite3_finalize(check);
+
+	prepare(&stmt.networks, NetworksQuery);
+	prepare(&stmt.contexts, ContextsQuery);
+	
+	if (fastCGI) {
+		struct kfcgi *fcgi;
+		enum kcgi_err error = khttp_fcgi_init(
+			&fcgi, Keys, KeysLen, Pages, PagesLen, Networks
+		);
+		if (error) errx(EX_CONFIG, "khttp_fcgi_init: %s", kcgi_strerror(error));
+		for (
+			struct kreq req;
+			KCGI_OK == (error = khttp_fcgi_parse(fcgi, &req));
+			khttp_free(&req)
+		) {
+			error = request(&req);
+			if (error && error != KCGI_HUP) break;
+		}
+		errx(EX_PROTOCOL, "khttp_fcgi_parse: %s", kcgi_strerror(error));
+	} else {
+		struct kreq req;
+		enum kcgi_err error = khttp_parse(
+			&req, Keys, KeysLen, Pages, PagesLen, Networks
+		);
+		if (error) errx(EX_PROTOCOL, "khttp_parse: %s", kcgi_strerror(error));
+		error = request(&req);
+		if (error) errx(EX_PROTOCOL, "%s", kcgi_strerror(error));
+		khttp_free(&req);
+	}
+}