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-rw-r--r--contrib/palaver/notify.c809
1 files changed, 0 insertions, 809 deletions
diff --git a/contrib/palaver/notify.c b/contrib/palaver/notify.c
deleted file mode 100644
index 67d416c..0000000
--- a/contrib/palaver/notify.c
+++ /dev/null
@@ -1,809 +0,0 @@
-/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
- *
- * This program 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, 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 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 <https://www.gnu.org/licenses/>.
- *
- * Additional permission under GNU GPL version 3 section 7:
- *
- * If you modify this Program, or any covered work, by linking or
- * combining it with OpenSSL (or a modified version of that library),
- * containing parts covered by the terms of the OpenSSL License and the
- * original SSLeay license, the licensors of this Program grant you
- * additional permission to convey the resulting work. Corresponding
- * Source for a non-source form of such a combination shall include the
- * source code for the parts of OpenSSL used as well as that of the
- * covered work.
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <curl/curl.h>
-#include <err.h>
-#include <errno.h>
-#include <limits.h>
-#include <signal.h>
-#include <sqlite3.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sysexits.h>
-#include <time.h>
-#include <tls.h>
-#include <unistd.h>
-
-// Why must it return (const unsigned char *)?
-#define sqlite3_column_text(...) (const char *)sqlite3_column_text(__VA_ARGS__)
-
-#define DATABASE_PATH "pounce/palaver.sqlite"
-
-#define SQL(...) #__VA_ARGS__
-#define ARRAY_LEN(a) (sizeof(a) / sizeof((a)[0]))
-
-static bool verbose;
-static char curlError[CURL_ERROR_SIZE];
-
-static CURL *curl;
-static sqlite3 *db;
-static struct tls *client;
-
-static void dbOpen(const char *path, int flags) {
-	int error = sqlite3_open_v2(path, &db, flags, NULL);
-	if (error == SQLITE_CANTOPEN) {
-		sqlite3_close(db);
-		db = NULL;
-		return;
-	}
-	if (error) errx(EX_NOINPUT, "%s: %s", path, sqlite3_errmsg(db));
-
-	sqlite3_busy_timeout(db, 10000);
-}
-
-static void dbFind(char *path) {
-	if (path) {
-		dbOpen(path, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
-		if (db) return;
-		errx(EX_NOINPUT, "%s: database not found", path);
-	}
-
-	const char *home = getenv("HOME");
-	const char *dataHome = getenv("XDG_DATA_HOME");
-	const char *dataDirs = getenv("XDG_DATA_DIRS");
-	if (!dataDirs) dataDirs = "/usr/local/share:/usr/share";
-
-	char buf[PATH_MAX];
-	if (dataHome) {
-		snprintf(buf, sizeof(buf), "%s/" DATABASE_PATH, dataHome);
-	} else {
-		if (!home) errx(EX_CONFIG, "HOME unset");
-		snprintf(buf, sizeof(buf), "%s/.local/share/" DATABASE_PATH, home);
-	}
-	dbOpen(buf, SQLITE_OPEN_READWRITE);
-	if (db) return;
-
-	char create[PATH_MAX];
-	snprintf(create, sizeof(create), "%s", buf);
-
-	while (*dataDirs) {
-		size_t len = strcspn(dataDirs, ":");
-		snprintf(buf, sizeof(buf), "%.*s/" DATABASE_PATH, (int)len, dataDirs);
-		dbOpen(buf, SQLITE_OPEN_READWRITE);
-		if (db) return;
-		dataDirs += len;
-		if (*dataDirs) dataDirs++;
-	}
-
-	char *base = strrchr(create, '/');
-	*base = '\0';
-	int error = mkdir(create, 0700);
-	if (error && errno != EEXIST) err(EX_CANTCREAT, "%s", create);
-	*base = '/';
-
-	dbOpen(create, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
-	if (!db) errx(EX_CANTCREAT, "%s: cannot create database", create);
-}
-
-static int dbParam(sqlite3_stmt *stmt, const char *param) {
-	int index = sqlite3_bind_parameter_index(stmt, param);
-	if (index) return index;
-	errx(EX_SOFTWARE, "no such parameter %s: %s", param, sqlite3_sql(stmt));
-}
-
-static void
-dbBindText(sqlite3_stmt *stmt, const char *param, const char *value) {
-	if (!sqlite3_bind_text(stmt, dbParam(stmt, param), value, -1, NULL)) return;
-	errx(EX_SOFTWARE, "sqlite3_bind_text: %s", sqlite3_errmsg(db));
-}
-
-static void
-dbBindCopy(sqlite3_stmt *stmt, const char *param, const char *value) {
-	int error = sqlite3_bind_text(
-		stmt, dbParam(stmt, param), value, -1, SQLITE_TRANSIENT
-	);
-	if (error) errx(EX_SOFTWARE, "sqlite3_bind_text: %s", sqlite3_errmsg(db));
-}
-
-static void dbVerbose(sqlite3_stmt *stmt) {
-	if (!verbose) return;
-	char *sql = sqlite3_expanded_sql(stmt);
-	if (sql) fprintf(stderr, "%s\n", sql);
-	sqlite3_free(sql);
-}
-
-static void dbInit(void) {
-	const char *sql = SQL(
-		CREATE TABLE IF NOT EXISTS clients (
-			host TEXT NOT NULL,
-			port INTEGER NOT NULL,
-			client TEXT NOT NULL,
-			version TEXT NOT NULL,
-			UNIQUE (host, port, client)
-		);
-		CREATE TABLE IF NOT EXISTS preferences (
-			client TEXT NOT NULL,
-			key TEXT NOT NULL,
-			value TEXT NOT NULL
-		);
-		CREATE INDEX IF NOT EXISTS preferencesIndex
-		ON preferences (client, key);
-		CREATE TABLE IF NOT EXISTS badges (
-			host TEXT NOT NULL,
-			port TEXT NOT NULL,
-			count INTEGER NOT NULL,
-			UNIQUE (host, port)
-		);
-	);
-	int error = sqlite3_exec(db, sql, NULL, NULL, NULL);
-	if (error) errx(EX_SOFTWARE, "%s: %s", sqlite3_errmsg(db), sql);
-}
-
-static void clientWrite(const char *ptr, size_t len) {
-	while (len) {
-		ssize_t ret = tls_write(client, ptr, len);
-		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
-		if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client));
-		ptr += ret;
-		len -= ret;
-	}
-}
-
-static void format(const char *format, ...) {
-	char buf[1024];
-	va_list ap;
-	va_start(ap, format);
-	int len = vsnprintf(buf, sizeof(buf), format, ap);
-	va_end(ap);
-	assert((size_t)len < sizeof(buf));
-	if (verbose) fprintf(stderr, "%s", buf);
-	clientWrite(buf, len);
-}
-
-enum { ParamCap = 4 };
-struct Message {
-	char *time;
-	char *nick;
-	char *cmd;
-	char *params[ParamCap];
-};
-
-static struct Message parse(char *line) {
-	if (verbose) fprintf(stderr, "%s\n", line);
-	struct Message msg = {0};
-	if (line[0] == '@') {
-		char *tags = 1 + strsep(&line, " ");
-		while (tags) {
-			char *tag = strsep(&tags, ";");
-			char *key = strsep(&tag, "=");
-			if (!strcmp(key, "time")) msg.time = tag;
-		}
-	}
-	if (line[0] == ':') {
-		char *origin = 1 + strsep(&line, " ");
-		msg.nick = strsep(&origin, "!");
-	}
-	msg.cmd = strsep(&line, " ");
-	for (size_t i = 0; line && i < ParamCap; ++i) {
-		if (line[0] == ':') {
-			msg.params[i] = &line[1];
-			break;
-		}
-		msg.params[i] = strsep(&line, " ");
-	}
-	return msg;
-}
-
-static void require(const struct Message *msg, bool nick, size_t len) {
-	if (nick && !msg->nick) errx(EX_PROTOCOL, "%s missing origin", msg->cmd);
-	for (size_t i = 0; i < len; ++i) {
-		if (msg->params[i]) continue;
-		errx(EX_PROTOCOL, "%s missing parameter %zu", msg->cmd, 1 + i);
-	}
-}
-
-typedef void Handler(struct Message *msg);
-
-static void handleCap(struct Message *msg) {
-	require(msg, false, 3);
-	if (!strcmp(msg->params[1], "NAK")) {
-		errx(EX_CONFIG, "pounce palaver option not enabled");
-	}
-}
-
-static void handlePing(struct Message *msg) {
-	require(msg, false, 1);
-	format("PONG :%s\r\n", msg->params[0]);
-}
-
-static void handleError(struct Message *msg) {
-	require(msg, false, 1);
-	errx(EX_UNAVAILABLE, "%s", msg->params[0]);
-}
-
-static char *nick;
-static bool away;
-
-static void handleReplyWelcome(struct Message *msg) {
-	require(msg, false, 1);
-	free(nick);
-	nick = strdup(msg->params[0]);
-	if (!nick) err(EX_OSERR, "strdup");
-	format("USERHOST %s\r\n", nick);
-}
-
-static void handleNick(struct Message *msg) {
-	require(msg, true, 1);
-	if (nick && !strcmp(msg->nick, nick)) {
-		free(nick);
-		nick = strdup(msg->params[0]);
-		if (!nick) err(EX_OSERR, "strdup");
-	}
-}
-
-static void handleReplyUserHost(struct Message *msg) {
-	require(msg, false, 2);
-	while (msg->params[1]) {
-		char *reply = strsep(&msg->params[1], " ");
-		char *replyNick = strsep(&reply, "*=");
-		if (strcmp(replyNick, nick)) continue;
-		if (reply && !reply[0]) strsep(&msg->params[1], "=");
-		if (!reply) errx(EX_PROTOCOL, "invalid USERHOST reply");
-		away = (reply[0] == '-');
-		break;
-	}
-}
-
-static bool sensitive;
-
-static void keyword(sqlite3_context *ctx, int n, sqlite3_value *args[]) {
-	assert(n == 2);
-	const char *haystack = (const char *)sqlite3_value_text(args[0]);
-	const char *needle = (const char *)sqlite3_value_text(args[1]);
-	if (!nick || !haystack || !needle) {
-		sqlite3_result_null(ctx);
-		return;
-	}
-
-	char *copy = NULL;
-	const char *replace;
-	if (!strcmp(needle, "{nick}")) {
-		needle = nick;
-	} else if (NULL != (replace = strstr(needle, "{nick}"))) {
-		int n = asprintf(
-			&copy, "%.*s%s%s",
-			(int)(replace - needle), needle, nick, &replace[6]
-		);
-		if (n < 0) {
-			sqlite3_result_error_nomem(ctx);
-			return;
-		}
-		needle = copy;
-	}
-
-	size_t len = strlen(needle);
-	const char *match = haystack;
-	sqlite3_result_int(ctx, false);
-	while (NULL != (match = (sensitive ? strstr : strcasestr)(match, needle))) {
-		char a = (match > haystack ? match[-1] : ' ');
-		char b = (match[len] ? match[len] : ' ');
-		if (b == '\1') b = ' ';
-		if ((isspace(a) || ispunct(a)) && (isspace(b) || ispunct(b))) {
-			sqlite3_result_int(ctx, true);
-			break;
-		}
-		match = &match[len];
-	}
-	free(copy);
-}
-
-enum {
-	Identify,
-	Begin,
-	Set,
-	End,
-	Each,
-	Notify,
-	Increment,
-	Reset,
-	Badge,
-	QueriesLen,
-};
-
-static sqlite3_stmt *stmts[QueriesLen];
-static const char *Queries[QueriesLen] = {
-	[Identify] = SQL(
-		SELECT 1 FROM clients
-		WHERE host = :host AND port = :port
-		AND client = :client AND version = :version;
-	),
-
-	[Begin] = SQL(
-		DELETE FROM preferences WHERE client = :client;
-	),
-
-	[Set] = SQL(
-		INSERT INTO preferences (client, key, value)
-		VALUES (:client, :key, :value);
-	),
-
-	[End] = SQL(
-		INSERT INTO clients (host, port, client, version)
-		VALUES (:host, :port, :client, :version)
-		ON CONFLICT (host, port, client) DO
-		UPDATE SET version = :version
-		WHERE host = :host AND port = :port AND client = :client;
-	),
-
-	[Each] = SQL(
-		SELECT pushToken.value, pushEndpoint.value
-		FROM clients
-		JOIN preferences AS pushToken USING (client)
-		JOIN preferences AS pushEndpoint USING (client)
-		WHERE host = :host AND port = :port
-			AND pushToken.key = 'PUSH-TOKEN'
-			AND pushEndpoint.key = 'PUSH-ENDPOINT';
-	),
-
-	[Notify] = SQL(
-		WITH mentions AS (
-			SELECT DISTINCT client
-			FROM clients
-			JOIN preferences USING (client)
-			WHERE host = :host AND port = :port AND (
-				(key = 'MENTION-KEYWORD' AND keyword(:message, value)) OR
-				(key = 'MENTION-CHANNEL' AND value = :channel) OR
-				(key = 'MENTION-NICK' AND value = :nick) OR
-				:direct
-			)
-		),
-		ignores AS (
-			SELECT DISTINCT client
-			FROM clients
-			JOIN preferences USING (client)
-			WHERE host = :host AND port = :port AND (
-				(key = 'IGNORE-KEYWORD' AND keyword(:message, value)) OR
-				(key = 'IGNORE-CHANNEL' AND value = :channel) OR
-				(key = 'IGNORE-NICK' AND value = :nick)
-			)
-		),
-		matches AS (SELECT * FROM mentions EXCEPT SELECT * FROM ignores)
-		SELECT
-			pushToken.value,
-			pushEndpoint.value,
-			coalesce(showMessagePreview.value, 'true')
-		FROM clients
-		JOIN matches USING (client)
-		JOIN preferences AS pushToken USING (client)
-		JOIN preferences AS pushEndpoint USING (client)
-		LEFT JOIN preferences AS showMessagePreview
-			ON showMessagePreview.client = clients.client
-			AND showMessagePreview.key = 'SHOW-MESSAGE-PREVIEW'
-		WHERE pushToken.key = 'PUSH-TOKEN'
-			AND pushEndpoint.key = 'PUSH-ENDPOINT';
-	),
-
-	[Increment] = SQL(
-		INSERT INTO badges (host, port, count)
-		VALUES (:host, :port, 1)
-		ON CONFLICT (host, port) DO
-		UPDATE SET count = count + 1
-		WHERE host = :host AND port = :port;
-	),
-
-	[Reset] = SQL(
-		DELETE FROM badges WHERE host = :host AND port = :port;
-	),
-
-	[Badge] = SQL(
-		SELECT sum(count) FROM badges;
-	),
-};
-
-static int badgeCount(int op) {
-	dbVerbose(stmts[op]);
-	int result = sqlite3_step(stmts[op]);
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[op]);
-
-	dbVerbose(stmts[Badge]);
-	result = sqlite3_step(stmts[Badge]);
-	if (result != SQLITE_ROW) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	int badge = sqlite3_column_int(stmts[Badge], 0);
-	sqlite3_reset(stmts[Badge]);
-	return badge;
-}
-
-static void palaverIdentify(struct Message *msg) {
-	require(msg, false, 3);
-	dbBindText(stmts[Identify], ":client", msg->params[1]);
-	dbBindText(stmts[Identify], ":version", msg->params[2]);
-	dbVerbose(stmts[Identify]);
-	int result = sqlite3_step(stmts[Identify]);
-	if (result == SQLITE_DONE) {
-		format("PALAVER REQ\r\n");
-	} else if (result != SQLITE_ROW) {
-		errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	}
-	sqlite3_reset(stmts[Identify]);
-}
-
-static void palaverBegin(struct Message *msg) {
-	require(msg, false, 3);
-	dbBindText(stmts[Begin], ":client", msg->params[1]);
-	dbVerbose(stmts[Begin]);
-	int result = sqlite3_step(stmts[Begin]);
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[Begin]);
-	dbBindCopy(stmts[Set], ":client", msg->params[1]);
-	dbBindCopy(stmts[End], ":client", msg->params[1]);
-	dbBindCopy(stmts[End], ":version", msg->params[2]);
-}
-
-static void palaverSet(struct Message *msg) {
-	require(msg, false, 3);
-	dbBindText(stmts[Set], ":key", msg->params[1]);
-	dbBindText(stmts[Set], ":value", msg->params[2]);
-	dbVerbose(stmts[Set]);
-	int result = sqlite3_step(stmts[Set]);
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[Set]);
-}
-
-static void palaverEnd(struct Message *msg) {
-	(void)msg;
-	dbVerbose(stmts[End]);
-	int result = sqlite3_step(stmts[End]);
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[End]);
-}
-
-static void handlePalaver(struct Message *msg) {
-	require(msg, false, 1);
-	if (!strcmp(msg->params[0], "IDENTIFY")) {
-		palaverIdentify(msg);
-	} else if (!strcmp(msg->params[0], "BEGIN")) {
-		palaverBegin(msg);
-	} else if (!strcmp(msg->params[0], "SET")) {
-		palaverSet(msg);
-	} else if (!strcmp(msg->params[0], "ADD")) {
-		palaverSet(msg);
-	} else if (!strcmp(msg->params[0], "END")) {
-		palaverEnd(msg);
-	}
-}
-
-static void pushNotify(const char *endpoint, const char *token, char *body) {
-	CURLcode code = curl_easy_setopt(curl, CURLOPT_URL, endpoint);
-	if (code) {
-		warnx("%s: %s", endpoint, curlError);
-		return;
-	}
-
-	char auth[256];
-	struct curl_slist *list = NULL;
-	snprintf(auth, sizeof(auth), "Authorization: Bearer %s", token);
-	list = curl_slist_append(list, "Content-Type: application/json");
-	list = curl_slist_append(list, auth);
-	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
-
-	size_t len = strlen(body);
-	FILE *file = fmemopen(body, len, "r");
-	if (!file) err(EX_OSERR, "fmemopen");
-
-	curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)len);
-	curl_easy_setopt(curl, CURLOPT_READDATA, file);
-
-	if (verbose) fprintf(stderr, "%s\n", body);
-	code = curl_easy_perform(curl);
-	if (code) warnx("%s: %s", endpoint, curlError);
-
-	fclose(file);
-	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, NULL);
-	curl_slist_free_all(list);
-}
-
-static void handleReplyNowAway(struct Message *msg) {
-	(void)msg;
-	away = true;
-}
-
-static void handleReplyUnaway(struct Message *msg) {
-	(void)msg;
-	if (!away) return;
-	away = false;
-
-	char json[32];
-	snprintf(json, sizeof(json), "{\"badge\":%d}", badgeCount(Reset));
-
-	int result;
-	dbVerbose(stmts[Each]);
-	while (SQLITE_ROW == (result = sqlite3_step(stmts[Each]))) {
-		int i = 0;
-		const char *token = sqlite3_column_text(stmts[Each], i++);
-		const char *endpoint = sqlite3_column_text(stmts[Each], i++);
-		pushNotify(endpoint, token, json);
-	}
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[Each]);
-}
-
-static bool noPreview;
-static bool noPrivatePreview;
-
-static void jsonString(FILE *file, const char *str) {
-	fputc('"', file);
-	for (const char *ch = str; *ch; ++ch) {
-		if (iscntrl(*ch) || *ch == '"' || *ch == '\\') {
-			fprintf(file, "\\u%04x", (unsigned)*ch);
-		} else {
-			fputc(*ch, file);
-		}
-	}
-	fputc('"', file);
-}
-
-static char *jsonBody(int badge, struct Message *msg, bool preview) {
-	bool private = (msg->params[0][0] != '#');
-	if (private && noPrivatePreview) preview = false;
-	if (noPreview) preview = false;
-
-	char *buf;
-	size_t len;
-	FILE *file = open_memstream(&buf, &len);
-	if (!file) err(EX_OSERR, "open_memstream");
-
-	fprintf(file, "{\"badge\":%d", badge);
-	fprintf(file, ",\"sender\":");
-	jsonString(file, msg->nick);
-	if (!private) {
-		fprintf(file, ",\"channel\":");
-		jsonString(file, msg->params[0]);
-	}
-	if (preview) {
-		if (!strncmp(msg->params[1], "\1ACTION ", 8)) {
-			size_t len = strlen(msg->params[1]);
-			if (msg->params[1][len - 1] == '\1') msg->params[1][len - 1] = '\0';
-			fprintf(file, ",\"intent\":\"ACTION\",\"message\":");
-			jsonString(file, &msg->params[1][8]);
-		} else {
-			fprintf(file, ",\"message\":");
-			jsonString(file, msg->params[1]);
-		}
-	} else {
-		fprintf(file, ",\"private\":true");
-	}
-	fprintf(file, "}");
-
-	int error = fclose(file);
-	if (error) err(EX_IOERR, "fclose");
-
-	return buf;
-}
-
-static void handlePrivmsg(struct Message *msg) {
-	require(msg, true, 2);
-	if (!away) return;
-	if (!msg->time) return;
-	struct tm tm = {0};
-	strptime(msg->time, "%FT%T", &tm);
-	time_t then = timegm(&tm);
-	if (time(NULL) - then > 60) return;
-
-	dbBindText(stmts[Notify], ":nick", msg->nick);
-	dbBindText(stmts[Notify], ":channel", msg->params[0]);
-	dbBindText(stmts[Notify], ":message", msg->params[1]);
-	dbBindText(
-		stmts[Notify], ":direct", (!strcmp(msg->params[0], nick) ? "1" : NULL)
-	);
-	dbVerbose(stmts[Notify]);
-	int result;
-	int badge = 0;
-	while (SQLITE_ROW == (result = sqlite3_step(stmts[Notify]))) {
-		int i = 0;
-		const char *token = sqlite3_column_text(stmts[Notify], i++);
-		const char *endpoint = sqlite3_column_text(stmts[Notify], i++);
-		const char *preview = sqlite3_column_text(stmts[Notify], i++);
-
-		if (!badge) badge = badgeCount(Increment);
-		char *body = jsonBody(badge, msg, !strcmp(preview, "true"));
-		pushNotify(endpoint, token, body);
-		free(body);
-	}
-	if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
-	sqlite3_reset(stmts[Notify]);
-}
-
-static const struct {
-	const char *cmd;
-	Handler *fn;
-} Handlers[] = {
-	{ "001", handleReplyWelcome },
-	{ "302", handleReplyUserHost },
-	{ "305", handleReplyUnaway },
-	{ "306", handleReplyNowAway },
-	{ "CAP", handleCap },
-	{ "ERROR", handleError },
-	{ "NICK", handleNick },
-	{ "NOTICE", handlePrivmsg },
-	{ "PALAVER", handlePalaver },
-	{ "PING", handlePing },
-	{ "PRIVMSG", handlePrivmsg },
-};
-
-static void handle(struct Message *msg) {
-	if (!msg->cmd) return;
-	for (size_t i = 0; i < ARRAY_LEN(Handlers); ++i) {
-		if (strcmp(msg->cmd, Handlers[i].cmd)) continue;
-		Handlers[i].fn(msg);
-		break;
-	}
-}
-
-static void atExit(void) {
-	if (client) tls_close(client);
-	curl_easy_cleanup(curl);
-	for (size_t i = 0; i < QueriesLen; ++i) {
-		sqlite3_finalize(stmts[i]);
-	}
-	sqlite3_close(db);
-}
-
-static void quit(int sig) {
-	(void)sig;
-	format("QUIT\r\n");
-	atExit();
-	_exit(EX_OK);
-}
-
-int main(int argc, char *argv[]) {
-	bool insecure = false;
-	char *path = NULL;
-	const char *cert = NULL;
-	const char *priv = NULL;
-	const char *host = NULL;
-	const char *port = "6697";
-	const char *pass = NULL;
-	const char *user = "pounce-palaver";
-
-	for (int opt; 0 < (opt = getopt(argc, argv, "!NPc:d:k:p:su:vw:"));) {
-		switch (opt) {
-			break; case '!': insecure = true;
-			break; case 'N': noPreview = true;
-			break; case 'P': noPrivatePreview = true;
-			break; case 'c': cert = optarg;
-			break; case 'd': path = optarg;
-			break; case 'k': priv = optarg;
-			break; case 'p': port = optarg;
-			break; case 's': sensitive = true;
-			break; case 'u': user = optarg;
-			break; case 'v': verbose = true;
-			break; case 'w': pass = optarg;
-		}
-	}
-	if (optind == argc) errx(EX_USAGE, "host required");
-	host = argv[optind];
-
-	CURLcode code = curl_global_init(CURL_GLOBAL_ALL);
-	if (code) errx(EX_OSERR, "curl_global_init: %s", curl_easy_strerror(code));
-
-	curl = curl_easy_init();
-	if (!curl) errx(EX_SOFTWARE, "curl_easy_init");
-
-	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curlError);
-	curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
-	curl_easy_setopt(curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
-	curl_easy_setopt(curl, CURLOPT_VERBOSE, (verbose ? 1L : 0L));
-	curl_easy_setopt(curl, CURLOPT_POST, 1L);
-
-	dbFind(path);
-	atexit(atExit);
-
-	dbInit();
-	sqlite3_create_function(
-		db, "keyword", 2, SQLITE_UTF8 | SQLITE_DETERMINISTIC, NULL,
-		keyword, NULL, NULL
-	);
-	for (size_t i = 0; i < QueriesLen; ++i) {
-		int error = sqlite3_prepare_v3(
-			db, Queries[i], -1, SQLITE_PREPARE_PERSISTENT, &stmts[i], NULL
-		);
-		if (error) errx(EX_SOFTWARE, "%s: %s", sqlite3_errmsg(db), Queries[i]);
-		if (sqlite3_bind_parameter_index(stmts[i], ":host")) {
-			dbBindText(stmts[i], ":host", host);
-			dbBindText(stmts[i], ":port", port);
-		}
-	}
-
-	client = tls_client();
-	if (!client) errx(EX_SOFTWARE, "tls_client");
-
-	struct tls_config *config = tls_config_new();
-	if (!config) errx(EX_SOFTWARE, "tls_config_new");
-
-	if (insecure) {
-		tls_config_insecure_noverifycert(config);
-		tls_config_insecure_noverifyname(config);
-	}
-
-	int error;
-	if (cert) {
-		error = tls_config_set_keypair_file(config, cert, (priv ? priv : cert));
-		if (error) {
-			errx(
-				EX_SOFTWARE, "tls_config_set_keypair_file: %s",
-				tls_config_error(config)
-			);
-		}
-	}
-
-	error = tls_configure(client, config);
-	if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
-	tls_config_free(config);
-
-	error = tls_connect(client, host, port);
-	if (error) errx(EX_UNAVAILABLE, "tls_connect: %s", tls_error(client));
-
-	if (pass) format("PASS :%s\r\n", pass);
-	format(
-		"CAP REQ :server-time palaverapp.com causal.agency/passive\r\n"
-		"CAP END\r\n"
-		"NICK *\r\n"
-		"USER %s 0 * :pounce-palaver\r\n",
-		user
-	);
-
-	signal(SIGINT, quit);
-	signal(SIGTERM, quit);
-
-	char buf[8191 + 512];
-	size_t len = 0;
-	for (;;) {
-		ssize_t ret = tls_read(client, &buf[len], sizeof(buf) - len);
-		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
-		if (ret < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
-		if (!ret) errx(EX_PROTOCOL, "server closed connection");
-		len += ret;
-
-		char *line = buf;
-		for (;;) {
-			char *crlf = memmem(line, &buf[len] - line, "\r\n", 2);
-			if (!crlf) break;
-			crlf[0] = '\0';
-			struct Message msg = parse(line);
-			handle(&msg);
-			line = crlf + 2;
-		}
-		len -= line - buf;
-		memmove(buf, line, len);
-	}
-}