Split source into several files

Can't believe I have to do this.

8 files changed, 780 insertions, 613 deletions

diff --git a/.gitignore b/.gitignore
index 91b7c57..716462e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+*.o
 chat
 chroot.tar
 root
diff --git a/Makefile b/Makefile
index 47c2ecb..b76ba97 100644
--- a/Makefile
+++ b/Makefile
@@ -3,11 +3,17 @@ CFLAGS += -Wall -Wextra -Wpedantic
 CFLAGS += -I/usr/local/include
 LDFLAGS += -L/usr/local/lib
 LDLIBS = -lcursesw -ltls
+OBJS = chat.o client.o handle.o input.o ui.o
 
 all: tags chat
 
-tags: *.c
-	ctags -w *.c
+chat: $(OBJS)
+	$(CC) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
+
+$(OBJS): chat.h
+
+tags: *.h *.c
+	ctags -w *.h *.c
 
 chroot.tar: chat
 	mkdir -p root
@@ -41,4 +47,4 @@ chroot.tar: chat
 	tar -c -f chroot.tar -C root bin etc home lib libexec usr
 
 clean:
-	rm -f tags chat chroot.tar
+	rm -f tags chat $(OBJS) chroot.tar
diff --git a/chat.c b/chat.c
index 239e390..39a0679 100644
--- a/chat.c
+++ b/chat.c
@@ -14,652 +14,70 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define _XOPEN_SOURCE_EXTENDED
+#define _WITH_GETLINE
 
-#include <curses.h>
 #include <err.h>
 #include <errno.h>
-#include <locale.h>
-#include <netdb.h>
-#include <netinet/in.h>
 #include <poll.h>
-#include <stdarg.h>
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/socket.h>
 #include <sysexits.h>
-#include <tls.h>
 #include <unistd.h>
-#include <wchar.h>
-#include <wctype.h>
 
-#define err(...) do { endwin(); err(__VA_ARGS__); } while (0)
-#define errx(...) do { endwin(); errx(__VA_ARGS__); } while (0)
+#include "chat.h"
 
-static wchar_t *wcssep(wchar_t **stringp, const wchar_t *delim) {
-	wchar_t *orig = *stringp;
-	if (!orig) return NULL;
-	size_t i = wcscspn(orig, delim);
-	*stringp = NULL;
-	if (orig[i]) {
-		orig[i] = '\0';
-		*stringp = &orig[i + 1];
-	}
-	return orig;
-}
-
-static void curse(void) {
-	setlocale(LC_CTYPE, "");
-	initscr();
-	keypad(stdscr, true);
-	start_color();
-	use_default_colors();
-	for (short pair = 0; pair < 077; ++pair) {
-		if (pair < 010) {
-			init_pair(1 + pair, pair, -1);
-		} else {
-			init_pair(1 + pair, pair & 007, (pair & 070) >> 3);
-		}
-	}
-}
-
-static const int TOPIC_COLS = 512;
-static const int CHAT_LINES = 100;
-static const int INPUT_COLS = 512;
-static struct {
-	WINDOW *topic;
-	WINDOW *chat;
-	WINDOW *input;
-} ui;
-
-static void uiInit(void) {
-	ui.topic = newpad(2, TOPIC_COLS);
-	mvwhline(ui.topic, 1, 0, ACS_HLINE, TOPIC_COLS);
-
-	ui.chat = newpad(CHAT_LINES, COLS);
-	wsetscrreg(ui.chat, 0, CHAT_LINES - 1);
-	scrollok(ui.chat, true);
-	wmove(ui.chat, CHAT_LINES - (LINES - 4) - 1, 0);
-
-	ui.input = newpad(2, INPUT_COLS);
-	mvwhline(ui.input, 0, 0, ACS_HLINE, INPUT_COLS);
-	wmove(ui.input, 1, 0);
-	cbreak();
-	noecho();
-}
-
-static void uiDraw(void) {
-	pnoutrefresh(ui.topic, 0, 0, 0, 0, 1, COLS - 1);
-	pnoutrefresh(
-		ui.chat,
-		CHAT_LINES - (LINES - 4), 0,
-		2, 0, LINES - 1, COLS - 1
-	);
-	pnoutrefresh(
-		ui.input,
-		0, 0,
-		LINES - 2, 0,
-		LINES - 1, COLS - 1
-	);
-	doupdate();
-}
-
-static const struct {
-	attr_t attr;
-	short color;
-} MIRC_COLORS[16] = {
-	{ A_BOLD,   COLOR_WHITE },   // white
-	{ A_NORMAL, COLOR_BLACK },   // black
-	{ A_NORMAL, COLOR_BLUE },    // blue
-	{ A_NORMAL, COLOR_GREEN },   // green
-	{ A_BOLD,   COLOR_RED },     // red
-	{ A_NORMAL, COLOR_RED },     // "brown"
-	{ A_NORMAL, COLOR_MAGENTA }, // magenta
-	{ A_NORMAL, COLOR_YELLOW },  // "orange"
-	{ A_BOLD,   COLOR_YELLOW },  // yellow
-	{ A_BOLD,   COLOR_GREEN },   // light green
-	{ A_NORMAL, COLOR_CYAN },    // cyan
-	{ A_BOLD,   COLOR_CYAN },    // light cyan
-	{ A_BOLD,   COLOR_BLUE },    // light blue
-	{ A_BOLD,   COLOR_MAGENTA }, // "pink"
-	{ A_BOLD,   COLOR_BLACK },   // grey
-	{ A_NORMAL, COLOR_WHITE },   // light grey
-};
-
-static void uiAdd(WINDOW *win, const char *str) {
-	attr_t attr = A_NORMAL;
-	short colorPair = -1;
-	attr_t colorAttr = A_NORMAL;
+char *prompt(const char *prompt) {
+	char *line = NULL;
+	size_t cap;
 	for (;;) {
-		size_t cc = strcspn(str, "\2\3\35\37");
-		wattr_set(win, attr | colorAttr, 1 + colorPair, NULL);
-		waddnstr(win, str, cc);
-		if (!str[cc]) break;
-
-		str = &str[cc];
-		switch (*str++) {
-			break; case '\2':  attr ^= A_BOLD;
-			break; case '\35': attr ^= A_ITALIC;
-			break; case '\37': attr ^= A_UNDERLINE;
-			break; case '\3': {
-				short fg = 0;
-				short bg = 0;
-
-				size_t fgLen = strspn(str, "0123456789");
-				if (!fgLen) {
-					colorPair = -1;
-					colorAttr = A_NORMAL;
-					break;
-				}
-
-				if (fgLen > 2) fgLen = 2;
-				for (size_t i = 0; i < fgLen; ++i) {
-					fg *= 10;
-					fg += str[i] - '0';
-				}
-				str = &str[fgLen];
-
-				size_t bgLen = (str[0] == ',') ? strspn(&str[1], "0123456789") : 0;
-				if (bgLen > 2) bgLen = 2;
-				for (size_t i = 0; i < bgLen; ++i) {
-					bg *= 10;
-					bg += str[1 + i] - '0';
-				}
-				if (bgLen) str = &str[1 + bgLen];
-
-				if (colorPair == -1) colorPair = 0;
-				colorPair = (colorPair & 070) | MIRC_COLORS[fg].color;
-				colorAttr = MIRC_COLORS[fg].attr;
-				if (bgLen) {
-					colorPair = (colorPair & 007) | (MIRC_COLORS[bg].color << 3);
-				}
-			}
-		}
-	}
-}
-
-static void uiTopic(const char *topic) {
-	wmove(ui.topic, 0, 0);
-	wclrtoeol(ui.topic);
-	uiAdd(ui.topic, topic);
-}
-static void uiChat(const char *line) {
-	waddch(ui.chat, '\n');
-	uiAdd(ui.chat, line);
-}
-static void uiFmt(const char *format, ...) {
-	char *buf;
-	va_list ap;
-	va_start(ap, format);
-	vasprintf(&buf, format, ap);
-	va_end(ap);
-	if (!buf) err(EX_OSERR, "vasprintf");
-	uiChat(buf);
-	free(buf);
-}
-
-static int color(const char *s) {
-	if (!s) return 0;
-	int x = 0;
-	for (; s[0]; ++s) {
-		x ^= s[0];
-	}
-	x &= 15;
-	return (x == 1) ? 0 : x;
-}
-
-static struct {
-	int sock;
-	struct tls *tls;
-	bool verbose;
-	char *nick;
-	char *user;
-	char *chan;
-} client;
-
-static void clientWrite(const char *ptr, size_t len) {
-	while (len) {
-		ssize_t ret = tls_write(client.tls, ptr, len);
-		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
-		if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client.tls));
-		ptr += ret;
-		len -= ret;
-	}
-}
-static void clientFmt(const char *format, ...) {
-	char *buf;
-	va_list ap;
-	va_start(ap, format);
-	int len = vasprintf(&buf, format, ap);
-	va_end(ap);
-	if (!buf) err(EX_OSERR, "vasprintf");
-	if (client.verbose) uiFmt("<<< %.*s", len - 2, buf);
-	clientWrite(buf, len);
-	free(buf);
-}
-
-typedef void (*Handler)(char *prefix, char *params);
-
-static char *prift(char **prefix) {
-	return strsep(prefix, "!@");
-}
-static char *shift(char **params) {
-	char *rest = *params;
-	if (!rest) errx(EX_PROTOCOL, "expected param");
-	if (rest[0] == ':') {
-		*params = NULL;
-		return &rest[1];
-	}
-	return strsep(params, " ");
-}
-
-static void handlePing(char *prefix, char *params) {
-	(void)prefix;
-	clientFmt("PONG %s\r\n", params);
-}
-
-static void handle432(char *prefix, char *params) {
-	(void)prefix;
-	shift(&params);
-	shift(&params);
-	char *mesg = shift(&params);
-	uiFmt("You can't use that name here");
-	uiFmt("Sheriff says, \"%s\"", mesg);
-	uiFmt("Type /nick <name> to choose a new one");
-}
-
-static void handle001(char *prefix, char *params) {
-	(void)prefix;
-	char *nick = shift(&params);
-	if (strcmp(nick, client.nick)) {
-		free(client.nick);
-		client.nick = strdup(nick);
-	}
-	clientFmt("JOIN %s\r\n", client.chan);
-}
-
-static void handleJoin(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *chan = shift(&params);
-	if (!strcmp(nick, client.nick) && strcmp(user, client.user)) {
-		free(client.user);
-		client.user = strdup(user);
-	}
-	uiFmt(
-		"\3%d%s\3 arrives in \3%d%s\3",
-		color(user), nick, color(chan), chan
-	);
-}
-static void handlePart(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *chan = shift(&params);
-	char *mesg = shift(&params);
-	uiFmt(
-		"\3%d%s\3 leaves \3%d%s\3, \"%s\"",
-		color(user), nick, color(chan), chan, mesg
-	);
-}
-static void handleQuit(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *mesg = shift(&params);
-	char *quot = (mesg[0] == '"') ? "" : "\"";
-	uiFmt(
-		"\3%d%s\3 leaves, %s%s%s",
-		color(user), nick, quot, mesg, quot
-	);
-}
-static void handleKick(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *chan = shift(&params);
-	char *kick = shift(&params);
-	char *mesg = shift(&params);
-	uiFmt(
-		"\3%d%s\3 kicks \3%d%s\3 out of \3%d%s\3, \"%s\"",
-		color(user), nick, color(kick), kick, color(chan), chan, mesg
-	);
-}
-
-static void handle332(char *prefix, char *params) {
-	(void)prefix;
-	shift(&params);
-	char *chan = shift(&params);
-	char *topic = shift(&params);
-	uiFmt(
-		"The sign in \3%d%s\3 reads, \"%s\"",
-		color(chan), chan, topic
-	);
-	uiTopic(topic);
-}
-static void handleTopic(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *chan = shift(&params);
-	char *topic = shift(&params);
-	uiFmt(
-		"\3%d%s\3 places a new sign in \3%d%s\3, \"%s\"",
-		color(user), nick, color(chan), chan, topic
-	);
-	uiTopic(topic);
-}
-
-static void handle366(char *prefix, char *params) {
-	(void)prefix;
-	shift(&params);
-	char *chan = shift(&params);
-	clientFmt("WHO %s\r\n", chan);
-}
-
-static char whoBuf[4096];
-static size_t whoLen;
-static void handle352(char *prefix, char *params) {
-	(void)prefix;
-	shift(&params);
-	shift(&params);
-	char *user = shift(&params);
-	shift(&params);
-	shift(&params);
-	char *nick = shift(&params);
-	whoLen += snprintf(
-		&whoBuf[whoLen], sizeof(whoBuf) - whoLen,
-		"%s\3%d%s\3",
-		(whoLen ? ", " : ""), color(user), nick
-	);
-}
-static void handle315(char *prefix, char *params) {
-	(void)prefix;
-	shift(&params);
-	char *chan = shift(&params);
-	whoLen = 0;
-	uiFmt(
-		"In \3%d%s\3 are %s",
-		color(chan), chan, whoBuf
-	);
-}
+		printf("%s", prompt);
+		fflush(stdout);
 
-static void handleNick(char *prefix, char *params) {
-	char *prev = prift(&prefix);
-	char *user = prift(&prefix);
-	char *next = shift(&params);
-	if (!strcmp(user, client.user)) {
-		free(client.nick);
-		client.nick = strdup(next);
-	}
-	uiFmt(
-		"\3%d%s\3 is now known as \3%d%s\3",
-		color(user), prev, color(user), next
-	);
-}
+		ssize_t len = getline(&line, &cap, stdin);
+		if (ferror(stdin)) err(EX_IOERR, "getline");
+		if (feof(stdin)) exit(EX_OK);
+		if (len < 2) continue;
 
-static void handlePrivmsg(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	shift(&params);
-	char *mesg = shift(&params);
-	if (mesg[0] == '\1') {
-		strsep(&mesg, " ");
-		uiFmt("* \3%d%s\3 %s", color(user), nick, strsep(&mesg, "\1"));
-	} else {
-		uiFmt("<\3%d%s\3> %s", color(user), nick, mesg);
+		line[len - 1] = '\0';
+		return line;
 	}
 }
-static void handleNotice(char *prefix, char *params) {
-	char *nick = prift(&prefix);
-	char *user = prift(&prefix);
-	char *chan = shift(&params);
-	char *mesg = shift(&params);
-	if (strcmp(client.chan, chan)) return;
-	uiFmt("-\3%d%s\3- %s", color(user), nick, mesg);
-}
-
-static const struct {
-	const char *command;
-	Handler handler;
-} HANDLERS[] = {
-	{ "001", handle001 },
-	{ "315", handle315 },
-	{ "332", handle332 },
-	{ "352", handle352 },
-	{ "366", handle366 },
-	{ "432", handle432 },
-	{ "433", handle432 },
-	{ "JOIN", handleJoin },
-	{ "KICK", handleKick },
-	{ "NICK", handleNick },
-	{ "NOTICE", handleNotice },
-	{ "PART", handlePart },
-	{ "PING", handlePing },
-	{ "PRIVMSG", handlePrivmsg },
-	{ "QUIT", handleQuit },
-	{ "TOPIC", handleTopic },
-};
-static const size_t HANDLERS_LEN = sizeof(HANDLERS) / sizeof(HANDLERS[0]);
-
-static void handle(char *line) {
-	char *prefix = NULL;
-	if (line[0] == ':') {
-		prefix = strsep(&line, " ") + 1;
-		if (!line) errx(EX_PROTOCOL, "eol after prefix");
-	}
-	char *command = strsep(&line, " ");
-	for (size_t i = 0; i < HANDLERS_LEN; ++i) {
-		if (strcmp(command, HANDLERS[i].command)) continue;
-		HANDLERS[i].handler(prefix, line);
-		break;
-	}
-}
-
-static void clientRead(void) {
-	static char buf[4096];
-	static size_t fill;
-
-	ssize_t size = tls_read(client.tls, buf + fill, sizeof(buf) - fill);
-	if (size < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client.tls));
-	if (!size) {
-		// FIXME: Always endwin
-		endwin();
-		exit(EX_OK);
-	}
-	fill += size;
-
-	char *end, *line = buf;
-	while ((end = strnstr(line, "\r\n", buf + fill - line))) {
-		end[0] = '\0';
-		if (client.verbose) uiFmt(">>> %s", line);
-		handle(line);
-		line = &end[2];
-	}
-
-	fill -= line - buf;
-	memmove(buf, line, fill);
-}
-
-static void privmsg(bool action, const wchar_t *mesg) {
-	char *line;
-	int send;
-	asprintf(
-		&line, ":%s!%s %nPRIVMSG %s :%s%ls%s",
-		client.nick, client.user, &send, client.chan,
-		(action ? "\1ACTION " : ""), mesg, (action ? "\1" : "")
-	);
-	if (!line) err(EX_OSERR, "asprintf");
-	clientFmt("%s\r\n", &line[send]);
-	handle(line);
-	free(line);
-}
-
-typedef void (*Command)(wchar_t *params);
-
-static void inputMe(wchar_t *params) {
-	privmsg(true, params ? params : L"");
-}
-
-static void inputNick(wchar_t *params) {
-	wchar_t *nick = wcssep(&params, L" ");
-	if (nick) {
-		clientFmt("NICK %ls\r\n", nick);
-	} else {
-		uiFmt("/nick requires a name");
-	}
-}
-
-static void inputQuit(wchar_t *params) {
-	if (params) {
-		clientFmt("QUIT :%ls\r\n", params);
-	} else {
-		clientFmt("QUIT :Goodbye\r\n");
-	}
-}
-
-static const struct {
-	const wchar_t *command;
-	Command handler;
-} COMMANDS[] = {
-	{ L"me", inputMe },
-	{ L"nick", inputNick },
-	{ L"quit", inputQuit },
-};
-static const size_t COMMANDS_LEN = sizeof(COMMANDS) / sizeof(COMMANDS[0]);
-
-static void input(wchar_t *input) {
-	if (input[0] != '/') {
-		privmsg(false, input);
-		return;
-	}
-	input++;
-	wchar_t *command = wcssep(&input, L" ");
-	for (size_t i = 0; i < COMMANDS_LEN; ++i) {
-		if (wcscmp(command, COMMANDS[i].command)) continue;
-		COMMANDS[i].handler(input);
-		return;
-	}
-	uiFmt("/%ls isn't a recognized command", command);
-}
-
-static void uiRead(void) {
-	static wchar_t buf[512];
-	static size_t len;
-
-	wint_t ch;
-	wget_wch(ui.input, &ch);
-	switch (ch) {
-		break; case '\b': case '\177': {
-			if (len) len--;
-		}
-		break; case '\n': {
-			if (!len) break;
-			buf[len] = '\0';
-			input(buf);
-			len = 0;
-		}
-		break; default: {
-			if (iswprint(ch)) buf[len++] = ch;
-		}
-	}
-	wmove(ui.input, 1, 0);
-	waddnwstr(ui.input, buf, len);
-	wclrtoeol(ui.input);
-}
-
-static void webirc(const char *pass) {
-	const char *ssh = getenv("SSH_CLIENT");
-	if (!ssh) return;
-	int len = strchrnul(ssh, ' ') - ssh;
-	clientFmt(
-		"WEBIRC %s %s %.*s %.*s\r\n",
-		pass, client.nick, len, ssh, len, ssh
-	);
-}
 
 int main(int argc, char *argv[]) {
-	int error;
-
-	const char *host = NULL;
-	const char *port = "6697";
+	char *host = NULL;
+	char *port = "6697";
 	const char *webPass = NULL;
 
 	int opt;
 	while (0 < (opt = getopt(argc, argv, "h:j:n:p:vw:"))) {
 		switch (opt) {
-			break; case 'h': host = optarg;
-			break; case 'j': client.chan = strdup(optarg);
-			break; case 'n': client.nick = strdup(optarg);
-			break; case 'p': port = optarg;
-			break; case 'v': client.verbose = true;
+			break; case 'h': host = strdup(optarg);
+			break; case 'j': chat.chan = strdup(optarg);
+			break; case 'n': chat.nick = strdup(optarg);
+			break; case 'p': port = strdup(optarg);
+			break; case 'v': chat.verbose = true;
 			break; case 'w': webPass = optarg;
 			break; default:  return EX_USAGE;
 		}
 	}
 
-	curse();
+	if (!host) host = prompt("Host: ");
+	if (!chat.chan) chat.chan = prompt("Join: ");
+	if (!chat.nick) chat.nick = prompt("Name: ");
+	chat.user = strdup(chat.nick);
 
-	char hostBuf[64] = {0};
-	if (!host) {
-		addstr("Host: ");
-		getnstr(hostBuf, sizeof(hostBuf) - 1);
-		host = hostBuf;
-	}
-	if (!client.chan) {
-		char buf[64] = {0};
-		addstr("Join: ");
-		getnstr(buf, sizeof(buf) - 1);
-		client.chan = strdup(buf);
-	}
-	if (!client.nick) {
-		char buf[16] = {0};
-		addstr("Name: ");
-		getnstr(buf, sizeof(buf) - 1);
-		client.nick = strdup(buf);
-	}
-	client.user = strdup(client.nick);
-
-	erase();
 	uiInit();
 	uiChat("Traveling...");
 	uiDraw();
 
-	struct tls_config *config = tls_config_new();
-	error = tls_config_set_ciphers(config, "compat");
-	if (error) errx(EX_SOFTWARE, "tls_config: %s", tls_config_error(config));
-
-	client.tls = tls_client();
-	if (!client.tls) errx(EX_SOFTWARE, "tls_client");
-
-	error = tls_configure(client.tls, config);
-	if (error) errx(EX_SOFTWARE, "tls_configure");
-	tls_config_free(config);
-
-	struct addrinfo *ai;
-	struct addrinfo hints = {
-		.ai_family = AF_UNSPEC,
-		.ai_socktype = SOCK_STREAM,
-		.ai_protocol = IPPROTO_TCP,
-	};
-	error = getaddrinfo(host, port, &hints, &ai);
-	if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error));
-
-	client.sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-	if (client.sock < 0) err(EX_OSERR, "socket");
-
-	error = connect(client.sock, ai->ai_addr, ai->ai_addrlen);
-	if (error) err(EX_UNAVAILABLE, "connect");
-	freeaddrinfo(ai);
-
-	error = tls_connect_socket(client.tls, client.sock, host);
-	if (error) err(EX_PROTOCOL, "tls_connect");
-
-	if (webPass) webirc(webPass);
-	clientFmt("NICK %s\r\n", client.nick);
-	clientFmt("USER %s 0 * :%s\r\n", client.user, client.nick);
+	int sock = clientConnect(host, port, webPass);
+	free(host);
+	free(port);
 
 	struct pollfd fds[2] = {
 		{ .fd = STDIN_FILENO, .events = POLLIN },
-		{ .fd = client.sock,  .events = POLLIN },
+		{ .fd = sock, .events = POLLIN },
 	};
 	for (;;) {
 		int nfds = poll(fds, 2, -1);
diff --git a/chat.h b/chat.h
new file mode 100644
index 0000000..4c1cff4
--- /dev/null
+++ b/chat.h
@@ -0,0 +1,49 @@
+/* Copyright (C) 2018  Curtis 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 <stdbool.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+#define err(...) do { uiHide(); err(__VA_ARGS__); } while (0)
+#define errx(...) do { uiHide(); errx(__VA_ARGS__); } while (0)
+
+struct {
+	bool verbose;
+	char *nick;
+	char *user;
+	char *chan;
+} chat;
+
+int clientConnect(const char *host, const char *port, const char *webPass);
+void clientRead(void);
+void clientWrite(const char *ptr, size_t len);
+
+__attribute__((format(printf, 1, 2)))
+void clientFmt(const char *format, ...);
+
+void uiInit(void);
+void uiHide(void);
+void uiDraw(void);
+void uiRead(void);
+void uiTopic(const char *topic);
+void uiChat(const char *line);
+
+__attribute__((format(printf, 1, 2)))
+void uiFmt(const char *format, ...);
+
+void handle(char *line);
+void input(wchar_t *line);
diff --git a/client.c b/client.c
new file mode 100644
index 0000000..64f14cf
--- /dev/null
+++ b/client.c
@@ -0,0 +1,129 @@
+/* Copyright (C) 2018  Curtis 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 <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <tls.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "chat.h"
+
+static struct tls *client;
+
+static void webirc(const char *pass) {
+	const char *ssh = getenv("SSH_CLIENT");
+	if (!ssh) return;
+	int len = strlen(ssh);
+	const char *sp = strchr(ssh, ' ');
+	if (sp) len = sp - ssh;
+	clientFmt(
+		"WEBIRC %s %s %.*s %.*s\r\n",
+		pass, chat.user, len, ssh, len, ssh
+	);
+}
+
+int clientConnect(const char *host, const char *port, const char *webPass) {
+	int error;
+
+	struct tls_config *config = tls_config_new();
+	error = tls_config_set_ciphers(config, "compat");
+	if (error) errx(EX_SOFTWARE, "tls_config: %s", tls_config_error(config));
+
+	client = tls_client();
+	if (!client) errx(EX_SOFTWARE, "tls_client");
+
+	error = tls_configure(client, config);
+	if (error) errx(EX_SOFTWARE, "tls_configure");
+	tls_config_free(config);
+
+	struct addrinfo *ai;
+	struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_socktype = SOCK_STREAM,
+		.ai_protocol = IPPROTO_TCP,
+	};
+	error = getaddrinfo(host, port, &hints, &ai);
+	if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error));
+
+	int sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+	if (sock < 0) err(EX_OSERR, "socket");
+
+	error = connect(sock, ai->ai_addr, ai->ai_addrlen);
+	if (error) err(EX_UNAVAILABLE, "connect");
+	freeaddrinfo(ai);
+
+	error = tls_connect_socket(client, sock, host);
+	if (error) err(EX_PROTOCOL, "tls_connect");
+
+	if (webPass) webirc(webPass);
+	clientFmt("NICK %s\r\n", chat.nick);
+	clientFmt("USER %s 0 * :%s\r\n", chat.user, chat.nick);
+
+	return sock;
+}
+
+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;
+	}
+}
+
+void clientFmt(const char *format, ...) {
+	char *buf;
+	va_list ap;
+	va_start(ap, format);
+	int len = vasprintf(&buf, format, ap);
+	va_end(ap);
+	if (!buf) err(EX_OSERR, "vasprintf");
+	if (chat.verbose) uiFmt("<<< %.*s", len - 2, buf);
+	clientWrite(buf, len);
+	free(buf);
+}
+
+void clientRead(void) {
+	static char buf[4096];
+	static size_t len;
+
+	ssize_t read = tls_read(client, &buf[len], sizeof(buf) - len);
+	if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
+	if (!read) {
+		uiHide();
+		exit(EX_OK);
+	}
+	len += read;
+
+	char *crlf, *line = buf;
+	while ((crlf = strnstr(line, "\r\n", &buf[len] - line))) {
+		crlf[0] = '\0';
+		if (chat.verbose) uiFmt(">>> %s", line);
+		handle(line);
+		line = &crlf[2];
+	}
+
+	len -= line - buf;
+	memmove(buf, line, len);
+}
diff --git a/handle.c b/handle.c
new file mode 100644
index 0000000..ba3cb00
--- /dev/null
+++ b/handle.c
@@ -0,0 +1,255 @@
+/* Copyright (C) 2018  Curtis 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+#include "chat.h"
+
+static int color(const char *s) {
+	if (!s) return 0;
+	int x = 0;
+	for (; s[0]; ++s) {
+		x ^= s[0];
+	}
+	x &= 15;
+	return (x == 1) ? 0 : x;
+}
+
+typedef void (*Handler)(char *prefix, char *params);
+
+static char *prift(char **prefix) {
+	return strsep(prefix, "!@");
+}
+
+static char *shift(char **params) {
+	char *rest = *params;
+	if (!rest) errx(EX_PROTOCOL, "unexpected eol");
+	if (rest[0] == ':') {
+		*params = NULL;
+		return &rest[1];
+	}
+	return strsep(params, " ");
+}
+
+static void handlePing(char *prefix, char *params) {
+	(void)prefix;
+	clientFmt("PONG %s\r\n", params);
+}
+
+static void handle432(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	shift(&params);
+	char *mesg = shift(&params);
+	uiChat("You can't use that name here");
+	uiFmt("Sheriff says, \"%s\"", mesg);
+	uiChat("Type /nick <name> to choose a new one");
+}
+
+static void handle001(char *prefix, char *params) {
+	(void)prefix;
+	char *nick = shift(&params);
+	if (strcmp(nick, chat.nick)) {
+		free(chat.nick);
+		chat.nick = strdup(nick);
+	}
+	clientFmt("JOIN %s\r\n", chat.chan);
+}
+
+static void handleJoin(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	if (!strcmp(nick, chat.nick) && strcmp(user, chat.user)) {
+		free(chat.user);
+		chat.user = strdup(user);
+	}
+	uiFmt(
+		"\3%d%s\3 arrives in \3%d%s\3",
+		color(user), nick, color(chan), chan
+	);
+}
+
+static void handlePart(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *mesg = shift(&params);
+	uiFmt(
+		"\3%d%s\3 leaves \3%d%s\3, \"%s\"",
+		color(user), nick, color(chan), chan, mesg
+	);
+}
+
+static void handleQuit(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *mesg = shift(&params);
+	char *quot = (mesg[0] == '"') ? "" : "\"";
+	uiFmt(
+		"\3%d%s\3 leaves, %s%s%s",
+		color(user), nick, quot, mesg, quot
+	);
+}
+
+static void handleKick(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *kick = shift(&params);
+	char *mesg = shift(&params);
+	uiFmt(
+		"\3%d%s\3 kicks \3%d%s\3 out of \3%d%s\3, \"%s\"",
+		color(user), nick, color(kick), kick, color(chan), chan, mesg
+	);
+}
+
+static void handle332(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	char *topic = shift(&params);
+	uiFmt(
+		"The sign in \3%d%s\3 reads, \"%s\"",
+		color(chan), chan, topic
+	);
+	uiTopic(topic);
+}
+
+static void handleTopic(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *topic = shift(&params);
+	uiFmt(
+		"\3%d%s\3 places a new sign in \3%d%s\3, \"%s\"",
+		color(user), nick, color(chan), chan, topic
+	);
+	uiTopic(topic);
+}
+
+static void handle366(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	clientFmt("WHO %s\r\n", chan);
+}
+
+static char whoBuf[4096];
+static size_t whoLen;
+
+static void handle352(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	shift(&params);
+	char *user = shift(&params);
+	shift(&params);
+	shift(&params);
+	char *nick = shift(&params);
+	whoLen += snprintf(
+		&whoBuf[whoLen], sizeof(whoBuf) - whoLen,
+		"%s\3%d%s\3",
+		(whoLen ? ", " : ""), color(user), nick
+	);
+}
+
+static void handle315(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	whoLen = 0;
+	uiFmt(
+		"In \3%d%s\3 are %s",
+		color(chan), chan, whoBuf
+	);
+}
+
+static void handleNick(char *prefix, char *params) {
+	char *prev = prift(&prefix);
+	char *user = prift(&prefix);
+	char *next = shift(&params);
+	if (!strcmp(user, chat.user)) {
+		free(chat.nick);
+		chat.nick = strdup(next);
+	}
+	uiFmt(
+		"\3%d%s\3 is now known as \3%d%s\3",
+		color(user), prev, color(user), next
+	);
+}
+
+static void handlePrivmsg(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	shift(&params);
+	char *mesg = shift(&params);
+	if (mesg[0] == '\1') {
+		strsep(&mesg, " ");
+		uiFmt("* \3%d%s\3 %s", color(user), nick, strsep(&mesg, "\1"));
+	} else {
+		uiFmt("<\3%d%s\3> %s", color(user), nick, mesg);
+	}
+}
+
+static void handleNotice(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *mesg = shift(&params);
+	if (strcmp(chat.chan, chan)) return;
+	uiFmt("-\3%d%s\3- %s", color(user), nick, mesg);
+}
+
+static const struct {
+	const char *command;
+	Handler handler;
+} HANDLERS[] = {
+	{ "001", handle001 },
+	{ "315", handle315 },
+	{ "332", handle332 },
+	{ "352", handle352 },
+	{ "366", handle366 },
+	{ "432", handle432 },
+	{ "433", handle432 },
+	{ "JOIN", handleJoin },
+	{ "KICK", handleKick },
+	{ "NICK", handleNick },
+	{ "NOTICE", handleNotice },
+	{ "PART", handlePart },
+	{ "PING", handlePing },
+	{ "PRIVMSG", handlePrivmsg },
+	{ "QUIT", handleQuit },
+	{ "TOPIC", handleTopic },
+};
+static const size_t HANDLERS_LEN = sizeof(HANDLERS) / sizeof(HANDLERS[0]);
+
+void handle(char *line) {
+	char *prefix = NULL;
+	if (line[0] == ':') {
+		prefix = strsep(&line, " ") + 1;
+		if (!line) errx(EX_PROTOCOL, "unexpected eol");
+	}
+	char *command = strsep(&line, " ");
+	for (size_t i = 0; i < HANDLERS_LEN; ++i) {
+		if (strcmp(command, HANDLERS[i].command)) continue;
+		HANDLERS[i].handler(prefix, line);
+		break;
+	}
+}
diff --git a/input.c b/input.c
new file mode 100644
index 0000000..6d875f0
--- /dev/null
+++ b/input.c
@@ -0,0 +1,98 @@
+/* Copyright (C) 2018  Curtis 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 <wchar.h>
+
+#include "chat.h"
+
+static wchar_t *wcssep(wchar_t **stringp, const wchar_t *delim) {
+	wchar_t *orig = *stringp;
+	if (!orig) return NULL;
+	size_t i = wcscspn(orig, delim);
+	*stringp = NULL;
+	if (orig[i]) {
+		orig[i] = '\0';
+		*stringp = &orig[i + 1];
+	}
+	return orig;
+}
+
+static void privmsg(bool action, const wchar_t *mesg) {
+	char *line;
+	int send;
+	asprintf(
+		&line, ":%s!%s %nPRIVMSG %s :%s%ls%s",
+		chat.nick, chat.user, &send, chat.chan,
+		(action ? "\1ACTION " : ""), mesg, (action ? "\1" : "")
+	);
+	if (!line) err(EX_OSERR, "asprintf");
+	clientFmt("%s\r\n", &line[send]);
+	handle(line);
+	free(line);
+}
+
+typedef void (*Handler)(wchar_t *params);
+
+static void inputMe(wchar_t *params) {
+	privmsg(true, params ? params : L"");
+}
+
+static void inputNick(wchar_t *params) {
+	wchar_t *nick = wcssep(&params, L" ");
+	if (nick) {
+		clientFmt("NICK %ls\r\n", nick);
+	} else {
+		uiChat("/nick requires a name");
+	}
+}
+
+static void inputQuit(wchar_t *params) {
+	if (params) {
+		clientFmt("QUIT :%ls\r\n", params);
+	} else {
+		clientFmt("QUIT :Goodbye\r\n");
+	}
+}
+
+static const struct {
+	const wchar_t *command;
+	Handler handler;
+} COMMANDS[] = {
+	{ L"me", inputMe },
+	{ L"nick", inputNick },
+	{ L"quit", inputQuit },
+};
+static const size_t COMMANDS_LEN = sizeof(COMMANDS) / sizeof(COMMANDS[0]);
+
+void input(wchar_t *input) {
+	if (input[0] != '/') {
+		privmsg(false, input);
+		return;
+	}
+	input++;
+	wchar_t *command = wcssep(&input, L" ");
+	for (size_t i = 0; i < COMMANDS_LEN; ++i) {
+		if (wcscmp(command, COMMANDS[i].command)) continue;
+		COMMANDS[i].handler(input);
+		return;
+	}
+	uiFmt("/%ls isn't a recognized command", command);
+}
diff --git a/ui.c b/ui.c
new file mode 100644
index 0000000..d0f56f0
--- /dev/null
+++ b/ui.c
@@ -0,0 +1,211 @@
+/* Copyright (C) 2018  Curtis 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/>.
+ */
+
+#define _XOPEN_SOURCE_EXTENDED
+
+#include <curses.h>
+#include <err.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include "chat.h"
+
+static const int TOPIC_COLS = 512;
+static const int CHAT_LINES = 100;
+static const int INPUT_COLS = 512;
+
+static struct {
+	WINDOW *topic;
+	WINDOW *chat;
+	WINDOW *input;
+} ui;
+
+void uiInit(void) {
+	setlocale(LC_CTYPE, "");
+	initscr();
+	cbreak();
+	noecho();
+	keypad(stdscr, true);
+
+	start_color();
+	use_default_colors();
+	for (short pair = 0; pair < 077; ++pair) {
+		if (pair < 010) {
+			init_pair(1 + pair, pair, -1);
+		} else {
+			init_pair(1 + pair, pair & 007, (pair & 070) >> 3);
+		}
+	}
+
+	ui.topic = newpad(2, TOPIC_COLS);
+	mvwhline(ui.topic, 1, 0, ACS_HLINE, TOPIC_COLS);
+
+	ui.chat = newpad(CHAT_LINES, COLS);
+	wsetscrreg(ui.chat, 0, CHAT_LINES - 1);
+	scrollok(ui.chat, true);
+	wmove(ui.chat, CHAT_LINES - (LINES - 4) - 1, 0);
+
+	ui.input = newpad(2, INPUT_COLS);
+	mvwhline(ui.input, 0, 0, ACS_HLINE, INPUT_COLS);
+	wmove(ui.input, 1, 0);
+}
+
+void uiHide(void) {
+	endwin();
+}
+
+void uiDraw(void) {
+	pnoutrefresh(ui.topic, 0, 0, 0, 0, 1, COLS - 1);
+	pnoutrefresh(
+		ui.chat,
+		CHAT_LINES - (LINES - 4), 0,
+		2, 0, LINES - 1, COLS - 1
+	);
+	pnoutrefresh(
+		ui.input,
+		0, 0,
+		LINES - 2, 0,
+		LINES - 1, COLS - 1
+	);
+	doupdate();
+}
+
+static const struct {
+	attr_t attr;
+	short color;
+} MIRC_COLORS[16] = {
+	{ A_BOLD,   COLOR_WHITE },   // white
+	{ A_NORMAL, COLOR_BLACK },   // black
+	{ A_NORMAL, COLOR_BLUE },    // blue
+	{ A_NORMAL, COLOR_GREEN },   // green
+	{ A_BOLD,   COLOR_RED },     // red
+	{ A_NORMAL, COLOR_RED },     // "brown"
+	{ A_NORMAL, COLOR_MAGENTA }, // magenta
+	{ A_NORMAL, COLOR_YELLOW },  // "orange"
+	{ A_BOLD,   COLOR_YELLOW },  // yellow
+	{ A_BOLD,   COLOR_GREEN },   // light green
+	{ A_NORMAL, COLOR_CYAN },    // cyan
+	{ A_BOLD,   COLOR_CYAN },    // light cyan
+	{ A_BOLD,   COLOR_BLUE },    // light blue
+	{ A_BOLD,   COLOR_MAGENTA }, // "pink"
+	{ A_BOLD,   COLOR_BLACK },   // grey
+	{ A_NORMAL, COLOR_WHITE },   // light grey
+};
+
+static void uiAdd(WINDOW *win, const char *str) {
+	attr_t attr = A_NORMAL;
+	short colorPair = -1;
+	attr_t colorAttr = A_NORMAL;
+	for (;;) {
+		size_t cc = strcspn(str, "\2\3\35\37");
+		wattr_set(win, attr | colorAttr, 1 + colorPair, NULL);
+		waddnstr(win, str, cc);
+		if (!str[cc]) break;
+
+		str = &str[cc];
+		switch (*str++) {
+			break; case '\2':  attr ^= A_BOLD;
+			break; case '\35': attr ^= A_ITALIC;
+			break; case '\37': attr ^= A_UNDERLINE;
+			break; case '\3': {
+				short fg = 0;
+				short bg = 0;
+
+				size_t fgLen = strspn(str, "0123456789");
+				if (!fgLen) {
+					colorPair = -1;
+					colorAttr = A_NORMAL;
+					break;
+				}
+
+				if (fgLen > 2) fgLen = 2;
+				for (size_t i = 0; i < fgLen; ++i) {
+					fg *= 10;
+					fg += str[i] - '0';
+				}
+				str = &str[fgLen];
+
+				size_t bgLen = (str[0] == ',') ? strspn(&str[1], "0123456789") : 0;
+				if (bgLen > 2) bgLen = 2;
+				for (size_t i = 0; i < bgLen; ++i) {
+					bg *= 10;
+					bg += str[1 + i] - '0';
+				}
+				if (bgLen) str = &str[1 + bgLen];
+
+				if (colorPair == -1) colorPair = 0;
+				colorPair = (colorPair & 070) | MIRC_COLORS[fg].color;
+				colorAttr = MIRC_COLORS[fg].attr;
+				if (bgLen) {
+					colorPair = (colorPair & 007) | (MIRC_COLORS[bg].color << 3);
+				}
+			}
+		}
+	}
+}
+
+void uiTopic(const char *topic) {
+	wmove(ui.topic, 0, 0);
+	wclrtoeol(ui.topic);
+	uiAdd(ui.topic, topic);
+}
+
+void uiChat(const char *line) {
+	waddch(ui.chat, '\n');
+	uiAdd(ui.chat, line);
+}
+
+void uiFmt(const char *format, ...) {
+	char *buf;
+	va_list ap;
+	va_start(ap, format);
+	vasprintf(&buf, format, ap);
+	va_end(ap);
+	if (!buf) err(EX_OSERR, "vasprintf");
+	uiChat(buf);
+	free(buf);
+}
+
+void uiRead(void) {
+	static wchar_t buf[512];
+	static size_t len;
+
+	wint_t ch;
+	wget_wch(ui.input, &ch);
+	switch (ch) {
+		break; case '\b': case '\177': {
+			if (len) len--;
+		}
+		break; case '\n': {
+			if (!len) break;
+			buf[len] = '\0';
+			input(buf);
+			len = 0;
+		}
+		break; default: {
+			if (iswprint(ch)) buf[len++] = ch;
+		}
+	}
+	wmove(ui.input, 1, 0);
+	waddnwstr(ui.input, buf, len);
+	wclrtoeol(ui.input);
+}