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Split source into several files

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Can't believe I have to do this.
This commit is contained in:
Curtis McEnroe 2018-08-04 13:35:29 -04:00
parent c6cd59f5c8
commit ccdeb0c556
No known key found for this signature in database
GPG Key ID: CEA2F97ADCFCD77C
8 changed files with 780 additions and 613 deletions
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1
.gitignore vendored
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@ -1,3 +1,4 @@
*.o
chat
chroot.tar
root

12
Makefile
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@ -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

638
chat.c
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@ -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;
printf("%s", prompt);
fflush(stdout);
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;
ssize_t len = getline(&line, &cap, stdin);
if (ferror(stdin)) err(EX_IOERR, "getline");
if (feof(stdin)) exit(EX_OK);
if (len < 2) continue;
size_t fgLen = strspn(str, "0123456789");
if (!fgLen) {
colorPair = -1;
colorAttr = A_NORMAL;
break;
line[len - 1] = '\0';
return line;
}
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
);
}
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
);
}
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(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);

49
chat.h Normal file
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@ -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);

129
client.c Normal file
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@ -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);
}

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/* 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;
}
}

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/* 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);
}

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/* 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);
}