734 lines
19 KiB
C
734 lines
19 KiB
C
/* Copyright (C) 2020 June McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* Additional permission under GNU GPL version 3 section 7:
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*
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* If you modify this Program, or any covered work, by linking or
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* combining it with OpenSSL (or a modified version of that library),
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* containing parts covered by the terms of the OpenSSL License and the
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* original SSLeay license, the licensors of this Program grant you
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* additional permission to convey the resulting work. Corresponding
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* Source for a non-source form of such a combination shall include the
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* source code for the parts of OpenSSL used as well as that of the
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* covered work.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "chat.h"
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typedef void Command(uint id, char *params);
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static void commandDebug(uint id, char *params) {
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(void)id;
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(void)params;
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self.debug ^= true;
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uiFormat(
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Debug, Warm, NULL,
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"\3%dDebug is %s", Gray, (self.debug ? "on" : "off")
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);
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}
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static void commandQuote(uint id, char *params) {
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(void)id;
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if (params) ircFormat("%s\r\n", params);
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}
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static void echoMessage(char *cmd, uint id, char *params) {
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if (!params) return;
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ircFormat("%s %s :%s\r\n", cmd, idNames[id], params);
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struct Message msg = {
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.nick = self.nick,
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.user = self.user,
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.cmd = cmd,
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.params[0] = idNames[id],
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.params[1] = params,
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};
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handle(&msg);
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}
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static int splitChunk(const char *cmd, uint id) {
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int overhead = snprintf(
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NULL, 0, ":%s!%*s@%*s %s %s :\r\n",
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self.nick,
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(self.user ? 0 : network.userLen), (self.user ?: "*"),
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(self.host ? 0 : network.hostLen), (self.host ?: "*"),
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cmd, idNames[id]
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);
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assert(overhead > 0 && overhead < 512);
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return 512 - overhead;
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}
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static int splitLen(int chunk, const char *params) {
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int len = 0;
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size_t cap = 1 + strlen(params);
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for (int n = 0; params[len] != '\n' && len + n <= chunk; len += n) {
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n = mblen(¶ms[len], cap - len);
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if (n < 0) {
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n = 1;
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mblen(NULL, 0);
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}
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if (!n) break;
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}
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return len;
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}
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static void splitMessage(char *cmd, uint id, char *params) {
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if (!params) return;
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int chunk = splitChunk(cmd, id);
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if (strlen(params) <= (size_t)chunk && !strchr(params, '\n')) {
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echoMessage(cmd, id, params);
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return;
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}
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while (*params) {
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int len = splitLen(chunk, params);
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char ch = params[len];
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params[len] = '\0';
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echoMessage(cmd, id, params);
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params[len] = ch;
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params += len;
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if (ch == '\n') params++;
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}
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}
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static void commandPrivmsg(uint id, char *params) {
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splitMessage("PRIVMSG", id, params);
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}
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static void commandNotice(uint id, char *params) {
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splitMessage("NOTICE", id, params);
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}
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static void commandMe(uint id, char *params) {
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char buf[512];
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if (!params) params = "";
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int chunk = splitChunk("PRIVMSG \1ACTION\1", id);
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if (strlen(params) <= (size_t)chunk && !strchr(params, '\n')) {
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snprintf(buf, sizeof(buf), "\1ACTION %s\1", params);
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echoMessage("PRIVMSG", id, buf);
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return;
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}
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while (*params) {
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int len = splitLen(chunk, params);
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snprintf(buf, sizeof(buf), "\1ACTION %.*s\1", len, params);
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echoMessage("PRIVMSG", id, buf);
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params += len;
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if (*params == '\n') params++;
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}
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}
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static void commandMsg(uint id, char *params) {
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if (!params) return;
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char *nick = strsep(¶ms, " ");
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uint msg = idFor(nick);
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if (idColors[msg] == Default) {
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idColors[msg] = cacheGet(id, nick)->color;
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}
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if (params) {
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splitMessage("PRIVMSG", msg, params);
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} else {
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windowShow(windowFor(msg));
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}
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}
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static void commandJoin(uint id, char *params) {
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if (!params && id == Network) params = self.invited;
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if (!params) params = idNames[id];
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uint count = 1;
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for (char *ch = params; *ch && *ch != ' '; ++ch) {
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if (*ch == ',') count++;
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}
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ircFormat("JOIN %s\r\n", params);
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replies[ReplyJoin] += count;
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replies[ReplyTopic] += count;
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replies[ReplyNames] += count;
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}
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static void commandPart(uint id, char *params) {
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if (params) {
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ircFormat("PART %s :%s\r\n", idNames[id], params);
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} else {
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ircFormat("PART %s\r\n", idNames[id]);
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}
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}
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static void commandQuit(uint id, char *params) {
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(void)id;
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set(&self.quit, (params ?: "nyaa~"));
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}
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static void commandNick(uint id, char *params) {
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(void)id;
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if (params) {
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ircFormat("NICK :%s\r\n", params);
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} else {
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uiFormat(
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Network, Warm, NULL, "You are \3%02d%s",
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self.color, self.nick
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);
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}
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}
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static void commandAway(uint id, char *params) {
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(void)id;
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if (params) {
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ircFormat("AWAY :%s\r\n", params);
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} else {
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ircFormat("AWAY\r\n");
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}
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replies[ReplyAway]++;
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}
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static void commandSetname(uint id, char *params) {
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(void)id;
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if (!params) return;
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ircFormat("SETNAME :%s\r\n", params);
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}
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static void commandTopic(uint id, char *params) {
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if (params) {
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ircFormat("TOPIC %s :%s\r\n", idNames[id], params);
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} else {
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ircFormat("TOPIC %s\r\n", idNames[id]);
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replies[ReplyTopic]++;
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}
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}
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static void commandNames(uint id, char *params) {
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(void)params;
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ircFormat("NAMES %s\r\n", idNames[id]);
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replies[ReplyNames]++;
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}
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static void commandOps(uint id, char *params) {
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(void)params;
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char buf[1024];
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char *ptr = buf, *end = &buf[sizeof(buf)];
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ptr = seprintf(
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ptr, end, "The council of \3%02d%s\3 are ",
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idColors[id], idNames[id]
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);
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bool first = true;
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struct Cursor curs = {0};
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for (const char *nick; (nick = cacheNextKey(&curs, id));) {
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char prefix = bitPrefix(curs.entry->prefixBits);
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if (!prefix || prefix == '+') continue;
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ptr = seprintf(
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ptr, end, "%s\3%02d%c%s\3",
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(first ? "" : ", "), curs.entry->color, prefix, nick
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);
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first = false;
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}
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if (first) {
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uiFormat(
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id, Warm, NULL, "\3%02d%s\3 is a lawless wasteland",
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idColors[id], idNames[id]
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);
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} else {
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uiWrite(id, Warm, NULL, buf);
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}
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}
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static void commandInvite(uint id, char *params) {
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if (!params) return;
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char *nick = strsep(¶ms, " ");
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ircFormat("INVITE %s %s\r\n", nick, idNames[id]);
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}
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static void commandKick(uint id, char *params) {
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if (!params) return;
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char *nick = strsep(¶ms, " ");
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if (params) {
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ircFormat("KICK %s %s :%s\r\n", idNames[id], nick, params);
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} else {
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ircFormat("KICK %s %s\r\n", idNames[id], nick);
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}
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}
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static void commandMode(uint id, char *params) {
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if (id == Network) {
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if (params) {
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ircFormat("MODE %s %s\r\n", self.nick, params);
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} else {
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ircFormat("MODE %s\r\n", self.nick);
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replies[ReplyMode]++;
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}
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} else {
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if (params) {
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if (!params[1] || (params[0] == '+' && !params[2])) {
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char m = (params[0] == '+' ? params[1] : params[0]);
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if (m == 'b') replies[ReplyBan]++;
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if (m == network.excepts) replies[ReplyExcepts]++;
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if (m == network.invex) replies[ReplyInvex]++;
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}
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ircFormat("MODE %s %s\r\n", idNames[id], params);
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} else {
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ircFormat("MODE %s\r\n", idNames[id]);
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replies[ReplyMode]++;
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}
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}
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}
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static void channelListMode(uint id, char pm, char l, const char *params) {
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int count = 1;
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for (const char *ch = params; *ch; ++ch) {
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if (*ch == ' ') count++;
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}
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char modes[13 + 1] = { l, l, l, l, l, l, l, l, l, l, l, l, l, '\0' };
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ircFormat("MODE %s %c%.*s %s\r\n", idNames[id], pm, count, modes, params);
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}
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static void commandOp(uint id, char *params) {
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if (params) {
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channelListMode(id, '+', 'o', params);
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} else {
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ircFormat("CS OP %s\r\n", idNames[id]);
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}
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}
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static void commandDeop(uint id, char *params) {
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channelListMode(id, '-', 'o', (params ?: self.nick));
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}
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static void commandVoice(uint id, char *params) {
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if (params) {
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channelListMode(id, '+', 'v', params);
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} else {
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ircFormat("CS VOICE %s\r\n", idNames[id]);
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}
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}
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static void commandDevoice(uint id, char *params) {
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channelListMode(id, '-', 'v', (params ?: self.nick));
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}
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static void commandBan(uint id, char *params) {
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if (params) {
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channelListMode(id, '+', 'b', params);
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} else {
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ircFormat("MODE %s b\r\n", idNames[id]);
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replies[ReplyBan]++;
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}
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}
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static void commandUnban(uint id, char *params) {
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if (!params) return;
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channelListMode(id, '-', 'b', params);
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}
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static void commandExcept(uint id, char *params) {
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if (params) {
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channelListMode(id, '+', network.excepts, params);
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} else {
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ircFormat("MODE %s %c\r\n", idNames[id], network.excepts);
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replies[ReplyExcepts]++;
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}
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}
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static void commandUnexcept(uint id, char *params) {
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if (!params) return;
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channelListMode(id, '-', network.excepts, params);
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}
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static void commandInvex(uint id, char *params) {
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if (params) {
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channelListMode(id, '+', network.invex, params);
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} else {
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ircFormat("MODE %s %c\r\n", idNames[id], network.invex);
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replies[ReplyInvex]++;
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}
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}
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static void commandUninvex(uint id, char *params) {
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if (!params) return;
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channelListMode(id, '-', network.invex, params);
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}
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static void commandList(uint id, char *params) {
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(void)id;
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if (params) {
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ircFormat("LIST :%s\r\n", params);
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} else {
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ircFormat("LIST\r\n");
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}
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replies[ReplyList]++;
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}
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static void commandWhois(uint id, char *params) {
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(void)id;
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if (!params) params = self.nick;
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uint count = 1;
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for (char *ch = params; *ch; ++ch) {
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if (*ch == ',') count++;
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}
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ircFormat("WHOIS %s\r\n", params);
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replies[ReplyWhois] += count;
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}
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static void commandWhowas(uint id, char *params) {
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(void)id;
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if (!params) return;
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ircFormat("WHOWAS %s\r\n", params);
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replies[ReplyWhowas]++;
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}
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static void commandNS(uint id, char *params) {
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(void)id;
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ircFormat("NS %s\r\n", (params ?: "HELP"));
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}
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static void commandCS(uint id, char *params) {
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(void)id;
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ircFormat("CS %s\r\n", (params ?: "HELP"));
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}
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static void commandQuery(uint id, char *params) {
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if (!params) return;
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uint query = idFor(params);
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if (idColors[query] == Default) {
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idColors[query] = cacheGet(id, params)->color;
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}
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windowShow(windowFor(query));
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}
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static void commandWindow(uint id, char *params) {
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if (!params) {
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windowList();
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} else if (isdigit(params[0])) {
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windowShow(strtoul(params, NULL, 10));
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} else {
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id = idFind(params);
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if (id) {
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windowShow(windowFor(id));
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return;
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}
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struct Cursor curs = {0};
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for (const char *match; (match = cacheSearch(&curs, None, params));) {
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id = idFind(match);
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if (!id) continue;
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cacheAccept(&curs);
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windowShow(windowFor(id));
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break;
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}
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}
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}
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static void commandMove(uint id, char *params) {
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if (!params) return;
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char *name = strsep(¶ms, " ");
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if (params) {
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id = idFind(name);
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if (id) windowMove(windowFor(id), strtoul(params, NULL, 10));
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} else {
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windowMove(windowFor(id), strtoul(name, NULL, 10));
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}
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}
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static void commandClose(uint id, char *params) {
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if (!params) {
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windowClose(windowFor(id));
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} else if (isdigit(params[0])) {
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windowClose(strtoul(params, NULL, 10));
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} else {
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id = idFind(params);
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if (id) windowClose(windowFor(id));
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}
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}
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static void commandOpen(uint id, char *params) {
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if (!params) {
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urlOpenCount(id, 1);
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} else if (isdigit(params[0]) && !params[1]) {
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urlOpenCount(id, params[0] - '0');
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} else {
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urlOpenMatch(id, params);
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}
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}
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static void commandCopy(uint id, char *params) {
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urlCopyMatch(id, params);
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}
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static void commandFilter(enum Heat heat, uint id, char *params) {
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if (params) {
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struct Filter filter = filterAdd(heat, params);
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uiFormat(
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id, Cold, NULL, "%sing \3%02d%s %s %s %s",
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(heat == Hot ? "Highlight" : "Ignor"), Brown, filter.mask,
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(filter.cmd ?: ""), (filter.chan ?: ""), (filter.mesg ?: "")
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);
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} else {
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for (size_t i = 0; i < FilterCap && filters[i].mask; ++i) {
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if (filters[i].heat != heat) continue;
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uiFormat(
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Network, Warm, NULL, "%sing \3%02d%s %s %s %s",
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(heat == Hot ? "Highlight" : "Ignor"), Brown, filters[i].mask,
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(filters[i].cmd ?: ""), (filters[i].chan ?: ""),
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(filters[i].mesg ?: "")
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);
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}
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}
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}
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static void commandUnfilter(enum Heat heat, uint id, char *params) {
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if (!params) return;
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struct Filter filter = filterParse(heat, params);
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bool found = filterRemove(filter);
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uiFormat(
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id, Cold, NULL, "%s %sing \3%02d%s %s %s %s",
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(found ? "No longer" : "Not"), (heat == Hot ? "highlight" : "ignor"),
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Brown, filter.mask, (filter.cmd ?: ""), (filter.chan ?: ""),
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(filter.mesg ?: "")
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);
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}
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|
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static void commandHighlight(uint id, char *params) {
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commandFilter(Hot, id, params);
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}
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static void commandIgnore(uint id, char *params) {
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commandFilter(Ice, id, params);
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}
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static void commandUnhighlight(uint id, char *params) {
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commandUnfilter(Hot, id, params);
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}
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static void commandUnignore(uint id, char *params) {
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commandUnfilter(Ice, id, params);
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}
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|
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static void commandExec(uint id, char *params) {
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|
execID = id;
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|
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pid_t pid = fork();
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if (pid < 0) err(EX_OSERR, "fork");
|
|
if (pid) return;
|
|
|
|
setsid();
|
|
close(STDIN_FILENO);
|
|
dup2(execPipe[1], STDOUT_FILENO);
|
|
dup2(utilPipe[1], STDERR_FILENO);
|
|
|
|
const char *shell = getenv("SHELL") ?: "/bin/sh";
|
|
execl(shell, shell, "-c", params, NULL);
|
|
warn("%s", shell);
|
|
_exit(EX_UNAVAILABLE);
|
|
}
|
|
|
|
static void commandHelp(uint id, char *params) {
|
|
(void)id;
|
|
|
|
if (params) {
|
|
ircFormat("HELP :%s\r\n", params);
|
|
replies[ReplyHelp]++;
|
|
return;
|
|
}
|
|
if (self.restricted) {
|
|
uiFormat(id, Warm, NULL, "See catgirl(1) or /help index");
|
|
return;
|
|
}
|
|
|
|
uiHide();
|
|
pid_t pid = fork();
|
|
if (pid < 0) err(EX_OSERR, "fork");
|
|
if (pid) return;
|
|
|
|
char buf[256];
|
|
snprintf(buf, sizeof(buf), "%sp^COMMANDS$", (getenv("LESS") ?: ""));
|
|
setenv("LESS", buf, 1);
|
|
execlp("man", "man", "1", "catgirl", NULL);
|
|
dup2(utilPipe[1], STDERR_FILENO);
|
|
warn("man");
|
|
_exit(EX_UNAVAILABLE);
|
|
}
|
|
|
|
enum Flag {
|
|
BIT(Multiline),
|
|
BIT(Restrict),
|
|
BIT(Kiosk),
|
|
};
|
|
|
|
static const struct Handler {
|
|
const char *cmd;
|
|
Command *fn;
|
|
enum Flag flags;
|
|
enum Cap caps;
|
|
} Commands[] = {
|
|
{ "/away", commandAway, 0, 0 },
|
|
{ "/ban", commandBan, 0, 0 },
|
|
{ "/close", commandClose, 0, 0 },
|
|
{ "/copy", commandCopy, Restrict | Kiosk, 0 },
|
|
{ "/cs", commandCS, 0, 0 },
|
|
{ "/debug", commandDebug, Kiosk, 0 },
|
|
{ "/deop", commandDeop, 0, 0 },
|
|
{ "/devoice", commandDevoice, 0, 0 },
|
|
{ "/except", commandExcept, 0, 0 },
|
|
{ "/exec", commandExec, Multiline | Restrict | Kiosk, 0 },
|
|
{ "/help", commandHelp, 0, 0 }, // Restrict special case.
|
|
{ "/highlight", commandHighlight, 0, 0 },
|
|
{ "/ignore", commandIgnore, 0, 0 },
|
|
{ "/invex", commandInvex, 0, 0 },
|
|
{ "/invite", commandInvite, 0, 0 },
|
|
{ "/join", commandJoin, Kiosk, 0 },
|
|
{ "/kick", commandKick, 0, 0 },
|
|
{ "/list", commandList, Kiosk, 0 },
|
|
{ "/me", commandMe, Multiline, 0 },
|
|
{ "/mode", commandMode, 0, 0 },
|
|
{ "/move", commandMove, 0, 0 },
|
|
{ "/msg", commandMsg, Multiline | Kiosk, 0 },
|
|
{ "/names", commandNames, 0, 0 },
|
|
{ "/nick", commandNick, 0, 0 },
|
|
{ "/notice", commandNotice, Multiline, 0 },
|
|
{ "/ns", commandNS, 0, 0 },
|
|
{ "/o", commandOpen, Restrict | Kiosk, 0 },
|
|
{ "/op", commandOp, 0, 0 },
|
|
{ "/open", commandOpen, Restrict | Kiosk, 0 },
|
|
{ "/ops", commandOps, 0, 0 },
|
|
{ "/part", commandPart, Kiosk, 0 },
|
|
{ "/query", commandQuery, Kiosk, 0 },
|
|
{ "/quit", commandQuit, 0, 0 },
|
|
{ "/quote", commandQuote, Multiline | Kiosk, 0 },
|
|
{ "/say", commandPrivmsg, Multiline, 0 },
|
|
{ "/setname", commandSetname, 0, CapSetname },
|
|
{ "/topic", commandTopic, 0, 0 },
|
|
{ "/unban", commandUnban, 0, 0 },
|
|
{ "/unexcept", commandUnexcept, 0, 0 },
|
|
{ "/unhighlight", commandUnhighlight, 0, 0 },
|
|
{ "/unignore", commandUnignore, 0, 0 },
|
|
{ "/uninvex", commandUninvex, 0, 0 },
|
|
{ "/voice", commandVoice, 0, 0 },
|
|
{ "/w", commandWindow, 0, 0 },
|
|
{ "/whois", commandWhois, 0, 0 },
|
|
{ "/whowas", commandWhowas, 0, 0 },
|
|
{ "/window", commandWindow, 0, 0 },
|
|
};
|
|
|
|
static int compar(const void *cmd, const void *_handler) {
|
|
const struct Handler *handler = _handler;
|
|
return strcmp(cmd, handler->cmd);
|
|
}
|
|
|
|
const char *commandIsPrivmsg(uint id, const char *input) {
|
|
if (id == Network || id == Debug) return NULL;
|
|
if (input[0] != '/') return input;
|
|
const char *space = strchr(&input[1], ' ');
|
|
const char *slash = strchr(&input[1], '/');
|
|
if (slash && (!space || slash < space)) return input;
|
|
return NULL;
|
|
}
|
|
|
|
const char *commandIsNotice(uint id, const char *input) {
|
|
if (id == Network || id == Debug) return NULL;
|
|
if (strncmp(input, "/notice ", 8)) return NULL;
|
|
return &input[8];
|
|
}
|
|
|
|
const char *commandIsAction(uint id, const char *input) {
|
|
if (id == Network || id == Debug) return NULL;
|
|
if (strncmp(input, "/me ", 4)) return NULL;
|
|
return &input[4];
|
|
}
|
|
|
|
size_t commandWillSplit(uint id, const char *input) {
|
|
int chunk;
|
|
const char *params;
|
|
if (NULL != (params = commandIsPrivmsg(id, input))) {
|
|
chunk = splitChunk("PRIVMSG", id);
|
|
} else if (NULL != (params = commandIsNotice(id, input))) {
|
|
chunk = splitChunk("NOTICE", id);
|
|
} else if (NULL != (params = commandIsAction(id, input))) {
|
|
chunk = splitChunk("PRIVMSG \1ACTION\1", id);
|
|
} else if (id != Network && id != Debug && !strncmp(input, "/say ", 5)) {
|
|
params = &input[5];
|
|
chunk = splitChunk("PRIVMSG", id);
|
|
} else {
|
|
return 0;
|
|
}
|
|
if (strlen(params) <= (size_t)chunk) return 0;
|
|
for (
|
|
int split;
|
|
params[(split = splitLen(chunk, params))];
|
|
params = ¶ms[split + 1]
|
|
) {
|
|
if (params[split] == '\n') continue;
|
|
return (params - input) + split;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool commandAvailable(const struct Handler *handler) {
|
|
if (handler->flags & Restrict && self.restricted) return false;
|
|
if (handler->flags & Kiosk && self.kiosk) return false;
|
|
if (handler->caps && (handler->caps & self.caps) != handler->caps) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void command(uint id, char *input) {
|
|
if (id == Debug && input[0] != '/' && !self.restricted) {
|
|
commandQuote(id, input);
|
|
return;
|
|
} else if (!input[0]) {
|
|
return;
|
|
} else if (commandIsPrivmsg(id, input)) {
|
|
commandPrivmsg(id, input);
|
|
return;
|
|
} else if (input[0] == '/' && isdigit(input[1])) {
|
|
commandWindow(id, &input[1]);
|
|
return;
|
|
}
|
|
|
|
struct Cursor curs = {0};
|
|
const char *cmd = strsep(&input, " ");
|
|
const char *unique = cacheComplete(&curs, None, cmd);
|
|
if (unique && !cacheComplete(&curs, None, cmd)) {
|
|
cmd = unique;
|
|
}
|
|
|
|
const struct Handler *handler = bsearch(
|
|
cmd, Commands, ARRAY_LEN(Commands), sizeof(*handler), compar
|
|
);
|
|
if (!handler) {
|
|
uiFormat(id, Warm, NULL, "No such command %s", cmd);
|
|
return;
|
|
}
|
|
if (!commandAvailable(handler)) {
|
|
uiFormat(id, Warm, NULL, "Command %s is unavailable", cmd);
|
|
return;
|
|
}
|
|
|
|
if (input) {
|
|
if (!(handler->flags & Multiline)) {
|
|
input[strcspn(input, "\n")] = '\0';
|
|
}
|
|
input += strspn(input, " ");
|
|
size_t len = strlen(input);
|
|
while (input[len - 1] == ' ') input[--len] = '\0';
|
|
if (!input[0]) input = NULL;
|
|
}
|
|
handler->fn(id, input);
|
|
}
|
|
|
|
void commandCache(void) {
|
|
for (size_t i = 0; i < ARRAY_LEN(Commands); ++i) {
|
|
if (!commandAvailable(&Commands[i])) continue;
|
|
cacheInsert(false, None, Commands[i].cmd);
|
|
}
|
|
}
|