catgirl/command.c

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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#include <unistd.h>
#include "chat.h"
typedef void Command(uint id, char *params);
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static void commandDebug(uint id, char *params) {
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(void)id;
(void)params;
self.debug ^= true;
uiFormat(
Debug, Warm, NULL,
"\3%dDebug is %s", Gray, (self.debug ? "on" : "off")
);
}
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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}
static void echoMessage(char *cmd, uint id, char *params) {
if (!params || !params[0]) return;
ircFormat("%s %s :%s\r\n", cmd, idNames[id], params);
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struct Message msg = {
.nick = self.nick,
.user = self.user,
.cmd = cmd,
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.params[0] = idNames[id],
.params[1] = params,
};
handle(msg);
}
static void commandPrivmsg(uint id, char *params) {
echoMessage("PRIVMSG", id, params);
}
static void commandNotice(uint id, char *params) {
echoMessage("NOTICE", id, params);
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}
static void commandMe(uint id, char *params) {
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char buf[512];
snprintf(buf, sizeof(buf), "\1ACTION %s\1", (params ? params : ""));
echoMessage("PRIVMSG", id, buf);
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}
static void commandMsg(uint id, char *params) {
id = idFor(strsep(&params, " "));
echoMessage("PRIVMSG", id, params);
}
static void commandJoin(uint id, char *params) {
if (!params) params = idNames[id];
uint count = 1;
for (char *ch = params; *ch && *ch != ' '; ++ch) {
if (*ch == ',') count++;
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}
ircFormat("JOIN %s\r\n", params);
replies.join += count;
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replies.topic += count;
replies.names += count;
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}
static void commandPart(uint id, char *params) {
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if (params) {
ircFormat("PART %s :%s\r\n", idNames[id], params);
} else {
ircFormat("PART %s\r\n", idNames[id]);
}
}
static void commandQuit(uint id, char *params) {
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(void)id;
set(&self.quit, (params ? params : "nyaa~"));
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}
static void commandNick(uint id, char *params) {
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(void)id;
if (!params) return;
ircFormat("NICK :%s\r\n", params);
}
static void commandAway(uint id, char *params) {
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(void)id;
if (params) {
ircFormat("AWAY :%s\r\n", params);
} else {
ircFormat("AWAY\r\n");
}
replies.away++;
}
static void commandTopic(uint id, char *params) {
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if (params) {
ircFormat("TOPIC %s :%s\r\n", idNames[id], params);
} else {
ircFormat("TOPIC %s\r\n", idNames[id]);
replies.topic++;
}
}
static void commandNames(uint id, char *params) {
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(void)params;
ircFormat("NAMES %s\r\n", idNames[id]);
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replies.names++;
}
static void commandInvite(uint id, char *params) {
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if (!params) return;
char *nick = strsep(&params, " ");
ircFormat("INVITE %s %s\r\n", nick, idNames[id]);
}
static void commandKick(uint id, char *params) {
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if (!params) return;
char *nick = strsep(&params, " ");
if (params) {
ircFormat("KICK %s %s :%s\r\n", idNames[id], nick, params);
} else {
ircFormat("KICK %s %s\r\n", idNames[id], nick);
}
}
static void commandMode(uint id, char *params) {
if (id == Network) {
if (params) {
ircFormat("MODE %s %s\r\n", self.nick, params);
} else {
ircFormat("MODE %s\r\n", self.nick);
}
} else {
if (params) {
ircFormat("MODE %s %s\r\n", idNames[id], params);
} else {
ircFormat("MODE %s\r\n", idNames[id]);
}
}
}
static void channelListMode(uint id, char pm, char l, char *params) {
int count = 1;
for (char *ch = params; *ch; ++ch) {
if (*ch == ' ') count++;
}
char modes[ParamCap - 2] = { l, l, l, l, l, l, l, l, l, l, l, l, l };
ircFormat("MODE %s %c%.*s %s\r\n", idNames[id], pm, count, modes, params);
}
static void commandBan(uint id, char *params) {
if (params) {
channelListMode(id, '+', 'b', params);
} else {
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ircFormat("MODE %s b\r\n", idNames[id]);
replies.ban++;
}
}
static void commandUnban(uint id, char *params) {
if (!params) return;
channelListMode(id, '-', 'b', params);
}
static void commandExcept(uint id, char *params) {
if (params) {
channelListMode(id, '+', network.excepts, params);
} else {
ircFormat("MODE %s %c\r\n", idNames[id], network.excepts);
replies.excepts++;
}
}
static void commandUnexcept(uint id, char *params) {
if (!params) return;
channelListMode(id, '-', network.excepts, params);
}
static void commandInvex(uint id, char *params) {
if (params) {
channelListMode(id, '+', network.invex, params);
} else {
ircFormat("MODE %s %c\r\n", idNames[id], network.invex);
replies.invex++;
}
}
static void commandUninvex(uint id, char *params) {
if (!params) return;
channelListMode(id, '-', network.invex, params);
}
static void commandList(uint id, char *params) {
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(void)id;
if (params) {
ircFormat("LIST :%s\r\n", params);
} else {
ircFormat("LIST\r\n");
}
replies.list++;
}
static void commandWhois(uint id, char *params) {
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(void)id;
if (!params) return;
ircFormat("WHOIS :%s\r\n", params);
replies.whois++;
}
static void commandNS(uint id, char *params) {
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(void)id;
if (params) ircFormat("PRIVMSG NickServ :%s\r\n", params);
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}
static void commandCS(uint id, char *params) {
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(void)id;
if (params) ircFormat("PRIVMSG ChanServ :%s\r\n", params);
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}
static void commandQuery(uint id, char *params) {
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if (!params) return;
uint query = idFor(params);
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idColors[query] = completeColor(id, params);
uiShowID(query);
}
static void commandWindow(uint id, char *params) {
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if (!params) return;
if (isdigit(params[0])) {
uiShowNum(strtoul(params, NULL, 10));
} else {
id = idFind(params);
if (id) uiShowID(id);
}
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}
static void commandMove(uint id, char *params) {
if (!params) return;
char *name = strsep(&params, " ");
if (params) {
id = idFind(name);
if (id) uiMoveID(id, strtoul(params, NULL, 10));
} else {
uiMoveID(id, strtoul(name, NULL, 10));
}
}
static void commandClose(uint id, char *params) {
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if (!params) {
uiCloseID(id);
} else if (isdigit(params[0])) {
uiCloseNum(strtoul(params, NULL, 10));
} else {
id = idFind(params);
if (id) uiCloseID(id);
}
}
static void commandOpen(uint id, char *params) {
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if (!params) {
urlOpenCount(id, 1);
} else if (isdigit(params[0])) {
urlOpenCount(id, strtoul(params, NULL, 10));
} else {
urlOpenMatch(id, params);
}
}
static void commandCopy(uint id, char *params) {
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urlCopyMatch(id, params);
}
static void commandExec(uint id, char *params) {
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execID = id;
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
const char *shell = getenv("SHELL");
if (!shell) shell = "/bin/sh";
close(STDIN_FILENO);
dup2(execPipe[1], STDOUT_FILENO);
dup2(utilPipe[1], STDERR_FILENO);
execlp(shell, shell, "-c", params, NULL);
warn("%s", shell);
_exit(EX_UNAVAILABLE);
}
static void commandHelp(uint id, char *params) {
(void)id;
uiHide();
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
char buf[256];
snprintf(buf, sizeof(buf), "ip%s$", (params ? params : "COMMANDS"));
setenv("LESS", buf, 1);
execlp("man", "man", "1", "catgirl", NULL);
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dup2(utilPipe[1], STDERR_FILENO);
warn("man");
_exit(EX_UNAVAILABLE);
}
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static const struct Handler {
const char *cmd;
Command *fn;
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bool restricted;
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} Commands[] = {
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{ "/away", .fn = commandAway },
{ "/ban", .fn = commandBan },
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{ "/close", .fn = commandClose },
{ "/copy", .fn = commandCopy, .restricted = true },
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{ "/cs", .fn = commandCS },
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{ "/debug", .fn = commandDebug, .restricted = true },
{ "/except", .fn = commandExcept },
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{ "/exec", .fn = commandExec, .restricted = true },
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{ "/help", .fn = commandHelp },
{ "/invex", .fn = commandInvex },
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{ "/invite", .fn = commandInvite },
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{ "/join", .fn = commandJoin, .restricted = true },
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{ "/kick", .fn = commandKick },
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{ "/list", .fn = commandList },
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{ "/me", .fn = commandMe },
{ "/mode", .fn = commandMode },
{ "/move", .fn = commandMove },
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{ "/msg", .fn = commandMsg, .restricted = true },
{ "/names", .fn = commandNames },
{ "/nick", .fn = commandNick },
{ "/notice", .fn = commandNotice },
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{ "/ns", .fn = commandNS },
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{ "/open", .fn = commandOpen, .restricted = true },
{ "/part", .fn = commandPart },
{ "/query", .fn = commandQuery, .restricted = true },
{ "/quit", .fn = commandQuit },
{ "/quote", .fn = commandQuote, .restricted = true },
{ "/topic", .fn = commandTopic },
{ "/unban", .fn = commandUnban },
{ "/unexcept", .fn = commandUnexcept },
{ "/uninvex", .fn = commandUninvex },
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{ "/whois", .fn = commandWhois },
{ "/window", .fn = commandWindow },
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};
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) {
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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) {
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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) {
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if (id == Network || id == Debug) return NULL;
if (strncmp(input, "/me ", 4)) return NULL;
return &input[4];
}
void command(uint id, char *input) {
if (id == Debug && input[0] != '/' && !self.restricted) {
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commandQuote(id, input);
return;
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} else if (commandIsPrivmsg(id, input)) {
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commandPrivmsg(id, input);
return;
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} else if (input[0] == '/' && isdigit(input[1])) {
commandWindow(id, &input[1]);
return;
}
const char *cmd = strsep(&input, " ");
const char *unique = complete(None, cmd);
if (unique && !complete(None, cmd)) {
cmd = unique;
completeReject();
}
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 (self.restricted && handler->restricted) {
uiFormat(id, Warm, NULL, "Command %s is restricted", cmd);
return;
}
if (input) {
input += strspn(input, " ");
size_t len = strlen(input);
while (input[len - 1] == ' ') input[--len] = '\0';
if (!input[0]) input = NULL;
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}
handler->fn(id, input);
}
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void commandComplete(void) {
for (size_t i = 0; i < ARRAY_LEN(Commands); ++i) {
completeAdd(None, Commands[i].cmd, Default);
}
}