diff options
| -rw-r--r-- | bin/pingbot.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/bin/pingbot.c b/bin/pingbot.c deleted file mode 100644 index 41876567..00000000 --- a/bin/pingbot.c +++ /dev/null @@ -1,176 +0,0 @@ -/* Copyright (C) 2019 June 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 <errno.h> -#include <netdb.h> -#include <netinet/in.h> -#include <stdarg.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/event.h> -#include <sys/socket.h> -#include <sysexits.h> -#include <unistd.h> - -typedef unsigned uint; - -__attribute__((format(printf, 2, 3))) -static int pdprintf(int fd, const char *format, ...) { - va_list ap; - va_start(ap, format); - vprintf(format, ap); - va_end(ap); - va_start(ap, format); - int len = vdprintf(fd, format, ap); - va_end(ap); - return len; -} - -int main(int argc, char *argv[]) { - int error; - - const char *host = NULL; - const char *port = "6667"; - const char *nick = "pingbot"; - const char *join = NULL; - uint timeout = 120; - uint delay = 30; - - int opt; - while (0 < (opt = getopt(argc, argv, "d:j:n:p:t:"))) { - switch (opt) { - break; case 'd': delay = strtoul(optarg, NULL, 0); - break; case 'j': join = optarg; - break; case 'n': nick = optarg; - break; case 'p': port = optarg; - break; case 't': timeout = strtoul(optarg, NULL, 0); - break; default: return EX_USAGE; - } - } - if (optind < argc) host = argv[optind]; - if (!host || !timeout) return EX_USAGE; - - struct addrinfo *head; - struct addrinfo hints = { - .ai_family = AF_UNSPEC, - .ai_socktype = SOCK_STREAM, - .ai_protocol = IPPROTO_TCP, - }; - error = getaddrinfo(host, port, &hints, &head); - if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error)); - - int client = -1; - struct addrinfo *ai; - for (ai = head; ai; ai = ai->ai_next) { - client = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); - if (client < 0) err(EX_OSERR, "socket"); - - error = connect(client, ai->ai_addr, ai->ai_addrlen); - if (!error) break; - - close(client); - client = -1; - } - if (client < 0) err(EX_UNAVAILABLE, "connect"); - - error = pdprintf(client, "NICK %1$s\r\nUSER %1$s 0 * :%1$s\r\n", nick); - if (error < 0) err(EX_IOERR, "pdprintf"); - - int kq = kqueue(); - if (kq < 0) err(EX_OSERR, "kqueue"); - - struct kevent event; - EV_SET(&event, client, EVFILT_READ, EV_ADD, 0, 0, 0); - int nevents = kevent(kq, &event, 1, NULL, 0, NULL); - if (nevents < 0) err(EX_OSERR, "kevent"); - - char buf[4096]; - size_t len = 0; - bool pong = true; - for (;;) { - nevents = kevent(kq, NULL, 0, &event, 1, NULL); - if (nevents < 0) err(EX_IOERR, "kevent"); - - if (event.filter == EVFILT_TIMER) { - char *ping = event.udata; - if (pong) { - error = pdprintf(client, "PONG %s\r\n", ping); - if (error < 0) err(EX_IOERR, "pdprintf"); - } - pong = true; - free(ping); - continue; - } - - ssize_t rlen = read(client, &buf[len], sizeof(buf) - len); - if (rlen < 0) err(EX_IOERR, "read"); - len += (size_t)rlen; - - char *crlf; - char *line = buf; - while (NULL != (crlf = strnstr(line, "\r\n", &buf[len] - line))) { - crlf[0] = '\0'; - printf("%s\n", line); - - if (line[0] == ':') strsep(&line, " "); - if (!line) errx(EX_PROTOCOL, "unexpected eol"); - char *cmd = strsep(&line, " "); - - if (!strcmp(cmd, "001") && join) { - error = pdprintf(client, "JOIN :%s\r\n", join); - if (error < 0) err(EX_IOERR, "pdprintf"); - - } else if (!strcmp(cmd, "PING")) { - EV_SET( - &event, 0, EVFILT_TIMER, EV_ADD | EV_ONESHOT, - NOTE_SECONDS, timeout - 1, strdup(line) - ); - nevents = kevent(kq, &event, 1, NULL, 0, NULL); - if (nevents < 0) err(EX_OSERR, "kevent"); - - } else if (!strcmp(cmd, "PRIVMSG") && strcasestr(line, nick)) { - pong = false; - - } else if (!strcmp(cmd, "ERROR")) { - close(client); - sleep(delay); - - client = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); - if (client < 0) err(EX_OSERR, "socket"); - - error = connect(client, ai->ai_addr, ai->ai_addrlen); - if (error) err(EX_UNAVAILABLE, "connect"); - - error = pdprintf( - client, "NICK %1$s\r\nUSER %1$s 0 * :%1$s\r\n", nick - ); - if (error < 0) err(EX_IOERR, "pdprintf"); - - EV_SET(&event, client, EVFILT_READ, EV_ADD, 0, 0, 0); - int nevents = kevent(kq, &event, 1, NULL, 0, NULL); - if (nevents < 0) err(EX_OSERR, "kevent"); - } - - line = &crlf[2]; - } - - len -= line - buf; - memmove(buf, line, len); - } -} |