diff options
Diffstat (limited to 'linger.c')
| -rw-r--r-- | linger.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/linger.c b/linger.c deleted file mode 100644 index 3e34fab..0000000 --- a/linger.c +++ /dev/null @@ -1,167 +0,0 @@ -/* Copyright (C) 2019 C. 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 <limits.h> -#include <netdb.h> -#include <netinet/in.h> -#include <poll.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/socket.h> -#include <sysexits.h> -#include <tls.h> -#include <unistd.h> - -#ifndef DEFAULT_CERT_PATH -#define DEFAULT_CERT_PATH "/usr/local/etc/letsencrypt/live/%s/fullchain.pem" -#endif - -#ifndef DEFAULT_PRIV_PATH -#define DEFAULT_PRIV_PATH "/usr/local/etc/letsencrypt/live/%s/privkey.pem" -#endif - -static char *censor(char *arg) { - char *dup = strdup(arg); - if (!dup) err(EX_OSERR, "strdup"); - memset(arg, '*', strlen(dup)); - return dup; -} - -int main(int argc, char *argv[]) { - int error; - - const char *localHost = "localhost"; - const char *localPort = "6697"; - const char *localPass = NULL; - char certPath[PATH_MAX] = ""; - char privPath[PATH_MAX] = ""; - - const char *host = NULL; - const char *port = "6697"; - const char *pass = NULL; - const char *auth = NULL; - const char *nick = NULL; - const char *user = NULL; - const char *real = NULL; - const char *join = NULL; - - int opt; - while (0 < (opt = getopt(argc, argv, "C:H:K:P:W:a:h:j:n:p:r:u:w:"))) { - switch (opt) { - break; case 'C': strlcpy(certPath, optarg, sizeof(certPath)); - break; case 'H': localHost = optarg; - break; case 'K': strlcpy(privPath, optarg, sizeof(privPath)); - break; case 'P': localPort = optarg; - break; case 'W': localPass = censor(optarg); - break; case 'a': auth = censor(optarg); - break; case 'h': host = optarg; - break; case 'j': join = optarg; - break; case 'n': nick = optarg; - break; case 'p': port = optarg; - break; case 'r': real = optarg; - break; case 'u': user = optarg; - break; case 'w': pass = censor(optarg); - break; default: return EX_USAGE; - } - } - - if (!certPath[0]) { - snprintf(certPath, sizeof(certPath), DEFAULT_CERT_PATH, localHost); - } - if (!privPath[0]) { - snprintf(privPath, sizeof(privPath), DEFAULT_PRIV_PATH, localHost); - } - - if (!host) errx(EX_USAGE, "no host"); - if (!nick) { - nick = getenv("USER"); - if (!nick) errx(EX_CONFIG, "USER unset"); - } - if (!user) user = nick; - if (!real) real = nick; - - struct tls_config *config = tls_config_new(); - if (!config) errx(EX_SOFTWARE, "tls_config_new"); - - error = tls_config_set_keypair_file(config, certPath, privPath); - if (error) { - errx( - EX_CONFIG, "tls_config_set_keypair_file: %s", - tls_config_error(config) - ); - } - - struct tls *server = tls_server(); - if (!server) errx(EX_SOFTWARE, "tls_server"); - - error = tls_configure(server, config); - if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(server)); - tls_config_free(config); - - struct addrinfo *head; - struct addrinfo hints = { - .ai_family = AF_UNSPEC, - .ai_socktype = SOCK_STREAM, - .ai_protocol = IPPROTO_TCP, - }; - error = getaddrinfo(localHost, localPort, &hints, &head); - if (error) { - errx(EX_NOHOST, "%s:%s: %s", localHost, localPort, gai_strerror(error)); - } - - enum { PollCap = 64 }; - struct pollfd fds[PollCap]; - - size_t binds = 0; - for (struct addrinfo *ai = head; ai; ai = ai->ai_next) { - fds[binds].fd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); - if (fds[binds].fd < 0) err(EX_OSERR, "socket"); - - error = bind(fds[binds].fd, ai->ai_addr, ai->ai_addrlen); - if (error) { - warn("%s:%s", localHost, localPort); - close(fds[binds].fd); - continue; - } - - if (++binds == PollCap) errx(EX_CONFIG, "too many sockets to bind"); - } - if (!binds) return EX_UNAVAILABLE; - freeaddrinfo(head); - - for (size_t i = 0; i < binds; ++i) { - fds[i].events = POLLIN; - error = listen(fds[i].fd, 1); - if (error) err(EX_IOERR, "listen"); - } - - while (0 < poll(fds, binds, -1)) { - for (size_t i = 0; i < binds; ++i) { - if (!fds[i].revents) continue; - - int sock = accept(fds[i].fd, NULL, NULL); - if (sock < 0) err(EX_IOERR, "accept"); - - struct tls *client; - error = tls_accept_socket(server, &client, sock); - if (error) { - errx(EX_SOFTWARE, "tls_accept_socket: %s", tls_error(server)); - } - } - } -} |