Rename listen to local

1 files changed, 0 insertions, 208 deletions

diff --git a/listen.c b/listen.c
deleted file mode 100644
index 727a1e1..0000000
--- a/listen.c
+++ /dev/null
@@ -1,208 +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 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/>.
- */
-
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/un.h>
-#include <sysexits.h>
-#include <tls.h>
-#include <unistd.h>
-
-#ifdef __FreeBSD__
-#include <sys/capsicum.h>
-#endif
-
-#include "bounce.h"
-
-static struct tls *server;
-
-static byte *readFile(size_t *len, FILE *file) {
-	struct stat stat;
-	int error = fstat(fileno(file), &stat);
-	if (error) err(EX_IOERR, "fstat");
-
-	byte *buf = malloc(stat.st_size);
-	if (!buf) err(EX_OSERR, "malloc");
-
-	*len = fread(buf, 1, stat.st_size, file);
-	if (ferror(file)) err(EX_IOERR, "fread");
-
-	return buf;
-}
-
-void listenConfig(FILE *cert, FILE *priv) {
-	tls_free(server);
-	server = tls_server();
-	if (!server) errx(EX_SOFTWARE, "tls_server");
-
-	struct tls_config *config = tls_config_new();
-	if (!config) errx(EX_SOFTWARE, "tls_config_new");
-
-	size_t len;
-	byte *buf = readFile(&len, cert);
-	int error = tls_config_set_cert_mem(config, buf, len);
-	if (error) {
-		errx(EX_CONFIG, "tls_config_set_cert_mem: %s", tls_config_error(config));
-	}
-	free(buf);
-
-	buf = readFile(&len, priv);
-	error = tls_config_set_key_mem(config, buf, len);
-	if (error) {
-		errx(EX_CONFIG, "tls_config_set_key_mem: %s", tls_config_error(config));
-	}
-	free(buf);
-
-	error = tls_configure(server, config);
-	if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(server));
-	tls_config_free(config);
-}
-
-size_t listenBind(int fds[], size_t cap, const char *host, const char *port) {
-	struct addrinfo *head;
-	struct addrinfo hints = {
-		.ai_family = AF_UNSPEC,
-		.ai_socktype = SOCK_STREAM,
-		.ai_protocol = IPPROTO_TCP,
-	};
-	int error = getaddrinfo(host, port, &hints, &head);
-	if (error) errx(EX_NOHOST, "%s:%s: %s", host, port, gai_strerror(error));
-
-	size_t len = 0;
-	for (struct addrinfo *ai = head; ai && len < cap; ai = ai->ai_next) {
-		fds[len] = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-		if (fds[len] < 0) err(EX_OSERR, "socket");
-
-		int yes = 1;
-		error = setsockopt(fds[len], SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
-		if (error) err(EX_OSERR, "setsockopt");
-
-		error = bind(fds[len], ai->ai_addr, ai->ai_addrlen);
-		if (error) {
-			warn("%s:%s", host, port);
-			close(fds[len]);
-			continue;
-		}
-
-		len++;
-	}
-	freeaddrinfo(head);
-
-	if (!len) errx(EX_UNAVAILABLE, "could not bind any sockets");
-	return len;
-}
-
-static bool unix;
-static int unixDir = -1;
-static char unixFile[PATH_MAX];
-
-static void unixUnlink(void) {
-	int error = unlinkat(unixDir, unixFile, 0);
-	if (error) warn("unlinkat");
-}
-
-size_t listenUnix(int fds[], size_t cap, const char *path) {
-	if (!cap) return 0;
-
-	int sock = socket(PF_UNIX, SOCK_STREAM, 0);
-	if (sock < 0) err(EX_OSERR, "socket");
-
-	struct sockaddr_un addr = { .sun_family = AF_UNIX };
-	if (strlen(path) > sizeof(addr.sun_path)) {
-		errx(EX_CONFIG, "path too long: %s", path);
-	}
-	strncpy(addr.sun_path, path, sizeof(addr.sun_path));
-
-	int error = bind(sock, (struct sockaddr *)&addr, SUN_LEN(&addr));
-	if (error) err(EX_UNAVAILABLE, "%s", path);
-
-	char dir[PATH_MAX] = ".";
-	const char *base = strrchr(path, '/');
-	if (base) {
-		snprintf(dir, sizeof(dir), "%.*s", (int)(base - path), path);
-		base++;
-	} else {
-		base = path;
-	}
-	snprintf(unixFile, sizeof(unixFile), "%s", base);
-
-	unixDir = open(dir, O_DIRECTORY);
-	if (unixDir < 0) err(EX_UNAVAILABLE, "%s", dir);
-	atexit(unixUnlink);
-
-#ifdef __FreeBSD__
-	cap_rights_t rights;
-	error = cap_rights_limit(unixDir, cap_rights_init(&rights, CAP_UNLINKAT));
-	if (error) err(EX_OSERR, "cap_rights_limit");
-#endif
-
-	unix = true;
-	fds[0] = sock;
-	return 1;
-}
-
-static int recvfd(int sock) {
-	size_t len = CMSG_SPACE(sizeof(int));
-	char buf[len];
-
-	char x;
-	struct iovec iov = { .iov_base = &x, .iov_len = 1 };
-	struct msghdr msg = {
-		.msg_iov = &iov,
-		.msg_iovlen = 1,
-		.msg_control = buf,
-		.msg_controllen = len,
-	};
-	if (0 > recvmsg(sock, &msg, 0)) return -1;
-
-	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
-	if (!cmsg || cmsg->cmsg_type != SCM_RIGHTS) {
-		errno = ENOMSG;
-		return -1;
-	}
-	return *(int *)CMSG_DATA(cmsg);
-}
-
-struct tls *listenAccept(int *fd, int bind) {
-	*fd = accept(bind, NULL, NULL);
-	if (*fd < 0) err(EX_IOERR, "accept");
-
-	if (unix) {
-		int sent = recvfd(*fd);
-		if (sent < 0) err(EX_IOERR, "recvfd");
-		close(*fd);
-		*fd = sent;
-	}
-
-	int yes = 1;
-	int error = setsockopt(*fd, SOL_SOCKET, SO_NOSIGPIPE, &yes, sizeof(yes));
-	if (error) err(EX_OSERR, "setsockopt");
-
-	struct tls *client;
-	error = tls_accept_socket(server, &client, *fd);
-	if (error) errx(EX_SOFTWARE, "tls_accept_socket: %s", tls_error(server));
-	return client;
-}