--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: un.c,v 1.1 1999/07/26 23:34:11 mdw Exp $
+ *
+ * Protocol specific definitions for Unix-domain sockets
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the `fw' port forwarder.
+ *
+ * `fw' 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * `fw' 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 `fw'; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: un.c,v $
+ * Revision 1.1 1999/07/26 23:34:11 mdw
+ * New socket address types.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include "config.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include <mLib/alloc.h>
+#include <mLib/dstr.h>
+#include <mLib/report.h>
+#include <mLib/sub.h>
+
+#include "addr.h"
+#include "conf.h"
+#include "fattr.h"
+#include "fw.h"
+#include "reffd.h"
+#include "scan.h"
+#include "un.h"
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct un_addr {
+ addr a;
+ struct sockaddr_un sun;
+} un_addr;
+
+typedef struct un_opts {
+ addr_opts ao;
+ fattr f;
+} un_opts;
+
+/*----- Protocol operations -----------------------------------------------*/
+
+/* --- @read@ --- */
+
+static addr *un_read(scanner *sc, unsigned type)
+{
+ dstr d = DSTR_INIT;
+ un_addr *ua;
+
+ conf_name(sc, '/', &d);
+ ua = xmalloc(sizeof(addr) +
+ offsetof(struct sockaddr_un, sun_path) +
+ d.len + 1);
+ ua->a.ops = &un_ops;
+ ua->a.sz = offsetof(struct sockaddr_un, sun_path) + d.len + 1;
+ ua->sun.sun_family = AF_UNIX;
+ memcpy(ua->sun.sun_path, d.buf, d.len + 1);
+ dstr_destroy(&d);
+ return (&ua->a);
+}
+
+/* --- @destroy@ --- */
+
+static void un_destroy(addr *a)
+{
+ un_addr *ua = (un_addr *)a;
+ free(ua);
+}
+
+/* --- @print@ --- */
+
+static void un_print(addr *a, unsigned type, dstr *d)
+{
+ un_addr *ua = (un_addr *)a;
+ dstr_puts(d, "unix:");
+ dstr_puts(d, ua->sun.sun_path);
+}
+
+/* --- @initopts@ --- */
+
+static addr_opts *un_initopts(void)
+{
+ un_opts *uo = CREATE(un_opts);
+ uo->f = fattr_global;
+ return (&uo->ao);
+}
+
+/* --- @option@ --- */
+
+static int un_option(scanner *sc, addr_opts *ao)
+{
+ un_opts *uo = (un_opts *)ao;
+ CONF_BEGIN(sc, "unix", "Unix domain socket")
+
+ if (fattr_option(sc, uo ? &uo->f : &fattr_global))
+ CONF_ACCEPT;
+
+ CONF_END;
+}
+
+/* --- @accept@ --- */
+
+static reffd *un_accept(int fd, addr_opts *ao, const char *desc)
+{
+ int nfd;
+ un_opts *uo = (un_opts *)ao;
+
+ /* --- Accept the new connection --- */
+
+ {
+ char buf[PATH_MAX + sizeof(struct sockaddr)];
+ struct sockaddr_un *sun = (struct sockaddr_un *)buf;
+ int sunsz = sizeof(buf);
+
+ if ((nfd = accept(fd, (struct sockaddr *)sun, &sunsz)) < 0)
+ return (0);
+ }
+
+ /* --- Log the connection --- *
+ *
+ * It'd be really nice if I could find out who the user is, but I can't in
+ * anything like a portable way.
+ */
+
+ if (!(uo->ao.f & ADDRF_NOLOG))
+ fw_log(-1, "[%s] accepted", desc);
+ return (reffd_init(nfd));
+}
+
+/* --- @freeopts@ --- */
+
+static void un_freeopts(addr_opts *ao)
+{
+ un_opts *uo = (un_opts *)ao;
+ DESTROY(uo);
+}
+
+/* --- @bound@ --- */
+
+static void un_bound(addr *a, addr_opts *ao)
+{
+ un_addr *ua = (un_addr *)a;
+ un_opts *uo = (un_opts *)ao;
+ if (fattr_apply(ua->sun.sun_path, &uo->f)) {
+ dstr d = DSTR_INIT;
+ un_print(a, ADDR_SRC, &d);
+ fw_log(-1, "[%s] couldn't apply file attributes: %s",
+ d.buf, strerror(errno));
+ dstr_destroy(&d);
+ }
+}
+
+/* --- @unbind@ --- */
+
+static void un_unbind(addr *a)
+{
+ un_addr *ua = (un_addr *)a;
+ unlink(ua->sun.sun_path);
+}
+
+/* --- Protocol definition --- */
+
+addr_ops un_ops = {
+ "unix", PF_UNIX,
+ un_read, un_destroy, un_print,
+ un_initopts, un_option, un_accept, un_freeopts, un_bound, un_unbind
+};
+
+/*----- That's all, folks -------------------------------------------------*/
~mdw / fwd / blobdiff