X-Git-Url: https://git.distorted.org.uk/~mdw/fwd/blobdiff_plain/c9d2d52ac41a80b0c8acf7bcae3a7aa4c6952f4e..755e6619263d316dc46fa504e0c333c963ec8eaa:/un.c

diff --git a/un.c b/un.c
index 5438617..1ee5363 100644
--- a/un.c
+++ b/un.c
@@ -1,77 +1,30 @@
 /* -*-c-*-
  *
- * $Id: un.c,v 1.3 2000/08/01 17:58:32 mdw Exp $
- *
  * Protocol specific definitions for Unix-domain sockets
  *
  * (c) 1999 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
- * This file is part of the `fw' port forwarder.
+ * This file is part of the `fwd' port forwarder.
  *
- * `fw' is free software; you can redistribute it and/or modify
+ * `fwd' 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,
+ *
+ * `fwd' 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,
+ * along with `fwd'; 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 1.3  2000/08/01 17:58:32  mdw
- * Remove unnecessary <ctype.h> header.
- *
- * Revision 1.2  1999/07/27 18:30:53  mdw
- * Various minor portability fixes.
- *
- * Revision 1.1  1999/07/26 23:34:11  mdw
- * New socket address types.
- *
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include "config.h"
-#undef sun /* Cretins */
-
-#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"
+#include "fwd.h"
 
 /*----- Data structures ---------------------------------------------------*/
 
@@ -94,7 +47,7 @@ static addr *un_read(scanner *sc, unsigned type)
   dstr d = DSTR_INIT;
   un_addr *ua;
 
-  conf_name(sc, '/', &d);
+  conf_fname(sc, &d);
   ua = xmalloc(sizeof(addr) +
 	       offsetof(struct sockaddr_un, sun_path) +
 	       d.len + 1);
@@ -112,7 +65,7 @@ static addr *un_read(scanner *sc, unsigned type)
 static void un_destroy(addr *a)
 {
   un_addr *ua = (un_addr *)a;
-  free(ua);
+  xfree(ua);
 }
 
 /* --- @print@ --- */
@@ -135,10 +88,10 @@ static addr_opts *un_initopts(void)
 
 /* --- @option@ --- */
 
-static int un_option(scanner *sc, addr_opts *ao)
+static int srcopt(scanner *sc, addr_opts *ao)
 {
   un_opts *uo = (un_opts *)ao;
-  CONF_BEGIN(sc, "unix", "Unix domain socket")
+  CONF_BEGIN(sc, "source", "Unix domain socket source")
 
   if (fattr_option(sc, uo ? &uo->f : &fattr_global))
     CONF_ACCEPT;
@@ -146,6 +99,14 @@ static int un_option(scanner *sc, addr_opts *ao)
   CONF_END;
 }
 
+static int un_option(scanner *sc, addr_opts *ao, unsigned type)
+{
+  CONF_BEGIN(sc, "unix", "Unix domain socket");
+  if (type != ADDR_DEST && srcopt(sc, ao))
+    CONF_ACCEPT;
+  CONF_END;
+}
+
 /* --- @accept@ --- */
 
 static reffd *un_accept(int fd, addr_opts *ao, const char *desc)
@@ -158,8 +119,8 @@ static reffd *un_accept(int fd, addr_opts *ao, const char *desc)
   {
     char buf[PATH_MAX + sizeof(struct sockaddr)];
     struct sockaddr_un *sun = (struct sockaddr_un *)buf;
-    int sunsz = sizeof(buf);
- 
+    socklen_t sunsz = sizeof(buf);
+
     if ((nfd = accept(fd, (struct sockaddr *)sun, &sunsz)) < 0)
       return (0);
   }
@@ -183,19 +144,26 @@ static void un_freeopts(addr_opts *ao)
   DESTROY(uo);
 }
 
-/* --- @bound@ --- */
+/* --- @bind@ --- */
 
-static void un_bound(addr *a, addr_opts *ao)
+static int un_bind(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);
-  }
+  int fd;
+
+  if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
+    goto fail_0;
+  if (bind(fd, (struct sockaddr *)&ua->sun, sizeof(ua->sun)))
+    goto fail_1;
+  if (fattr_apply(ua->sun.sun_path, &uo->f))
+    goto fail_1;
+  return (fd);
+
+fail_1:
+  close(fd);
+fail_0:
+  return (-1);
 }
 
 /* --- @unbind@ --- */
@@ -206,12 +174,28 @@ static void un_unbind(addr *a)
   unlink(ua->sun.sun_path);
 }
 
+/* --- @connect@ --- */
+
+static int un_connect(addr *a, addr_opts *ao, conn *c, endpt *e)
+{
+  un_addr *ua = (un_addr *)a;
+  int fd;
+
+  if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
+    goto fail_0;
+  return (conn_init(c, sel, fd, (struct sockaddr *)&ua->sun, sizeof(ua->sun),
+		    starget_connected, e));
+fail_0:
+  return (-1);
+}
+
 /* --- Protocol definition --- */
 
 addr_ops un_ops = {
-  "unix", PF_UNIX,
+  "unix",
   un_read, un_destroy, un_print,
-  un_initopts, un_option, un_accept, un_freeopts, un_bound, un_unbind
+  un_initopts, un_option, 0, un_freeopts, un_bind, un_unbind, un_accept,
+  0, 0, un_connect
 };
 
 /*----- That's all, folks -------------------------------------------------*/