X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/2a74827f7d93dbf9a6fc7688c8891e5a2cbdafdc..6734d5281b0eff7a390a50a813edc8abeefc2e2e:/uslip/uslip.c

diff --git a/uslip/uslip.c b/uslip/uslip.c
index 7752458c..629da123 100644
--- a/uslip/uslip.c
+++ b/uslip/uslip.c
@@ -9,19 +9,18 @@
  *
  * This file is part of Trivial IP Encryption (TrIPE).
  *
- * TrIPE 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.
+ * TrIPE 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.
  *
- * TrIPE 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.
+ * TrIPE 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 TrIPE; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * along with TrIPE.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 /*----- Header files ------------------------------------------------------*/
@@ -55,6 +54,7 @@
 #include <mLib/quis.h>
 #include <mLib/report.h>
 #include <mLib/sel.h>
+#include <mLib/sig.h>
 #include <mLib/sub.h>
 #include <mLib/tv.h>
 
@@ -461,6 +461,16 @@ static void done_slip_dribble(dribbler *d, int err, void *hunoz)
     cripple_dribbler(d);
 }
 
+static void close_slip(int fd)
+{
+  switch (slipstate) {
+    case SYNC1: case SYNC2: case START: case BAD: break;
+    default: moan("eof found while processing packet (discarding)"); break;
+  }
+  close(fd); sel_rmfile(&slip_in);
+  reasons--;
+}
+
 static void do_slip_in(int fd, unsigned mode, void *hunoz)
 {
   ssize_t i, n;
@@ -477,19 +487,7 @@ static void do_slip_in(int fd, unsigned mode, void *hunoz)
   for (;;) {
     n = read(fd, buf, sizeof(buf));
     if (n == 0) {
-      switch (slipstate) {
-	case SYNC1:
-	case SYNC2:
-	case START:
-	case BAD:
-	  break;
-	default:
-	  moan("eof found while processing packet (discarding)");
-	  break;
-      }
-      close(fd);
-      sel_rmfile(&slip_in);
-      reasons--;
+      close_slip(fd);
       return;
     } else if (n < 0) {
       if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
@@ -572,11 +570,15 @@ static void do_slip_in(int fd, unsigned mode, void *hunoz)
   }
 }
 
+static void slip_term(int n, void *fdp)
+  { close_slip(*(int *)fdp); }
+
 static void slipif(void)
 {
   int fd;
   dstr d = DSTR_INIT;
   struct sockaddr_un sun;
+  sig term;
   size_t sz;
 
   /* --- Make the socket --- */
@@ -601,6 +603,11 @@ static void slipif(void)
   dribble_out = make_dribbler(STDOUT_FILENO, done_slip_dribble, 0);
   sel_addfile(&slip_in);
 
+  sig_init(&sel);
+  sig_add(&term, SIGTERM, slip_term, &fd);
+  sig_add(&term, SIGHUP, slip_term, &fd);
+  sig_add(&term, SIGINT, slip_term, &fd);
+
   initqueue(&q_in);
   reasons++;
 
@@ -614,7 +621,7 @@ static void slipif(void)
   /* --- Main loop --- */
 
   while (reasons) {
-    if (sel_select(&sel))
+    if (sel_select(&sel) && errno != EINTR)
       die(EXIT_FAILURE, "select: %s", strerror(errno));
   }