configure.ac: Hack probed Wireshark plugin dir in case of corruption.

[tripe] / uslip / uslip.c

diff --git a/uslip/uslip.c b/uslip/uslip.c
index 74a5b17eb84ff8547b8b5d6cc7b3fbe126e361a7..0ed9e70e59b8da707b681dcc203d810758ce0ef7 100644 (file)
--- a/uslip/uslip.c
+++ b/uslip/uslip.c
@@ -55,6 +55,7 @@
 #include <mLib/quis.h>
 #include <mLib/report.h>
 #include <mLib/sel.h>
+#include <mLib/sig.h>
 #include <mLib/sub.h>
 #include <mLib/tv.h>
 
@@ -135,7 +136,7 @@ static void socketaddr(struct sockaddr_un *sun, size_t *sz)
 
 static void initqueue(pkq *q) { q->head = 0; q->tail = &q->head; }
 
-static pkq_node *make_pkqnode(void *p, size_t n)
+static pkq_node *make_pkqnode(const void *p, size_t n)
 {
   pkq_node *pn;
 
@@ -195,10 +196,10 @@ static void destroy_pkq(pkq *q)
  * calls a user-supplied calback function, and quits.
  */
 
-static void gobbler_close(gobbler *g)
+static void close_gobbler(gobbler *g)
   { if (g->f.fd != -1) { sel_rmfile(&g->f); close(g->f.fd); g->f.fd = -1; } }
 
-static void gobbler_destroy(gobbler *g) { gobbler_close(g); DESTROY(g); }
+static void destroy_gobbler(gobbler *g) { close_gobbler(g); DESTROY(g); }
 
 static void do_gobble_in(int fd, unsigned mode, void *p)
 {
@@ -213,12 +214,12 @@ static void do_gobble_in(int fd, unsigned mode, void *p)
       else {
        moan("read (gobble): %s", strerror(errno));
        if (g->done) g->done(g, errno, g->p);
-       gobbler_close(g);
+       close_gobbler(g);
        break;
       }
     } else if (n == 0) {
       if (g->done) g->done(g, 0, g->p);
-      gobbler_close(g);
+      close_gobbler(g);
       break;
     }
   }
@@ -320,7 +321,7 @@ static void done_client_dribble(dribbler *d, int err, void *p)
 {
   if (err)
     moan("write (client): %s", strerror(err));
-  gobbler_destroy(p);
+  destroy_gobbler(p);
   destroy_dribbler(d);
   reasons--;
 }
@@ -345,7 +346,7 @@ static void dequeue_to_waiter(void)
   }
 }
 
-static void client_destroy(client *c)
+static void destroy_client(client *c)
 {
   sel_rmfile(&c->f);
   close(c->f.fd);
@@ -374,7 +375,7 @@ static void do_client_in(int fd, unsigned mode, void *p)
        break;
       else {
        moan("read (client): %s", strerror(errno));
-       client_destroy(c);
+       destroy_client(c);
        return;
       }
     } else if (n == 0) {
@@ -383,7 +384,7 @@ static void do_client_in(int fd, unsigned mode, void *p)
        if (enqueue_dribble(dribble_out, make_pkqnode(c->d.buf, c->d.len)))
          reasons++;
       }
-      client_destroy(c);
+      destroy_client(c);
       return;
     }
     if (c->mode == '?') {
@@ -405,7 +406,7 @@ static void do_client_in(int fd, unsigned mode, void *p)
          return;
        default:
          moan("bad client mode `%c'", buf[0]);
-         client_destroy(c);
+         destroy_client(c);
          return;
       }
     }
@@ -451,7 +452,7 @@ static void do_accept(int fd, unsigned mode, void *hunoz)
 
 /*----- Main daemon -------------------------------------------------------*/
 
-static void done_slip_dribble(dribbler *d, int err, void *p)
+static void done_slip_dribble(dribbler *d, int err, void *hunoz)
 {
   if (!err)
     reasons--;
@@ -461,6 +462,16 @@ static void done_slip_dribble(dribbler *d, int err, void *p)
     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 +488,7 @@ 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 +571,15 @@ 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 +604,10 @@ 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, SIGINT, slip_term, &fd);
+
   initqueue(&q_in);
   reasons++;
 
@@ -720,7 +727,7 @@ static void conndoconnect(conninfo *c)
 
 static int timerflag;
 
-static void conndrip(struct timeval *tv, void *p)
+static void conndrip(struct timeval *tv, void *hunoz)
 {
   conninfo *c, *cc;
 
@@ -759,7 +766,7 @@ static void connloop(void (*connected)(int, conninfo *))
 
 /* --- Sinking (glug glug) --- */
 
-static void sink_close(gobbler *g, int err, void *p)
+static void close_sink(gobbler *g, int err, void *p)
 {
   static char baton[4] = "/-\\|";
   static int pos = 0;
@@ -796,14 +803,14 @@ static void sink_connected(int fd, conninfo *c)
     connrecycle(c);
     return;
   }
-  make_gobbler(fd, sink_close, c);
+  make_gobbler(fd, close_sink, c);
 }
 
 static void sink(void) { connloop(sink_connected); }
 
 /* --- Flooding --- */
 
-static void flood_close(dribbler *d, int err, void *p)
+static void close_flood(dribbler *d, int err, void *p)
 {
   conninfo *c = p;
 
@@ -828,7 +835,7 @@ static void flood_connected(int fd, conninfo *c)
   for (i = 4; i < FLOOD_PKSZ; i++)
     pn->buf[i + 1] = i & 0xff;
   seq++;
-  d = make_dribbler(fd, flood_close, c);
+  d = make_dribbler(fd, close_flood, c);
   enqueue_dribble(d, pn);
 }