udp: Insist on only one successful default socket setup

[secnet.git] / util.c

diff --git a/util.c b/util.c
index 0215f257620b29955da29135aa332cf044bcf944..d1621fcb5acfe3534556cf17843c1c42ec4d05e6 100644 (file)
--- a/util.c
+++ b/util.c
@@ -204,7 +204,8 @@ static const char *phases[NR_PHASES]={
     "PHASE_GETRESOURCES",
     "PHASE_DROPPRIV",
     "PHASE_RUN",
-    "PHASE_SHUTDOWN"
+    "PHASE_SHUTDOWN",
+    "PHASE_CHILDPERSIST"
 };
 
 void enter_phase(uint32_t new_phase)
@@ -227,11 +228,19 @@ void phase_hooks_init(void)
        LIST_INIT(&hooks[i]);
 }
 
+void clear_phase_hooks(uint32_t phase)
+{
+    struct phase_hook *h, *htmp;
+    LIST_FOREACH_SAFE(h, &hooks[phase], entry, htmp)
+       free(h);
+    LIST_INIT(&hooks[phase]);
+}
+
 bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
 {
     struct phase_hook *h;
 
-    h=safe_malloc(sizeof(*h),"add_hook");
+    NEW(h);
     h->fn=fn;
     h->state=state;
     LIST_INSERT_HEAD(&hooks[phase],h,entry);
@@ -389,7 +398,7 @@ static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
     bool_t lockdown=False;
     uint32_t len=DEFAULT_BUFFER_SIZE;
     
-    st=safe_malloc(sizeof(*st),"buffer_apply");
+    NEW(st);
     st->cl.description="buffer";
     st->cl.type=CL_BUFFER;
     st->cl.apply=NULL;
@@ -517,6 +526,7 @@ void string_item_to_iaddr(const item_t *item, uint16_t port, union iaddr *ia,
 
     ia->sin.sin_family=AF_INET;
     ia->sin.sin_addr.s_addr=string_item_to_ipaddr(item,desc);
+    ia->sin.sin_port=htons(port);
 
 #else /* CONFIG_IPV6 => we have adns_text2addr */
 
@@ -582,19 +592,22 @@ const char *iaddr_to_string(const union iaddr *ia)
     return bufs[b];
 }
 
-bool_t iaddr_equal(const union iaddr *ia, const union iaddr *ib)
+bool_t iaddr_equal(const union iaddr *ia, const union iaddr *ib,
+                  bool_t ignoreport)
 {
     if (ia->sa.sa_family != ib->sa.sa_family)
        return 0;
     switch (ia->sa.sa_family) {
     case AF_INET:
        return ia->sin.sin_addr.s_addr == ib->sin.sin_addr.s_addr
-           && ia->sin.sin_port        == ib->sin.sin_port;
+           && (ignoreport ||
+              ia->sin.sin_port        == ib->sin.sin_port);
 #ifdef CONFIG_IPV6
     case AF_INET6:
        return !memcmp(&ia->sin6.sin6_addr, &ib->sin6.sin6_addr, 16)
-           && ia->sin6.sin6_scope_id  == ib->sin6.sin6_scope_id
-           && ia->sin6.sin6_port      == ib->sin6.sin6_port
+          &&  ia->sin6.sin6_scope_id  == ib->sin6.sin6_scope_id
+           && (ignoreport ||
+              ia->sin6.sin6_port      == ib->sin6.sin6_port)
            /* we ignore the flowinfo field */;
 #endif /* CONFIG_IPV6 */
     default:
@@ -613,6 +626,17 @@ int iaddr_socklen(const union iaddr *ia)
     }
 }
 
+const char *pollbadbit(int revents)
+{
+#define BADBIT(b) \
+    if ((revents & b)) return #b
+    BADBIT(POLLERR);
+    BADBIT(POLLHUP);
+    /* POLLNVAL is handled by the event loop - see afterpoll_fn comment */
+#undef BADBIT
+    return 0;
+}
+
 enum async_linebuf_result
 async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
                   const char **emsg_out)
@@ -620,12 +644,9 @@ async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
     int revents=pfd->revents;
 
 #define BAD(m) do{ *emsg_out=(m); return async_linebuf_broken; }while(0)
-#define BADBIT(b) \
-    if (!(revents & b)) ; else BAD(#b)
-    BADBIT(POLLERR);
-    BADBIT(POLLHUP);
-    /* POLLNVAL is handled by the event loop - see afterpoll_fn comment */
-#undef BADBIT
+
+    const char *badbit=pollbadbit(revents);
+    if (badbit) BAD(badbit);
 
     if (!(revents & POLLIN))
        return async_linebuf_nothing;