addrfam: Make SIN, SIN6 more regular

[adns.git] / src / event.c

diff --git a/src/event.c b/src/event.c
index ee4e5f7a8553c6c1c2c3cee138f662988b4d412d..ce5276ffd5bcac759771fcbcad13c3d826fa70d6 100644 (file)
--- a/src/event.c
+++ b/src/event.c
@@ -286,7 +286,7 @@ void adns_firsttimeout(adns_state ads,
                       struct timeval now) {
   adns__consistency(ads,0,cc_entex);
   adns__timeouts(ads, 0, tv_io,tvbuf, now);
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
 }
 
 void adns_processtimeouts(adns_state ads, const struct timeval *now) {
@@ -295,7 +295,7 @@ void adns_processtimeouts(adns_state ads, const struct timeval *now) {
   adns__consistency(ads,0,cc_entex);
   adns__must_gettimeofday(ads,&now,&tv_buf);
   if (now) adns__timeouts(ads, 1, 0,0, *now);
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
 }
 
 /* fd handling functions.  These are the top-level of the real work of
@@ -304,35 +304,46 @@ void adns_processtimeouts(adns_state ads, const struct timeval *now) {
 
 int adns__pollfds(adns_state ads, struct pollfd pollfds_buf[MAX_POLLFDS]) {
   /* Returns the number of entries filled in.  Always zeroes revents. */
+  int nwanted=0;
+#define ADD_POLLFD(wantfd, wantevents) do{     \
+    pollfds_buf[nwanted].fd= (wantfd);         \
+    pollfds_buf[nwanted].events= (wantevents); \
+    pollfds_buf[nwanted].revents= 0;           \
+    nwanted++;                                 \
+  }while(0)
 
-  assert(MAX_POLLFDS==2);
+  int i;
 
-  pollfds_buf[0].fd= ads->udpsocket;
-  pollfds_buf[0].events= POLLIN;
-  pollfds_buf[0].revents= 0;
+  assert(MAX_POLLFDS == MAXUDP + 1);
+
+  for (i=0; i<ads->nudp; i++)
+    ADD_POLLFD(ads->udpsocket[i].fd, POLLIN);
 
   switch (ads->tcpstate) {
   case server_disconnected:
   case server_broken:
-    return 1;
+    break;
   case server_connecting:
-    pollfds_buf[1].events= POLLOUT;
+    ADD_POLLFD(ads->tcpsocket, POLLOUT);
     break;
   case server_ok:
-    pollfds_buf[1].events=
-      ads->tcpsend.used ? POLLIN|POLLOUT|POLLPRI : POLLIN|POLLPRI;
+    ADD_POLLFD(ads->tcpsocket,
+              ads->tcpsend.used ? POLLIN|POLLOUT|POLLPRI : POLLIN|POLLPRI);
     break;
   default:
     abort();
   }
-  pollfds_buf[1].fd= ads->tcpsocket;
-  return 2;
+  assert(nwanted<=MAX_POLLFDS);
+#undef ADD_POLLFD
+  return nwanted;
 }
 
 int adns_processreadable(adns_state ads, int fd, const struct timeval *now) {
-  int want, dgramlen, r, udpaddrlen, serv, old_skip;
+  int want, dgramlen, r, i, udpaddrlen, serv, old_skip;
   byte udpbuf[DNS_MAXUDP];
-  struct sockaddr_in udpaddr;
+  char addrbuf[ADNS_ADDR2TEXT_BUFLEN];
+  struct udpsocket *udp;
+  adns_sockaddr udpaddr;
   
   adns__consistency(ads,0,cc_entex);
 
@@ -385,51 +396,37 @@ int adns_processreadable(adns_state ads, int fd, const struct timeval *now) {
   default:
     abort();
   }
-  if (fd == ads->udpsocket) {
-    for (;;) {
-      udpaddrlen= sizeof(udpaddr);
-      r= recvfrom(ads->udpsocket,udpbuf,sizeof(udpbuf),0,
-                 (struct sockaddr*)&udpaddr,&udpaddrlen);
-      if (r<0) {
-       if (errno == EAGAIN || errno == EWOULDBLOCK) { r= 0; goto xit; }
-       if (errno == EINTR) continue;
-       if (errno_resources(errno)) { r= errno; goto xit; }
-       adns__warn(ads,-1,0,"datagram receive error: %s",strerror(errno));
-       r= 0; goto xit;
-      }
-      if (udpaddrlen != sizeof(udpaddr)) {
-       adns__diag(ads,-1,0,"datagram received with wrong address length %d"
-                  " (expected %lu)", udpaddrlen,
-                  (unsigned long)sizeof(udpaddr));
-       continue;
-      }
-      if (udpaddr.sin_family != AF_INET) {
-       adns__diag(ads,-1,0,"datagram received with wrong protocol family"
-                  " %u (expected %u)",udpaddr.sin_family,AF_INET);
-       continue;
-      }
-      if (ntohs(udpaddr.sin_port) != DNS_PORT) {
-       adns__diag(ads,-1,0,"datagram received from wrong port"
-                  " %u (expected %u)", ntohs(udpaddr.sin_port),DNS_PORT);
-       continue;
-      }
-      for (serv= 0;
-          serv < ads->nservers &&
-            (assert(ads->servers[serv].addr.sa.sa_family==AF_INET),
-             ads->servers[serv].addr.inet.sin_addr.s_addr !=
-               udpaddr.sin_addr.s_addr);
-          serv++);
-      if (serv >= ads->nservers) {
-       adns__warn(ads,-1,0,"datagram received from unknown nameserver %s",
-                  inet_ntoa(udpaddr.sin_addr));
-       continue;
+  for (i=0; i<ads->nudp; i++) {
+    udp= &ads->udpsocket[i];
+    if (fd == udp->fd) {
+      for (;;) {
+       udpaddrlen= sizeof(udpaddr);
+       r= recvfrom(fd,udpbuf,sizeof(udpbuf),0, &udpaddr.sa,&udpaddrlen);
+       if (r<0) {
+         if (errno == EAGAIN || errno == EWOULDBLOCK) { r= 0; goto xit; }
+         if (errno == EINTR) continue;
+         if (errno_resources(errno)) { r= errno; goto xit; }
+         adns__warn(ads,-1,0,"datagram receive error: %s",strerror(errno));
+         r= 0; goto xit;
+       }
+       for (serv= 0;
+            serv < ads->nservers &&
+              !adns__sockaddrs_equal(&udpaddr.sa,
+                                     &ads->servers[serv].addr.sa);
+            serv++);
+       if (serv >= ads->nservers) {
+         adns__warn(ads,-1,0,"datagram received from unknown nameserver %s",
+                    adns__sockaddr_ntoa(&udpaddr.sa, addrbuf));
+         continue;
+       }
+       adns__procdgram(ads,udpbuf,r,serv,0,*now);
       }
-      adns__procdgram(ads,udpbuf,r,serv,0,*now);
+      break;
     }
   }
   r= 0;
 xit:
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return r;
 }
 
@@ -486,7 +483,7 @@ int adns_processwriteable(adns_state ads, int fd, const struct timeval *now) {
   }
   r= 0;
 xit:
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return r;
 }
   
@@ -505,7 +502,7 @@ int adns_processexceptional(adns_state ads, int fd,
   default:
     abort();
   }
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return 0;
 }
 
@@ -582,7 +579,7 @@ void adns_beforeselect(adns_state ads, int *maxfd_io, fd_set *readfds_io,
   *maxfd_io= maxfd;
 
 xit:
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
 }
 
 void adns_afterselect(adns_state ads, int maxfd, const fd_set *readfds,
@@ -604,7 +601,7 @@ void adns_afterselect(adns_state ads, int maxfd, const fd_set *readfds,
                 maxfd,readfds,writefds,exceptfds,
                 *now, 0);
 xit:
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
 }
 
 /* General helpful functions. */
@@ -626,7 +623,7 @@ void adns_globalsystemfailure(adns_state ads) {
   default:
     abort();
   }
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
 }
 
 int adns_processany(adns_state ads) {
@@ -651,7 +648,7 @@ int adns_processany(adns_state ads) {
                 0,0,0,0,
                 now,&r);
 
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return 0;
 }
 
@@ -715,7 +712,7 @@ int adns_wait(adns_state ads,
       adns_afterselect(ads,maxfd,&readfds,&writefds,&exceptfds,0);
     }
   }
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return r;
 }
 
@@ -731,6 +728,6 @@ int adns_check(adns_state ads,
   if (!r) adns__autosys(ads,now);
 
   r= adns__internal_check(ads,query_io,answer_r,context_r);
-  adns__consistency(ads,0,cc_entex);
+  adns__returning(ads,0);
   return r;
 }