Tweak domain-specific servers and DNSSEC code to treat

servers for plain names (server=//1.2.3.4) as domain-specific.

This means that if we fail to get a DS record for such a query,
it gets given the benefit of the doubt.

Updates 57f0489f38

src/cache.c

@@ -2360,6 +2360,8 @@ void log_query(unsigned int flags, char *name, union all_addr *addr, char *arg,
     source = "reply";
   else if (flags & F_AUTH)
     source = "auth";
+  else if (flags & F_QUERY)
+    source = "query";
   else if (flags & F_SECSTAT)
     {
       if (addr && addr->log.ede != EDE_UNSET && option_bool(OPT_EXTRALOG))
@@ -2400,8 +2402,8 @@ void log_query(unsigned int flags, char *name, union all_addr *addr, char *arg,
 	  source = "non-query opcode";
 	  name = opcodestring;
 	}
-      else if (!(flags & F_AUTH))
-	source = "query";
+      else if (type > 0)
+	source = querystr(source, type);
       
       verb = "from";
     }

src/config.h

@@ -349,7 +349,6 @@ HAVE_SOCKADDR_SA_LEN
 #endif
 
 #if !defined(HAVE_LINUX_NETWORK)
-#undef HAVE_IPSET
 #undef HAVE_NFTSET
 #endif
 
@@ -357,6 +356,16 @@ HAVE_SOCKADDR_SA_LEN
 #undef HAVE_IPSET
 #endif
 
+#if defined(HAVE_IPSET)
+#  if defined(HAVE_LINUX_NETWORK)
+#    define HAVE_LINUX_IPSET
+#  elif defined(HAVE_BSD_NETWORK)
+#    define HAVE_BSD_IPSET
+#  else
+#    undef HAVE_IPSET
+#  endif
+#endif
+
 #ifdef NO_LOOP
 #undef HAVE_LOOP
 #endif

src/domain-match.c

@@ -244,7 +244,10 @@ int lookup_domain(char *domain, int flags, int *lowout, int *highout)
   if (nodots &&
       (daemon->serverarray[daemon->serverarraysz-1]->flags & SERV_FOR_NODOTS) &&
       (nlow == nhigh || daemon->serverarray[nlow]->domain_len == 0))
-    filter_servers(daemon->serverarraysz-1, flags, &nlow, &nhigh);
+    {
+      filter_servers(daemon->serverarraysz-1, flags, &nlow, &nhigh);
+      qlen = 0;
+    }
   
   if (lowout)
     *lowout = nlow;
@@ -343,7 +346,8 @@ int filter_servers(int seed, int flags, int *lowout, int *highout)
 		      else
 			{
 			  /* If we want a server for a particular domain, and this one isn't, return nothing. */
-			  if (nlow != nhigh && (flags & F_DOMAINSRV) && daemon->serverarray[nlow]->domain_len == 0)
+			  if (nlow < daemon->serverarraysz && nlow != nhigh && (flags & F_DOMAINSRV) &&
+			      daemon->serverarray[nlow]->domain_len == 0 && !(daemon->serverarray[nlow]->flags & SERV_FOR_NODOTS))
 			    nlow = nhigh;
 			}
 		    }

src/inotify.c

@@ -137,14 +137,14 @@ static struct hostsfile *dyndir_addhosts(struct dyndir *dd, char *file)
 {
   /* Check if this file is already known in dd->files */
   struct hostsfile *ah;
-  size_t dirlen = sizeof(dd->dname);
+  size_t dirlen = strlen(dd->dname);
   
   /* ah->fname always starts with the string in dd->dname */
   for (ah = dd->files; ah; ah = ah->next)
-    if (ah->fname[dirlen+2] == '/' &&
-        strcmp(&ah->fname[dirlen+3], file) == 0)
+    if (ah->fname[dirlen] == '/' &&
+        strcmp(&ah->fname[dirlen+1], file) == 0)
       return ah;
-  
+        
   /* Not known, create new hostsfile record for this dyndir */
   if ((ah = whine_malloc(sizeof(struct hostsfile))))
     {

src/ipset.c

@@ -16,7 +16,7 @@
 
 #include "dnsmasq.h"
 
-#if defined(HAVE_IPSET)
+#if defined(HAVE_LINUX_IPSET)
 
 #include <string.h>
 #include <errno.h>

src/option.c

@@ -2917,13 +2917,17 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
       break;
 
 #ifdef HAVE_DHCP
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+# if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
+# endif
     case LOPT_LEASEQUERY:
       set_option_bool(OPT_LEASEQUERY);
       if (!arg)
 	break;
-#pragma GCC diagnostic pop
+# if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+# pragma GCC diagnostic pop
+# endif
 #endif
     case 'B':  /* --bogus-nxdomain */
     case LOPT_IGNORE_ADDR: /* --ignore-address */

src/tables.c

@@ -18,7 +18,7 @@
 
 #include "dnsmasq.h"
 
-#if defined(HAVE_IPSET) && defined(HAVE_BSD_NETWORK)
+#if defined(HAVE_BSD_IPSET)
 
 #include <string.h>
 

src/util.c

@@ -34,6 +34,10 @@
 #include <sys/utsname.h>
 #endif
 
+#ifdef HAVE_BSD_NETWORK
+#include <libgen.h>
+#endif
+
 /* SURF random number generator */
 
 static u32 seed[32];
@@ -831,9 +835,34 @@ void close_fds(long max_fd, int spare1, int spare2, int spare3)
 #endif
 
 #ifdef FDESCFS
-  DIR *d;
+  DIR *d = NULL;
   
-  if ((d = opendir(FDESCFS)))
+#  ifdef HAVE_BSD_NETWORK
+  dev_t dirdev = 0;
+  char fdescfs[] = FDESCFS; /* string must be writable */
+  struct stat statbuf;
+
+  /* On BSD, fdescfs is normally mounted at /dev/fd. However
+     if it is NOT mounted, devfs creates a directory at /dev/fd
+     which contains (only) the file descriptors 0,1 and 2.
+
+     Under these conditions, opendir() will succeed, and
+     if we proceed we will fail to close extant
+     file descriptors which should be closed.
+     
+     Check that there is a filesystem mounted at /dev/fd
+     by checking that the device changes between /dev/fd
+     and /dev. If if doesn't, fall back to the dumb path. */
+  
+  if (stat(fdescfs, &statbuf) != -1)
+    dirdev = statbuf.st_dev;
+
+  if (stat(dirname(fdescfs), &statbuf) != -1 &&
+      dirdev != statbuf.st_dev)
+#  endif
+    d = opendir(FDESCFS);
+      
+  if (d)
     {
       struct dirent *de;
 
@@ -855,9 +884,9 @@ void close_fds(long max_fd, int spare1, int spare2, int spare3)
       
       closedir(d);
       return;
-  }
+    }
 #endif
-
+  
   /* fallback, dumb code. */
   for (max_fd--; max_fd >= 0; max_fd--)
     if (max_fd != STDOUT_FILENO && max_fd != STDERR_FILENO && max_fd != STDIN_FILENO &&