Support transport over IPv6.

[adns.git] / src / internal.h

diff --git a/src/internal.h b/src/internal.h
index e4ec09ee00c1b2ac40126f9ddcccfc90cc657c95..2c5a073a7ea124ca4bfe02127f951be432807785 100644 (file)
--- a/src/internal.h
+++ b/src/internal.h
@@ -5,12 +5,11 @@
  * - comments regarding library data structures
  */
 /*
- *  This file is
- *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
- *
- *  It is part of adns, which is
- *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
- *    Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
+ *  This file is part of adns, which is
+ *    Copyright (C) 1997-2000,2003,2006  Ian Jackson
+ *    Copyright (C) 1999-2000,2003,2006  Tony Finch
+ *    Copyright (C) 1991 Massachusetts Institute of Technology
+ *  (See the file INSTALL for full details.)
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -70,6 +69,10 @@ typedef unsigned char byte;
 #define DNS_CLASS_IN 1
 
 #define DNS_INADDR_ARPA "in-addr", "arpa"
+#define DNS_IP6_ARPA "ip6", "arpa"
+
+#define STRINGIFY(x) REALLY_STRINGIFY(x)
+#define REALLY_STRINGIFY(x) #x
 
 #define MAX_POLLFDS  ADNS_POLLFDS_RECOMMENDED
 
@@ -113,8 +116,34 @@ typedef struct {
   struct timeval now;
 } parseinfo;
 
+union gen_addr {
+  struct in_addr v4;
+  struct in6_addr v6;
+};
+
+typedef struct {
+  int af;
+  int width;
+  int delim;
+  int nrevcomp;
+  int revcompwd;
+  adns_rrtype rrtype;
+  void *(*sockaddr_to_inaddr)(struct sockaddr *sa);
+  int (*sockaddr_equalp)(const struct sockaddr *sa,
+                        const struct sockaddr *sb);
+  void (*prefix_mask)(int len, union gen_addr *a);
+  int (*guess_len)(const union gen_addr *a);
+  int (*matchp)(const union gen_addr *addr,
+               const union gen_addr *base, const union gen_addr *mask);
+  int (*rev_parsecomp)(const char *p, size_t n);
+  void (*rev_mkaddr)(union gen_addr *addr, const byte *ipv);
+  char *(*rev_mkname)(const struct sockaddr *sa, char *buf);
+} afinfo;
+
+struct afinfo_addr { const afinfo *ai; union gen_addr addr; };
+
 typedef struct typeinfo {
-  adns_rrtype type;
+  adns_rrtype typekey;
   const char *rrtname;
   const char *fmtname;
   int rrsz;
@@ -192,7 +221,7 @@ typedef struct {
   void *ext;
   void (*callback)(adns_query parent, adns_query child);
   union {
-    adns_rr_addr ptr_parent_addr;
+    struct afinfo_addr ptr_parent_addr;
     adns_rr_hostaddr *hostaddr;
   } info;
 } qcontext;
@@ -307,6 +336,8 @@ struct adns__query {
 
 struct query_queue { adns_query head, tail; };
 
+#define MAXUDP 2
+
 struct adns__state {
   adns_initflags iflags;
   adns_logcallbackfn *logfn;
@@ -314,7 +345,9 @@ struct adns__state {
   int configerrno;
   struct query_queue udpw, tcpw, childw, output;
   adns_query forallnext;
-  int nextid, udpsocket, tcpsocket;
+  int nextid, tcpsocket;
+  struct udpsocket { const afinfo *ai; int fd; } udpsocket[MAXUDP];
+  int nudp;
   vbuf tcpsend, tcprecv;
   int nservers, nsortlist, nsearchlist, searchndots, tcpserver, tcprecv_skip;
   enum adns__tcpstate {
@@ -330,22 +363,26 @@ struct adns__state {
   struct sigaction stdsigpipe;
   sigset_t stdsigmask;
   struct pollfd pollfds_buf[MAX_POLLFDS];
-  struct server {
-    struct in_addr addr;
-  } servers[MAXSERVERS];
+  adns_rr_addr servers[MAXSERVERS];
   struct sortlist {
-    struct in_addr base, mask;
+    const afinfo *ai;
+    union gen_addr base, mask;
   } sortlist[MAXSORTLIST];
   char **searchlist;
   unsigned short rand48xsubi[3];
 };
 
+/* From addrfam.c: */
+
+extern const afinfo adns__inet_afinfo, adns__inet6_afinfo;
+
 /* From setup.c: */
 
 int adns__setnonblock(adns_state ads, int fd); /* => errno value */
 
 /* From general.c: */
 
+const char *adns__sockaddr_ntoa(struct sockaddr *sa, size_t n);
 void adns__vlprintf(adns_state ads, const char *fmt, va_list al);
 void adns__lprintf(adns_state ads, const char *fmt,
                   ...) PRINTFFORMAT(2,3);
@@ -404,7 +441,8 @@ void adns__sigpipe_unprotect(adns_state);
 
 adns_status adns__mkquery(adns_state ads, vbuf *vb, int *id_r,
                          const char *owner, int ol,
-                         const typeinfo *typei, adns_queryflags flags);
+                         const typeinfo *typei, adns_rrtype type,
+                         adns_queryflags flags);
 /* Assembles a query packet in vb.  A new id is allocated and returned.
  */