X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Finternal.h;h=89327ec89fb785396cedf19af3d41d79a0062daf;hb=94be415aea9fb1e252a9a51af34dce5bdb7d115a;hp=a287d065ebcf3c787d4a264c1ca16cf6af62ca0a;hpb=8b3d55e3d8df616f6fa6d9089a9c9e567229e17b;p=adns.git

diff --git a/src/internal.h b/src/internal.h
index a287d06..89327ec 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -5,7 +5,12 @@
  * - comments regarding library data structures
  */
 /*
- *  This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
+ *  This file is
+ *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *
+ *  It is part of adns, which is
+ *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *    Copyright (C) 1999 Tony Finch <dot@dotat.at>
  *  
  *  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
@@ -33,6 +38,7 @@ typedef unsigned char byte;
 #include <unistd.h>
 #include <signal.h>
 #include <errno.h>
+#include <string.h>
 
 #include <sys/time.h>
 
@@ -58,6 +64,12 @@ typedef unsigned char byte;
 
 #define MAX_POLLFDS  ADNS_POLLFDS_RECOMMENDED
 
+typedef enum {
+  cc_user,
+  cc_entex,
+  cc_freq
+} consistency_checks;
+
 typedef enum {
   rcode_noerror,
   rcode_formaterror,
@@ -151,7 +163,7 @@ typedef struct {
 
 struct adns__query {
   adns_state ads;
-  enum { query_udp, query_tcpwait, query_tcpsent, query_child, query_done } state;
+  enum { query_tosend, query_tcpwait, query_tcpsent, query_child, query_done } state;
   adns_query back, next, parent;
   struct { adns_query head, tail; } children;
   struct { adns_query back, next; } siblings;
@@ -205,14 +217,14 @@ struct adns__query {
 
   /* Possible states:
    *
-   *  state   Queue   child  id   nextudpserver  sentudp     failedtcp
+   *  state   Queue   child  id   nextudpserver  udpsent     tcpfailed
    *				  
-   *  udp     NONE    null   >=0  0              zero        zero
-   *  udp     timew   null   >=0  any            nonzero     zero
-   *  udp     NONE    null   >=0  any            nonzero     zero
+   *  tosend  NONE    null   >=0  0              zero        zero
+   *  tosend  timew   null   >=0  any            nonzero     zero
+   *  tosend  NONE    null   >=0  any            nonzero     zero
    *				  
-   *  tcpwait timew   null   >=0  irrelevant     zero        any
-   *  tcpsent timew   null   >=0  irrelevant     zero        any
+   *  tcpwait timew   null   >=0  irrelevant     any         any
+   *  tcpsent timew   null   >=0  irrelevant     any         any
    *				  
    *  child   childw  set    >=0  irrelevant     irrelevant  irrelevant
    *  child   NONE    null   >=0  irrelevant     irrelevant  irrelevant
@@ -285,6 +297,7 @@ struct adns__state {
 /* From setup.c: */
 
 int adns__setnonblock(adns_state ads, int fd); /* => errno value */
+void adns__checkqueues(adns_state ads); /* expensive walk, for checking */
 
 /* From general.c: */
 
@@ -363,11 +376,14 @@ void adns__query_tcp(adns_query qu, struct timeval now);
  * reestablishment and retry.
  */
 
-void adns__query_udp(adns_query qu, struct timeval now);
-/* Query must be in state udp/NONE; it will be moved to a new state,
+void adns__query_send(adns_query qu, struct timeval now);
+/* Query must be in state tosend/NONE; it will be moved to a new state,
  * and no further processing can be done on it for now.
  * (Resulting state is one of udp/timew, tcpwait/timew (if server not connected),
  *  tcpsent/timew, child/childw or done/output.)
+ * __query_send may decide to use either UDP or TCP depending whether
+ * _qf_usevc is set (or has become set) and whether the query is too
+ * large.
  */
 
 /* From query.c: */
@@ -390,12 +406,14 @@ adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
  * child will already have been taken off both the global list of
  * queries in ads and the list of children in the parent.  The child
  * will be freed when the callback returns.  The parent will have been
- * taken off the global childw queue iff this is the last child for
- * that parent.  If there is no error detected in the callback, then
- * it should call adns__query_done if and only if there are no more
- * children (by checking parent->children.head).  If an error is
- * detected in the callback it should call adns__query_fail and any
- * remaining children will automatically be cancelled.
+ * taken off the global childw queue.
+ *
+ * The callback should either call adns__query_done, if it is
+ * complete, or adns__query_fail, if an error has occurred, in which
+ * case the other children (if any) will be cancelled.  If the parent
+ * has more unfinished children (or has just submitted more) then the
+ * callback may choose to wait for them - it must then put the parent
+ * back on the childw queue.
  */
 
 void adns__search_next(adns_state ads, adns_query qu, struct timeval now);
@@ -473,7 +491,7 @@ void adns__query_fail(adns_query qu, adns_status stat);
 /* From reply.c: */
 
 void adns__procdgram(adns_state ads, const byte *dgram, int len,
-		     int serv, struct timeval now);
+		     int serv, int viatcp, struct timeval now);
 
 /* From types.c: */
 
@@ -626,6 +644,14 @@ void adns__fdevents(adns_state ads,
 		    int maxfd, const fd_set *readfds,
 		    const fd_set *writefds, const fd_set *exceptfds,
 		    struct timeval now, int *r_r);
+int adns__internal_check(adns_state ads,
+			 adns_query *query_io,
+			 adns_answer **answer,
+			 void **context_r);
+
+/* From check.c: */
+
+void adns__consistency(adns_state ads, adns_query qu, consistency_checks cc);
 
 /* Useful static inline functions: */
 
@@ -644,6 +670,7 @@ static inline int ctype_digit(int c) { return c>='0' && c<='9'; }
 static inline int ctype_alpha(int c) {
   return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
 }
+static inline int ctype_822special(int c) { return strchr("()<>@,;:\\\".[]",c) != 0; }
 
 static inline int errno_resources(int e) { return e==ENOMEM || e==ENOBUFS; }