-/**/
+/*
+ * internal.h
+ * - declarations of private objects with external linkage (adns__*)
+ * - definitons of internal macros
+ * - comments regarding library data structures
+ */
+/*
+ * This file is part of adns, which is Copyright (C) 1997, 1998 Ian Jackson
+ *
+ * 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
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
#ifndef ADNS_INTERNAL_H_INCLUDED
#define ADNS_INTERNAL_H_INCLUDED
typedef struct {
adns_rrtype type;
+ const char *name;
int rrsz;
adns_status (*parse)(adns_state ads, adns_query qu, int serv,
struct { adns_query head, tail; } children;
struct { adns_query back, next; } siblings;
struct allocnode *allocations;
- int interim_alloced, final_used;
+ int interim_allocd;
+ void *final_allocspace;
const typeinfo *typei;
char *query_dgram;
/* From setup.c: */
+int adns__setnonblock(adns_state ads, int fd); /* => errno value */
+
+/* From general.c: */
+
void adns__vdiag(adns_state ads, const char *pfx, adns_initflags prevent,
- int serv, const char *fmt, va_list al);
+ int serv, adns_query qu, const char *fmt, va_list al);
void adns__debug(adns_state ads, int serv, adns_query qu,
- const char *fmt, ...) PRINTFFORMAT(3,4);
+ const char *fmt, ...) PRINTFFORMAT(4,5);
void adns__warn(adns_state ads, int serv, adns_query qu,
- const char *fmt, ...) PRINTFFORMAT(3,4);
+ const char *fmt, ...) PRINTFFORMAT(4,5);
void adns__diag(adns_state ads, int serv, adns_query qu,
- const char *fmt, ...) PRINTFFORMAT(3,4);
+ const char *fmt, ...) PRINTFFORMAT(4,5);
int adns__vbuf_ensure(vbuf *vb, int want);
int adns__vbuf_appendstr(vbuf *vb, const char *data);
void adns__vbuf_init(vbuf *vb);
void adns__vbuf_free(vbuf *vb);
-int adns__setnonblock(adns_state ads, int fd); /* => errno value */
+const char *adns__diag_domain(adns_state ads, int serv, adns_query qu, vbuf *vb,
+ int flags, const byte *dgram, int dglen, int cbyte);
+/* Unpicks a domain in a datagram and returns a string suitable for
+ * printing it as. Never fails - if an error occurs, it will
+ * return some kind of string describing the error.
+ *
+ * serv may be -1, qu may be 0. vb must have been initialised,
+ * and will be left in an arbitrary consistent state.
+ *
+ * Returns either vb->buf, or a pointer to a string literal. Do not modify
+ * vb before using the return value.
+ */
+
+/* From transmit.c: */
-/* From submit.c: */
+adns_status adns__mkquery(adns_state ads, vbuf *vb,
+ const char *owner, int ol, int *id_r,
+ const typeinfo *typei, adns_queryflags flags);
+/* Assembles a query packet in vb, and returns id at *id_r. */
+
+void adns__query_tcp(adns_state ads, adns_query qu, struct timeval now);
+/* Query must be in state tcpwait/timew; it will be moved to a new state
+ * if possible and no further processing can be done on it for now.
+ * (Resulting state is one of tcpwait/timew (if server not connected),
+ * tcpsent/timew, child/childw or done/output.)
+ *
+ * adns__tcp_tryconnect should already have been called - _tcp
+ * will only use an existing connection (if there is one), which it
+ * may break. If the conn list lost then the caller is responsible for any
+ * reestablishment and retry.
+ */
+
+void adns__query_udp(adns_state ads, adns_query qu, struct timeval now);
+/* Query must be in state udp/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.)
+ */
+
+/* From query.c: */
int adns__internal_submit(adns_state ads, adns_query *query_r,
- adns_rrtype type, char *query_dgram, int query_len,
+ adns_rrtype type, vbuf *qumsg_vb, int id,
adns_queryflags flags, struct timeval now,
adns_status failstat, const qcontext *ctx);
/* Submits a query (for internal use, called during external submits).
*
* The new query is returned in *query_r, or we return adns_s_nomemory.
*
- * The query datagram should already have been assembled; memory for it
- * is taken over by this routine whether it succeeds or fails.
+ * The query datagram should already have been assembled in qumsg_vb;
+ * the memory for it is _taken over_ by this routine whether it
+ * succeeds or fails (if it succeeds, the vbuf is reused for qu->vb).
*
* If failstat is nonzero then if we are successful in creating the query
* it is immediately failed with code failstat (but _submit still succeds).
/* Cannot fail.
*/
-/* From query.c: */
+void adns__makefinal_block(adns_query qu, void **blpp, size_t sz);
+void adns__makefinal_str(adns_query qu, char **strp);
-void adns__query_udp(adns_state ads, adns_query qu, struct timeval now);
-void adns__query_tcp(adns_state ads, adns_query qu, struct timeval now);
-adns_status adns__mkquery(adns_state ads, const char *owner, int ol, int id,
- const typeinfo *typei, adns_queryflags flags);
+void adns__reset_cnameonly(adns_state ads, adns_query qu);
+/* Resets all of the memory management stuff etc. to
+ * take account of only the CNAME. Used when we find an error somewhere
+ * and want to just report the error (with perhaps CNAME info), and also
+ * when we're halfway through RRs in a datagram and discover that we
+ * need to retry the query.
+ */
-void adns__query_ok(adns_state ads, adns_query qu);
+void adns__query_done(adns_state ads, adns_query qu);
void adns__query_fail(adns_state ads, adns_query qu, adns_status stat);
-
+
/* From reply.c: */
void adns__procdgram(adns_state ads, const byte *dgram, int len,
/* From parse.c: */
typedef struct {
- adns_state ads, int serv;
+ adns_state ads;
+ int serv;
const byte *dgram;
int dglen, max, cbyte, namelen;
int *dmend_rlater, *namelen_rlater;
void adns__tcp_broken(adns_state ads, const char *what, const char *why);
void adns__tcp_tryconnect(adns_state ads, struct timeval now);
+
void adns__autosys(adns_state ads, struct timeval now);
+/* Make all the system calls we want to if the application wants us to. */
/* Useful static inline functions: */
~mdw / adns / blobdiff