From 15ea792c424fc1daa2e36e63c5c7474a45b73161 Mon Sep 17 00:00:00 2001
From: Robert James Kaes <rjkaes@users.sourceforge.net>
Date: Tue, 12 Sep 2000 00:38:47 +0000
Subject: We don't use ADNS anymore so get rid of the tree.

---
 adns-0.6/src/query.c | 540 ---------------------------------------------------
 1 file changed, 540 deletions(-)
 delete mode 100644 adns-0.6/src/query.c

(limited to 'adns-0.6/src/query.c')

diff --git a/adns-0.6/src/query.c b/adns-0.6/src/query.c
deleted file mode 100644
index 37306d1..0000000
--- a/adns-0.6/src/query.c
+++ /dev/null
@@ -1,540 +0,0 @@
-/*
- * query.c
- * - overall query management (allocation, completion)
- * - per-query memory management
- * - query submission and cancellation (user-visible and internal)
- */
-/*
- *  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
- *  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. 
- */
-
-#include "internal.h"
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include <sys/time.h>
-
-#include "internal.h"
-
-static adns_query query_alloc(adns_state ads, const typeinfo *typei,
-			      adns_queryflags flags, struct timeval now) {
-  /* Allocate a virgin query and return it. */
-  adns_query qu;
-  
-  qu= malloc(sizeof(*qu));  if (!qu) return 0;
-  qu->answer= malloc(sizeof(*qu->answer));  if (!qu->answer) { free(qu); return 0; }
-  
-  qu->ads= ads;
-  qu->state= query_tosend;
-  qu->back= qu->next= qu->parent= 0;
-  LIST_INIT(qu->children);
-  LINK_INIT(qu->siblings);
-  LIST_INIT(qu->allocations);
-  qu->interim_allocd= 0;
-  qu->preserved_allocd= 0;
-  qu->final_allocspace= 0;
-
-  qu->typei= typei;
-  qu->query_dgram= 0;
-  qu->query_dglen= 0;
-  adns__vbuf_init(&qu->vb);
-
-  qu->cname_dgram= 0;
-  qu->cname_dglen= qu->cname_begin= 0;
-
-  adns__vbuf_init(&qu->search_vb);
-  qu->search_origlen= qu->search_pos= qu->search_doneabs= 0;
-
-  qu->id= 0;
-  qu->flags= flags;
-  qu->retries= 0;
-  qu->udpnextserver= 0;
-  qu->udpsent= 0;
-  timerclear(&qu->timeout);
-  qu->expires= now.tv_sec + MAXTTLBELIEVE;
-
-  memset(&qu->ctx,0,sizeof(qu->ctx));
-
-  qu->answer->status= adns_s_ok;
-  qu->answer->cname= qu->answer->owner= 0;
-  qu->answer->type= typei->type;
-  qu->answer->expires= -1;
-  qu->answer->nrrs= 0;
-  qu->answer->rrs.untyped= 0;
-  qu->answer->rrsz= typei->rrsz;
-
-  return qu;
-}
-
-static void query_submit(adns_state ads, adns_query qu,
-			 const typeinfo *typei, vbuf *qumsg_vb, int id,
-			 adns_queryflags flags, struct timeval now) {
-  /* Fills in the query message in for a previously-allocated query,
-   * and submits it.  Cannot fail.  Takes over the memory for qumsg_vb.
-   */
-
-  qu->vb= *qumsg_vb;
-  adns__vbuf_init(qumsg_vb);
-
-  qu->query_dgram= malloc(qu->vb.used);
-  if (!qu->query_dgram) { adns__query_fail(qu,adns_s_nomemory); return; }
-  
-  qu->id= id;
-  qu->query_dglen= qu->vb.used;
-  memcpy(qu->query_dgram,qu->vb.buf,qu->vb.used);
-  
-  adns__query_send(qu,now);
-}
-
-adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
-				  const typeinfo *typei, vbuf *qumsg_vb, int id,
-				  adns_queryflags flags, struct timeval now,
-				  const qcontext *ctx) {
-  adns_query qu;
-
-  qu= query_alloc(ads,typei,flags,now);
-  if (!qu) { adns__vbuf_free(qumsg_vb); return adns_s_nomemory; }
-  *query_r= qu;
-
-  memcpy(&qu->ctx,ctx,sizeof(qu->ctx));
-  query_submit(ads,qu, typei,qumsg_vb,id,flags,now);
-  
-  return adns_s_ok;
-}
-
-static void query_simple(adns_state ads, adns_query qu,
-			 const char *owner, int ol,
-			 const typeinfo *typei, adns_queryflags flags,
-			 struct timeval now) {
-  vbuf vb;
-  int id;
-  adns_status stat;
-
-  vb= qu->vb;
-  
-  stat= adns__mkquery(ads,&vb,&id, owner,ol, typei,flags);
-  if (stat) { adns__query_fail(qu,stat); return; }
-
-  query_submit(ads,qu, typei,&vb,id, flags,now);
-}
-
-void adns__search_next(adns_state ads, adns_query qu, struct timeval now) {
-  const char *nextentry;
-  adns_status stat;
-  
-  if (qu->search_doneabs<0) {
-    nextentry= 0;
-    qu->search_doneabs= 1;
-  } else {
-    if (qu->search_pos >= ads->nsearchlist) {
-      if (qu->search_doneabs) {
-	stat= adns_s_nxdomain; goto x_fail;
-	return;
-      } else {
-	nextentry= 0;
-	qu->search_doneabs= 1;
-      }
-    } else {
-      nextentry= ads->searchlist[qu->search_pos++];
-    }
-  }
-
-  qu->search_vb.used= qu->search_origlen;
-  if (nextentry) {
-    if (!adns__vbuf_append(&qu->search_vb,".",1) ||
-	!adns__vbuf_appendstr(&qu->search_vb,nextentry)) {
-      stat= adns_s_nomemory; goto x_fail;
-    }
-  }
-
-  free(qu->query_dgram);
-  qu->query_dgram= 0; qu->query_dglen= 0;
-
-  query_simple(ads,qu, qu->search_vb.buf, qu->search_vb.used, qu->typei, qu->flags, now);
-  return;
-  
-x_fail:
-  adns__query_fail(qu,stat);
-}
-
-static int save_owner(adns_query qu, const char *owner, int ol) {
-  /* Returns 1 if OK, otherwise there was no memory. */
-  adns_answer *ans;
-
-  ans= qu->answer;
-  assert(!ans->owner);
-
-  ans->owner= adns__alloc_preserved(qu,ol+1);  if (!ans->owner) return 0;
-
-  memcpy(ans->owner,owner,ol);
-  ans->owner[ol]= 0;
-  return 1;
-}
-
-int adns_submit(adns_state ads,
-		const char *owner,
-		adns_rrtype type,
-		adns_queryflags flags,
-		void *context,
-		adns_query *query_r) {
-  int r, ol, ndots;
-  adns_status stat;
-  const typeinfo *typei;
-  struct timeval now;
-  adns_query qu;
-  const char *p;
-
-  adns__consistency(ads,0,cc_entex);
-
-  typei= adns__findtype(type);
-  if (!typei) return ENOSYS;
-
-  r= gettimeofday(&now,0); if (r) goto x_errno;
-  qu= query_alloc(ads,typei,flags,now); if (!qu) goto x_errno;
-  
-  qu->ctx.ext= context;
-  qu->ctx.callback= 0;
-  memset(&qu->ctx.info,0,sizeof(qu->ctx.info));
-
-  *query_r= qu;
-
-  ol= strlen(owner);
-  if (!ol) { stat= adns_s_querydomaininvalid; goto x_adnsfail; }
-  if (ol>DNS_MAXDOMAIN+1) { stat= adns_s_querydomaintoolong; goto x_adnsfail; }
-				 
-  if (ol>=1 && owner[ol-1]=='.' && (ol<2 || owner[ol-2]!='\\')) {
-    flags &= ~adns_qf_search;
-    qu->flags= flags;
-    ol--;
-  }
-
-  if (flags & adns_qf_search) {
-    r= adns__vbuf_append(&qu->search_vb,owner,ol);
-    if (!r) { stat= adns_s_nomemory; goto x_adnsfail; }
-
-    for (ndots=0, p=owner; (p= strchr(p,'.')); p++, ndots++);
-    qu->search_doneabs= (ndots >= ads->searchndots) ? -1 : 0;
-    qu->search_origlen= ol;
-    adns__search_next(ads,qu,now);
-  } else {
-    if (flags & adns_qf_owner) {
-      if (!save_owner(qu,owner,ol)) { stat= adns_s_nomemory; goto x_adnsfail; }
-    }
-    query_simple(ads,qu, owner,ol, typei,flags, now);
-  }
-  adns__autosys(ads,now);
-  adns__consistency(ads,qu,cc_entex);
-  return 0;
-
- x_adnsfail:
-  adns__query_fail(qu,stat);
-  adns__consistency(ads,qu,cc_entex);
-  return 0;
-
- x_errno:
-  r= errno;
-  assert(r);
-  adns__consistency(ads,0,cc_entex);
-  return r;
-}
-
-int adns_submit_reverse(adns_state ads,
-			const struct sockaddr *addr,
-			adns_rrtype type,
-			adns_queryflags flags,
-			void *context,
-			adns_query *query_r) {
-  const unsigned char *iaddr;
-  char buf[30];
-
-  if (type != adns_r_ptr && type != adns_r_ptr_raw) return EINVAL;
-  flags &= ~adns_qf_search;
-
-  if (addr->sa_family != AF_INET) return ENOSYS;
-  iaddr= (const unsigned char*) &(((const struct sockaddr_in*)addr) -> sin_addr);
-
-  sprintf(buf, "%d.%d.%d.%d.in-addr.arpa",
-	  iaddr[3], iaddr[2], iaddr[1], iaddr[0]);
-
-  return adns_submit(ads,buf,type,flags,context,query_r);
-}
-
-int adns_synchronous(adns_state ads,
-		     const char *owner,
-		     adns_rrtype type,
-		     adns_queryflags flags,
-		     adns_answer **answer_r) {
-  adns_query qu;
-  int r;
-  
-  r= adns_submit(ads,owner,type,flags,0,&qu);
-  if (r) return r;
-
-  r= adns_wait(ads,&qu,answer_r,0);
-  if (r) adns_cancel(qu);
-
-  return r;
-}
-
-static void *alloc_common(adns_query qu, size_t sz) {
-  allocnode *an;
-
-  if (!sz) return qu; /* Any old pointer will do */
-  assert(!qu->final_allocspace);
-  an= malloc(MEM_ROUND(MEM_ROUND(sizeof(*an)) + sz));
-  if (!an) return 0;
-  LIST_LINK_TAIL(qu->allocations,an);
-  return (byte*)an + MEM_ROUND(sizeof(*an));
-}
-
-void *adns__alloc_interim(adns_query qu, size_t sz) {
-  void *rv;
-  
-  sz= MEM_ROUND(sz);
-  rv= alloc_common(qu,sz);
-  if (!rv) return 0;
-  qu->interim_allocd += sz;
-  return rv;
-}
-
-void *adns__alloc_preserved(adns_query qu, size_t sz) {
-  void *rv;
-  
-  sz= MEM_ROUND(sz);
-  rv= adns__alloc_interim(qu,sz);
-  if (!rv) return 0;
-  qu->preserved_allocd += sz;
-  return rv;
-}
-
-void *adns__alloc_mine(adns_query qu, size_t sz) {
-  return alloc_common(qu,MEM_ROUND(sz));
-}
-
-void adns__transfer_interim(adns_query from, adns_query to, void *block, size_t sz) {
-  allocnode *an;
-
-  if (!block) return;
-  an= (void*)((byte*)block - MEM_ROUND(sizeof(*an)));
-
-  assert(!to->final_allocspace);
-  assert(!from->final_allocspace);
-  
-  LIST_UNLINK(from->allocations,an);
-  LIST_LINK_TAIL(to->allocations,an);
-
-  from->interim_allocd -= sz;
-  to->interim_allocd += sz;
-
-  if (to->expires > from->expires) to->expires= from->expires;
-}
-
-void *adns__alloc_final(adns_query qu, size_t sz) {
-  /* When we're in the _final stage, we _subtract_ from interim_alloc'd
-   * each allocation, and use final_allocspace to point to the next free
-   * bit.
-   */
-  void *rp;
-
-  sz= MEM_ROUND(sz);
-  rp= qu->final_allocspace;
-  assert(rp);
-  qu->interim_allocd -= sz;
-  assert(qu->interim_allocd>=0);
-  qu->final_allocspace= (byte*)rp + sz;
-  return rp;
-}
-
-static void cancel_children(adns_query qu) {
-  adns_query cqu, ncqu;
-
-  for (cqu= qu->children.head; cqu; cqu= ncqu) {
-    ncqu= cqu->siblings.next;
-    adns_cancel(cqu);
-  }
-}
-
-void adns__reset_preserved(adns_query qu) {
-  assert(!qu->final_allocspace);
-  cancel_children(qu);
-  qu->answer->nrrs= 0;
-  qu->answer->rrs.untyped= 0;
-  qu->interim_allocd= qu->preserved_allocd;
-}
-
-static void free_query_allocs(adns_query qu) {
-  allocnode *an, *ann;
-
-  cancel_children(qu);
-  for (an= qu->allocations.head; an; an= ann) { ann= an->next; free(an); }
-  LIST_INIT(qu->allocations);
-  adns__vbuf_free(&qu->vb);
-  adns__vbuf_free(&qu->search_vb);
-  free(qu->query_dgram);
-}
-
-void adns_cancel(adns_query qu) {
-  adns_state ads;
-
-  ads= qu->ads;
-  adns__consistency(ads,qu,cc_entex);
-  if (qu->parent) LIST_UNLINK_PART(qu->parent->children,qu,siblings.);
-  switch (qu->state) {
-  case query_tosend:
-    LIST_UNLINK(ads->udpw,qu);
-    break;
-  case query_tcpw:
-    LIST_UNLINK(ads->tcpw,qu);
-    break;
-  case query_childw:
-    LIST_UNLINK(ads->childw,qu);
-    break;
-  case query_done:
-    LIST_UNLINK(ads->output,qu);
-    break;
-  default:
-    abort();
-  }
-  free_query_allocs(qu);
-  free(qu->answer);
-  free(qu);
-  adns__consistency(ads,0,cc_entex);
-}
-
-void adns__update_expires(adns_query qu, unsigned long ttl, struct timeval now) {
-  time_t max;
-
-  assert(ttl <= MAXTTLBELIEVE);
-  max= now.tv_sec + ttl;
-  if (qu->expires < max) return;
-  qu->expires= max;
-}
-
-static void makefinal_query(adns_query qu) {
-  adns_answer *ans;
-  int rrn;
-
-  ans= qu->answer;
-
-  if (qu->interim_allocd) {
-    ans= realloc(qu->answer, MEM_ROUND(MEM_ROUND(sizeof(*ans)) + qu->interim_allocd));
-    if (!ans) goto x_nomem;
-    qu->answer= ans;
-  }
-
-  qu->final_allocspace= (byte*)ans + MEM_ROUND(sizeof(*ans));
-  adns__makefinal_str(qu,&ans->cname);
-  adns__makefinal_str(qu,&ans->owner);
-  
-  if (ans->nrrs) {
-    adns__makefinal_block(qu, &ans->rrs.untyped, ans->nrrs*ans->rrsz);
-
-    for (rrn=0; rrn<ans->nrrs; rrn++)
-      qu->typei->makefinal(qu, ans->rrs.bytes + rrn*ans->rrsz);
-  }
-  
-  free_query_allocs(qu);
-  return;
-  
- x_nomem:
-  qu->preserved_allocd= 0;
-  qu->answer->cname= 0;
-  qu->answer->owner= 0;
-  adns__reset_preserved(qu); /* (but we just threw away the preserved stuff) */
-
-  qu->answer->status= adns_s_nomemory;
-  free_query_allocs(qu);
-}
-
-void adns__query_done(adns_query qu) {
-  adns_answer *ans;
-  adns_query parent;
-
-  cancel_children(qu);
-
-  qu->id= -1;
-  ans= qu->answer;
-
-  if (qu->flags & adns_qf_owner && qu->flags & adns_qf_search &&
-      ans->status != adns_s_nomemory) {
-    if (!save_owner(qu, qu->search_vb.buf, qu->search_vb.used)) {
-      adns__query_fail(qu,adns_s_nomemory);
-      return;
-    }
-  }
-
-  if (ans->nrrs && qu->typei->diff_needswap) {
-    if (!adns__vbuf_ensure(&qu->vb,qu->typei->rrsz)) {
-      adns__query_fail(qu,adns_s_nomemory);
-      return;
-    }
-    adns__isort(ans->rrs.bytes, ans->nrrs, ans->rrsz,
-		qu->vb.buf,
-		(int(*)(void*, const void*, const void*))qu->typei->diff_needswap,
-		qu->ads);
-  }
-
-  ans->expires= qu->expires;
-  parent= qu->parent;
-  if (parent) {
-    LIST_UNLINK_PART(parent->children,qu,siblings.);
-    LIST_UNLINK(qu->ads->childw,parent);
-    qu->ctx.callback(parent,qu);
-    free_query_allocs(qu);
-    free(qu->answer);
-    free(qu);
-  } else {
-    makefinal_query(qu);
-    LIST_LINK_TAIL(qu->ads->output,qu);
-    qu->state= query_done;
-  }
-}
-
-void adns__query_fail(adns_query qu, adns_status stat) {
-  adns__reset_preserved(qu);
-  qu->answer->status= stat;
-  adns__query_done(qu);
-}
-
-void adns__makefinal_str(adns_query qu, char **strp) {
-  int l;
-  char *before, *after;
-
-  before= *strp;
-  if (!before) return;
-  l= strlen(before)+1;
-  after= adns__alloc_final(qu,l);
-  memcpy(after,before,l);
-  *strp= after;  
-}
-
-void adns__makefinal_block(adns_query qu, void **blpp, size_t sz) {
-  void *before, *after;
-
-  before= *blpp;
-  if (!before) return;
-  after= adns__alloc_final(qu,sz);
-  memcpy(after,before,sz);
-  *blpp= after;
-}
-- 
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