* - query submission and cancellation (user-visible and internal)
*/
/*
- * 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
#include "internal.h"
-static adns_query query_alloc(adns_state ads, const typeinfo *typei,
+static adns_query query_alloc(adns_state ads,
+ const typeinfo *typei, adns_rrtype type,
adns_queryflags flags, struct timeval now) {
/* Allocate a virgin query and return it. */
adns_query qu;
qu->answer->status= adns_s_ok;
qu->answer->cname= qu->answer->owner= 0;
- qu->answer->type= typei->type;
+ qu->answer->type= type;
qu->answer->expires= -1;
qu->answer->nrrs= 0;
qu->answer->rrs.untyped= 0;
- qu->answer->rrsz= typei->rrsz;
+ qu->answer->rrsz= typei->getrrsz(typei,type);
return qu;
}
adns__query_send(qu,now);
}
+adns_status adns__ckl_hostname(adns_state ads, adns_queryflags flags,
+ union checklabel_state *cls,
+ qcontext *ctx, int labnum,
+ const char *label, int lablen)
+{
+ int i, c;
+
+ if (flags & adns_qf_quoteok_query) return adns_s_ok;
+ for (i=0; i<lablen; i++) {
+ c= label[i];
+ if (c == '-') {
+ if (!i) return adns_s_querydomaininvalid;
+ } else if (!ctype_alpha(c) && !ctype_digit(c)) {
+ return adns_s_querydomaininvalid;
+ }
+ }
+ return adns_s_ok;
+}
+
+static adns_status check_domain_name(adns_state ads, adns_queryflags flags,
+ qcontext *ctx, const typeinfo *typei,
+ const byte *dgram, int dglen)
+{
+ findlabel_state fls;
+ adns_status err;
+ int labnum= 0, labstart, lablen;
+ union checklabel_state cls;
+
+ adns__findlabel_start(&fls,ads, -1,0, dgram,dglen,dglen, DNS_HDRSIZE,0);
+ do {
+ err= adns__findlabel_next(&fls, &lablen,&labstart);
+ assert(!err); assert(lablen >= 0);
+ err= typei->checklabel(ads,flags, &cls,ctx,
+ labnum++, dgram+labstart,lablen);
+ if (err) return err;
+ } while (lablen);
+ return adns_s_ok;
+}
+
adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
- const typeinfo *typei, vbuf *qumsg_vb,
- int id,
+ const typeinfo *typei, adns_rrtype type,
+ vbuf *qumsg_vb, int id,
adns_queryflags flags, struct timeval now,
- const qcontext *ctx) {
+ qcontext *ctx) {
adns_query qu;
+ adns_status err;
- qu= query_alloc(ads,typei,flags,now);
- if (!qu) { adns__vbuf_free(qumsg_vb); return adns_s_nomemory; }
+ err= check_domain_name(ads, flags,ctx,typei, qumsg_vb->buf,qumsg_vb->used);
+ if (err) goto x_err;
+ qu= query_alloc(ads,typei,type,flags,now);
+ if (!qu) { err = adns_s_nomemory; goto x_err; }
*query_r= qu;
memcpy(&qu->ctx,ctx,sizeof(qu->ctx));
query_submit(ads,qu, typei,qumsg_vb,id,flags,now);
return adns_s_ok;
+
+x_err:
+ adns__vbuf_free(qumsg_vb);
+ return err;
}
static void query_simple(adns_state ads, adns_query qu,
int id;
adns_status stat;
- stat= adns__mkquery(ads,&qu->vb,&id, owner,ol, typei,flags);
+ stat= adns__mkquery(ads,&qu->vb,&id, owner,ol,
+ typei,qu->answer->type, flags);
if (stat) {
if (stat == adns_s_querydomaintoolong && (flags & adns_qf_search)) {
adns__search_next(ads,qu,now);
}
}
+ stat= check_domain_name(ads, flags,&qu->ctx,typei, qu->vb.buf,qu->vb.used);
+ if (stat) { adns__query_fail(qu,stat); return; }
+
vb_new= qu->vb;
adns__vbuf_init(&qu->vb);
query_submit(ads,qu, typei,&vb_new,id, flags,now);
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= query_alloc(ads,typei,type,flags,now); if (!qu) goto x_errno;
qu->ctx.ext= context;
qu->ctx.callback= 0;
- memset(&qu->ctx.info,0,sizeof(qu->ctx.info));
+ memset(&qu->ctx.pinfo,0,sizeof(qu->ctx.pinfo));
+ memset(&qu->ctx.tinfo,0,sizeof(qu->ctx.tinfo));
*query_r= qu;
adns_queryflags flags,
void *context,
adns_query *query_r) {
- const unsigned char *iaddr;
- char *buf, *buf_free;
+ char *buf, *buf_free = 0;
char shortbuf[100];
- int r, lreq;
+ int r;
flags &= ~adns_qf_search;
- if (addr->sa_family != AF_INET) return ENOSYS;
- iaddr= (const unsigned char*)
- &(((const struct sockaddr_in*)addr) -> sin_addr);
-
- lreq= strlen(zone) + 4*4 + 1;
- if (lreq > sizeof(shortbuf)) {
- buf= malloc(strlen(zone) + 4*4 + 1);
- if (!buf) return errno;
- buf_free= buf;
- } else {
- buf= shortbuf;
- buf_free= 0;
- }
- sprintf(buf, "%d.%d.%d.%d.%s", iaddr[3], iaddr[2], iaddr[1], iaddr[0], zone);
-
+ buf = shortbuf;
+ r= adns__make_reverse_domain(addr,zone, &buf,sizeof(shortbuf),&buf_free);
+ if (r) return r;
r= adns_submit(ads,buf,type,flags,context,query_r);
free(buf_free);
return r;
adns_queryflags flags,
void *context,
adns_query *query_r) {
- if (type != adns_r_ptr && type != adns_r_ptr_raw) return EINVAL;
- return adns_submit_reverse_any(ads,addr,"in-addr.arpa",
- type,flags,context,query_r);
+ if (((type^adns_r_ptr) & adns_rrt_reprmask) &&
+ ((type^adns_r_ptr_raw) & adns_rrt_reprmask))
+ return EINVAL;
+ return adns_submit_reverse_any(ads,addr,0,type,flags,context,query_r);
}
int adns_synchronous(adns_state ads,
an= malloc(MEM_ROUND(MEM_ROUND(sizeof(*an)) + sz));
if (!an) return 0;
LIST_LINK_TAIL(qu->allocations,an);
+ an->sz= sz;
return (byte*)an + MEM_ROUND(sizeof(*an));
}
return rv;
}
+static allocnode *alloc_info(adns_query qu, void *p, size_t *sz_r) {
+ allocnode *an;
+
+ if (!p || p == qu) { *sz_r= 0; return 0; }
+ an= (allocnode *)((byte *)p - MEM_ROUND(sizeof(allocnode)));
+ *sz_r= MEM_ROUND(an->sz);
+ return an;
+}
+
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;
+void adns__transfer_interim(adns_query from, adns_query to, void *block) {
+ size_t sz;
+ allocnode *an= alloc_info(from, block, &sz);
- if (!block) return;
- an= (void*)((byte*)block - MEM_ROUND(sizeof(*an)));
+ if (!an) return;
assert(!to->final_allocspace);
assert(!from->final_allocspace);
LIST_UNLINK(from->allocations,an);
LIST_LINK_TAIL(to->allocations,an);
- sz= MEM_ROUND(sz);
from->interim_allocd -= sz;
to->interim_allocd += sz;
}
if (ans->nrrs && qu->typei->diff_needswap) {
- if (!adns__vbuf_ensure(&qu->vb,qu->typei->rrsz)) {
+ if (!adns__vbuf_ensure(&qu->vb,qu->answer->rrsz)) {
adns__query_fail(qu,adns_s_nomemory);
return;
}
qu->typei->diff_needswap,
qu->ads);
}
+ if (ans->nrrs && qu->typei->postsort) {
+ qu->typei->postsort(qu->ads, ans->rrs.bytes,
+ ans->nrrs,ans->rrsz, qu->typei);
+ }
ans->expires= qu->expires;
parent= qu->parent;
~ianmdlvl / adns.git / blobdiff