* - RR-type-specific code, and the machinery to call it
*/
/*
- * This file is part of adns, which is Copyright (C) 1997, 1998 Ian Jackson
+ * This file is part of adns, which is Copyright (C) 1997-1999 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
#include "internal.h"
-#define R_NOMEM return adns_s_nolocalmem
+#define R_NOMEM return adns_s_nomemory
#define CSP_ADDSTR(s) if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; else;
/*
* order of sections:
*
+ * _string (pap)
* _textdata, _qstring (csp)
* _str (mf,cs)
- * _intstr (mf,cs)
+ * _intstr (mf,csp,cs)
* _manyistr (mf,cs)
* _txt (pa)
* _inaddr (pa,dip,di)
* _mx_raw (pa,di)
* _mx (pa,di)
* _inthostaddr (mf,cs)
+ * _ptr (pa)
+ * _strpair (mf,cs)
+ * _intstrpair (mf,cs)
+ * _hinfo (pa)
+ * _mailbox (pap)
+ * _rp (pa)
+ * _soa (pa,mf,cs)
* _flat (mf)
*
* within each section:
*/
/*
+ * _string (pap)
* _textdata, _qstring (csp)
*/
+static adns_status pap_string(const parseinfo *pai, int *cbyte_io, int max,
+ int *len_r, char **str_r) {
+ /* Neither len_r nor str_r may be null.
+ * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
+ */
+ const byte *dgram= pai->dgram;
+ int l, cbyte;
+ char *str;
+
+ cbyte= *cbyte_io;
+
+ if (cbyte >= max) return adns_s_invaliddata;
+ GET_B(cbyte,l);
+ if (cbyte+l > max) return adns_s_invaliddata;
+
+ str= adns__alloc_interim(pai->qu, l+1);
+ if (!str) R_NOMEM;
+
+ str[l]= 0;
+ memcpy(str,dgram+cbyte,l);
+
+ *len_r= l;
+ *str_r= str;
+ *cbyte_io= cbyte+l;
+
+ return adns_s_ok;
+}
+
static adns_status csp_textdata(vbuf *vb, const char *dp, int len) {
unsigned char ch;
char buf[10];
ch= *dp++;
if (ch >= 32 && ch <= 126 && ch != '"' && ch != '\\') {
if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM;
+ } else if (ch == '\\') {
+ CSP_ADDSTR("\\\\");
} else {
- sprintf(buf,"\\%02x",ch);
+ sprintf(buf,"\\x%02x",ch);
CSP_ADDSTR(buf);
}
}
}
/*
- * _intstr (mf,cs)
+ * _intstr (mf,csp,cs)
*/
static void mf_intstr(adns_query qu, void *datap) {
adns__makefinal_str(qu,&rrp->str);
}
-static adns_status cs_intstr(vbuf *vb, const void *datap) {
- const adns_rr_intstr *rrp= datap;
+static adns_status csp_intstr(vbuf *vb, const adns_rr_intstr *rrp) {
char buf[10];
sprintf(buf,"%u ",rrp->i);
return csp_qstring(vb,rrp->str);
}
+static adns_status cs_intstr(vbuf *vb, const void *datap) {
+ const adns_rr_intstr *rrp= datap;
+
+ return csp_intstr(vb,rrp);
+}
+
/*
* _manyistr (mf,cs)
*/
adns_rr_intstr **rrp= datap, *table, *te;
const byte *dgram= pai->dgram;
int ti, tc, l, startbyte;
+ adns_status st;
startbyte= cbyte;
if (cbyte >= max) return adns_s_invaliddata;
while (cbyte < max) {
GET_B(cbyte,l);
cbyte+= l;
+ tc++;
}
if (cbyte != max) return adns_s_invaliddata;
if (!table) R_NOMEM;
for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) {
- GET_B(cbyte,l);
- te->str= adns__alloc_interim(pai->qu, l+1);
- if (!te->str) R_NOMEM;
- te->str[l]= 0;
- memcpy(te->str,dgram+cbyte,l);
- te->i= l;
+ st= pap_string(pai, &cbyte, max, &te->i, &te->str);
+ if (st) return st;
}
assert(cbyte == max);
return adns_s_ok;
}
-static int dip_inaddr(struct in_addr a, struct in_addr b) {
- /* fixme implement sortlist */
- return 0;
+static int search_sortlist(adns_state ads, struct in_addr ad) {
+ const struct sortlist *slp;
+ int i;
+
+ for (i=0, slp=ads->sortlist;
+ i<ads->nsortlist && !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr);
+ i++, slp++);
+ return i;
+}
+
+static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) {
+ int ai, bi;
+
+ if (!ads->nsortlist) return 0;
+
+ ai= search_sortlist(ads,a);
+ bi= search_sortlist(ads,b);
+ return bi<ai;
}
-static int di_inaddr(const void *datap_a, const void *datap_b) {
+static int di_inaddr(adns_state ads, const void *datap_a, const void *datap_b) {
const struct in_addr *ap= datap_a, *bp= datap_b;
- return dip_inaddr(*ap,*bp);
+ return dip_inaddr(ads,*ap,*bp);
}
static adns_status cs_inaddr(vbuf *vb, const void *datap) {
*/
static adns_status pa_addr(const parseinfo *pai, int cbyte, int max, void *datap) {
- adns_addr *storeto= datap;
+ adns_rr_addr *storeto= datap;
const byte *dgram= pai->dgram;
if (max-cbyte != 4) return adns_s_invaliddata;
storeto->len= sizeof(storeto->addr.inet);
memset(&storeto->addr,0,sizeof(storeto->addr.inet));
storeto->addr.inet.sin_family= AF_INET;
- storeto->addr.inet.sin_port= 0;
memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4);
return adns_s_ok;
}
-static int di_addr(const void *datap_a, const void *datap_b) {
- const adns_addr *ap= datap_a, *bp= datap_b;
+static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_addr *ap= datap_a, *bp= datap_b;
assert(ap->addr.sa.sa_family == AF_INET);
- return dip_inaddr(ap->addr.inet.sin_addr,bp->addr.inet.sin_addr);
+ return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr);
}
-static adns_status csp_addr(vbuf *vb, const adns_addr *rrp) {
+static int div_addr(void *context, const void *datap_a, const void *datap_b) {
+ const adns_state ads= context;
+
+ return di_addr(ads, datap_a, datap_b);
+}
+
+static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
const char *ia;
static char buf[30];
}
static adns_status cs_addr(vbuf *vb, const void *datap) {
- const adns_addr *rrp= datap;
+ const adns_rr_addr *rrp= datap;
return csp_addr(vb,rrp);
}
}
/*
- * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
+ * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
*/
static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
int *cbyte_io, int count, int dmstart) {
int rri, naddrs;
int type, class, rdlen, rdstart, ownermatched;
+ unsigned long ttl;
adns_status st;
for (rri=0, naddrs=-1; rri<count; rri++) {
st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, pai->dglen, cbyte_io,
- &type, &class, &rdlen, &rdstart,
+ &type, &class, &ttl, &rdlen, &rdstart,
pai->dgram, pai->dglen, dmstart, &ownermatched);
if (st) return st;
if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) {
if (naddrs == -1) {
naddrs= 0;
}
- if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_addr))) R_NOMEM;
- st= pa_addr(pai, rdstart,rdstart+rdlen, pai->qu->vb.buf + naddrs*sizeof(adns_addr));
+ if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr))) R_NOMEM;
+ adns__update_expires(pai->qu,ttl,pai->now);
+ st= pa_addr(pai, rdstart,rdstart+rdlen,
+ pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr));
if (st) return st;
naddrs++;
}
if (naddrs >= 0) {
- ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_addr));
+ ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr));
if (!ha->addrs) R_NOMEM;
- memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_addr));
+ memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr));
ha->naddrs= naddrs;
ha->astatus= adns_s_ok;
- adns__isort(ha->addrs, naddrs, sizeof(adns_addr), pai->qu->vb.buf, di_addr);
+ adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
+ div_addr, pai->ads);
}
return adns_s_ok;
}
+static void icb_hostaddr(adns_query parent, adns_query child) {
+ adns_answer *cans= child->answer;
+ adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
+
+ rrp->astatus= cans->status;
+ rrp->naddrs= cans->nrrs;
+ rrp->addrs= cans->rrs.addr;
+ adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*sizeof(adns_rr_addr));
+
+ if (!parent->children.head) adns__query_done(parent);
+}
+
static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
int max, adns_rr_hostaddr *rrp) {
adns_status st;
int dmstart, cbyte;
+ qcontext ctx;
+ int id;
+ adns_query nqu;
+ adns_queryflags nflags;
dmstart= cbyte= *cbyte_io;
st= pap_domain(pai, &cbyte, max, &rrp->host,
if (st) return st;
if (rrp->naddrs != -1) return adns_s_ok;
- rrp->naddrs= 0; /* fixme additional section didn't have required data */
- rrp->astatus= adns_s_notimplemented;
+ st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
+ pai->dgram, pai->dglen, dmstart,
+ adns_r_addr, adns_qf_quoteok_query);
+ if (st) return st;
+
+ ctx.ext= 0;
+ ctx.callback= icb_hostaddr;
+ ctx.info.hostaddr= rrp;
+
+ nflags= adns_qf_quoteok_query;
+ if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
+
+ st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
+ &pai->qu->vb, id, nflags, pai->now, 0, &ctx);
+ if (st) return st;
+
+ nqu->parent= pai->qu;
+ LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
return adns_s_ok;
}
return adns_s_ok;
}
-static int dip_hostaddr(const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
+static int dip_hostaddr(adns_state ads, const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
if (ap->astatus != bp->astatus) return ap->astatus;
if (ap->astatus) return 0;
assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
- return dip_inaddr(ap->addrs[0].addr.inet.sin_addr, bp->addrs[0].addr.inet.sin_addr);
+ return dip_inaddr(ads,
+ ap->addrs[0].addr.inet.sin_addr,
+ bp->addrs[0].addr.inet.sin_addr);
}
-static int di_hostaddr(const void *datap_a, const void *datap_b) {
+static int di_hostaddr(adns_state ads, const void *datap_a, const void *datap_b) {
const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
- return dip_hostaddr(ap,bp);
+ return dip_hostaddr(ads, ap,bp);
}
static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
return adns_s_ok;
}
-static int di_mx_raw(const void *datap_a, const void *datap_b) {
+static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
const adns_rr_intstr *ap= datap_a, *bp= datap_b;
if (ap->i < bp->i) return 0;
return adns_s_ok;
}
-static int di_mx(const void *datap_a, const void *datap_b) {
+static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
if (ap->i < bp->i) return 0;
if (ap->i > bp->i) return 1;
- return dip_hostaddr(&ap->ha,&bp->ha);
+ return dip_hostaddr(ads, &ap->ha, &bp->ha);
}
/*
return csp_hostaddr(vb,&rrp->ha);
}
+/*
+ * _ptr (pa, +icb_ptr)
+ */
+
+static void icb_ptr(adns_query parent, adns_query child) {
+ adns_answer *cans= child->answer;
+ const adns_rr_addr *queried, *found;
+ int i;
+
+ if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
+ adns__query_fail(parent,adns_s_inconsistent);
+ return;
+ } else if (cans->status) {
+ adns__query_fail(parent,cans->status);
+ return;
+ }
+
+ queried= &parent->ctx.info.ptr_parent_addr;
+ for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
+ if (queried->len == found->len &&
+ !memcmp(&queried->addr,&found->addr,queried->len)) {
+ if (!parent->children.head) adns__query_done(parent);
+ return;
+ }
+ }
+
+ adns__query_fail(parent,adns_s_inconsistent);
+}
+
+static adns_status pa_ptr(const parseinfo *pai, int dmstart, int max, void *datap) {
+ static const char *(expectdomain[])= { DNS_INADDR_ARPA };
+
+ char **rrp= datap;
+ adns_status st;
+ adns_rr_addr *ap;
+ findlabel_state fls;
+ char *ep;
+ byte ipv[4];
+ char labbuf[4];
+ int cbyte, i, lablen, labstart, l, id;
+ adns_query nqu;
+ qcontext ctx;
+
+ cbyte= dmstart;
+ st= pap_domain(pai, &cbyte, max, rrp,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+ if (cbyte != max) return adns_s_invaliddata;
+
+ ap= &pai->qu->ctx.info.ptr_parent_addr;
+ if (!ap->len) {
+ adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
+ pai->qu->query_dgram, pai->qu->query_dglen,
+ pai->qu->query_dglen, DNS_HDRSIZE, 0);
+ for (i=0; i<4; i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
+ memcpy(labbuf, pai->qu->query_dgram + labstart, lablen); labbuf[lablen]= 0;
+ ipv[3-i]= strtoul(labbuf,&ep,10); if (*ep) return adns_s_querydomainwrong;
+ if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
+ return adns_s_querydomainwrong;
+ }
+ for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ l= strlen(expectdomain[i]);
+ if (lablen != l || memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
+ return adns_s_querydomainwrong;
+ }
+ st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
+ if (lablen) return adns_s_querydomainwrong;
+
+ ap->len= sizeof(struct sockaddr_in);
+ memset(&ap->addr,0,sizeof(ap->addr.inet));
+ ap->addr.inet.sin_family= AF_INET;
+ ap->addr.inet.sin_addr.s_addr=
+ htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
+ }
+
+ st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
+ pai->dgram, pai->dglen, dmstart,
+ adns_r_addr, adns_qf_quoteok_query);
+ if (st) return st;
+
+ ctx.ext= 0;
+ ctx.callback= icb_ptr;
+ memset(&ctx.info,0,sizeof(ctx.info));
+ st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
+ &pai->qu->vb, id,
+ adns_qf_quoteok_query, pai->now, 0, &ctx);
+ if (st) return st;
+
+ nqu->parent= pai->qu;
+ LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
+
+ return adns_s_ok;
+}
+
+/*
+ * _strpair (mf,cs)
+ */
+
+static void mf_strpair(adns_query qu, void *datap) {
+ adns_rr_strpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0]);
+ adns__makefinal_str(qu,&rrp->array[1]);
+}
+
+static adns_status cs_strpair(vbuf *vb, const void *datap) {
+ const adns_rr_strpair *rrp= datap;
+ adns_status st;
+
+ st= csp_qstring(vb,rrp->array[0]); if (st) return st;
+ CSP_ADDSTR(" ");
+ st= csp_qstring(vb,rrp->array[1]); if (st) return st;
+
+ return adns_s_ok;
+}
+
+/*
+ * _intstrpair (mf,cs)
+ */
+
+static void mf_intstrpair(adns_query qu, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0].str);
+ adns__makefinal_str(qu,&rrp->array[1].str);
+}
+
+static adns_status cs_intstrpair(vbuf *vb, const void *datap) {
+ const adns_rr_intstrpair *rrp= datap;
+ adns_status st;
+
+ st= csp_intstr(vb,&rrp->array[0]); if (st) return st;
+ CSP_ADDSTR(" ");
+ st= csp_intstr(vb,&rrp->array[1]); if (st) return st;
+
+ return adns_s_ok;
+}
+
+/*
+ * _hinfo (pa)
+ */
+
+static adns_status pa_hinfo(const parseinfo *pai, int cbyte, int max, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+ adns_status st;
+ int i;
+
+ for (i=0; i<2; i++) {
+ st= pap_string(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
+ if (st) return st;
+ }
+
+ if (cbyte != max) return adns_s_invaliddata;
+
+ return adns_s_ok;
+}
+
+/*
+ * _mailbox (pap)
+ */
+
+static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
+ char **mb_r) {
+ return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
+ /* fixme: mailbox quoting */
+}
+
+/*
+ * _rp (pa)
+ */
+
+static adns_status pa_rp(const parseinfo *pai, int cbyte, int max, void *datap) {
+ adns_rr_strpair *rrp= datap;
+ adns_status st;
+
+ st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
+ if (st) return st;
+
+ st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+/*
+ * _soa (pa,mf,cs)
+ */
+
+static adns_status pa_soa(const parseinfo *pai, int cbyte, int max, void *datap) {
+ adns_rr_soa *rrp= datap;
+ const byte *dgram= pai->dgram;
+ adns_status st;
+ int msw, lsw, i;
+
+ st= pap_domain(pai, &cbyte, max, &rrp->mname,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
+ if (st) return st;
+
+ if (cbyte+20 != max) return adns_s_invaliddata;
+
+ for (i=0; i<5; i++) {
+ GET_W(cbyte,msw);
+ GET_W(cbyte,lsw);
+ (&rrp->serial)[i]= (msw<<16) | lsw;
+ }
+
+ return adns_s_ok;
+}
+
+static void mf_soa(adns_query qu, void *datap) {
+ adns_rr_soa *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->mname);
+ adns__makefinal_str(qu,&rrp->rname);
+}
+
+static adns_status cs_soa(vbuf *vb, const void *datap) {
+ const adns_rr_soa *rrp= datap;
+ char buf[20];
+ int i;
+ adns_status st;
+
+ st= csp_qstring(vb,rrp->mname); if (st) return st;
+ CSP_ADDSTR(" ");
+ st= csp_qstring(vb,rrp->rname); if (st) return st;
+
+ for (i=0; i<5; i++) {
+ sprintf(buf," %lu",(&rrp->serial)[i]);
+ CSP_ADDSTR(buf);
+ }
+
+ return adns_s_ok;
+}
+
/*
* _flat (mf)
*/
FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr ),
DEEP_TYPE(ns_raw, "NS", "raw", str, pa_host_raw, 0 ),
DEEP_TYPE(cname, "CNAME", 0, str, pa_host_raw, 0 ),
-#if 0
DEEP_TYPE(soa_raw, "SOA", "raw", soa, pa_soa, 0 ),
-#endif
DEEP_TYPE(ptr_raw, "PTR", "raw", str, pa_host_raw, 0 ),
-#if 0
- DEEP_TYPE(hinfo, "HINFO", 0, strpair, pa_hinfo, 0 ),
-#endif
+ DEEP_TYPE(hinfo, "HINFO", 0, intstrpair, pa_hinfo, 0 ),
DEEP_TYPE(mx_raw, "MX", "raw", intstr, pa_mx_raw, di_mx_raw ),
DEEP_TYPE(txt, "TXT", 0, manyistr, pa_txt, 0 ),
-#if 0
DEEP_TYPE(rp_raw, "RP", "raw", strpair, pa_rp, 0 ),
-#endif
FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr ),
DEEP_TYPE(ns, "NS", "+addr", hostaddr, pa_hostaddr, di_hostaddr ),
-#if 0
DEEP_TYPE(ptr, "PTR","checked", str, pa_ptr, 0 ),
-#endif
DEEP_TYPE(mx, "MX", "+addr", inthostaddr, pa_mx, di_mx ),
-#if 0
- DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0 ),
- DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0 ),
-#endif /* fixme - implement all types */
+ DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0 ),
+ DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0 ),
};
const typeinfo *adns__findtype(adns_rrtype type) {
~ianmdlvl / adns.git / blobdiff