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bind/lib/dns/rdata/generic/sig_24.c
David Lawrence 6d12fdf966 Megacommit of many files. 
Mostly, several functions that take pointers as arguments, almost
always char * pointers, had those pointers qualified with "const".
Those that returned pointers to previously const-qualified arguments
had their return values qualified as const.  Some structure members
were qualified as const to retain that attribute from the variables
from which they were assigned.

The macro DE_CONST is used to deal with a handful of very special
places where something is qualified as const but really needs to have
its const qualifier removed.

rdata.c now defines macros for the prototypes of the basic rdata functions,
and all of the lib/dns/rdata/**/*.c files now use them.

Some minor integer-compatibility issues.  (IE, ~0x03 is a signed int,
so assigning it to an unsigned int should use a cast.  The type of an
enum member is int, so there are some conversion issues there, too.)

A pointers-to-function should not be cast to a pointer-to-object.

Variables should not be named for C reserved identifiers.

One or two set-but-not-used variables removed.

Minor other ISC style cleanups.
2000-06-01 18:26:56 +00:00

538 lines
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/*
* Copyright (C) 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* $Id: sig_24.c,v 1.43 2000/06/01 18:26:32 tale Exp $ */
/* Reviewed: Fri Mar 17 09:05:02 PST 2000 by gson */
/* RFC 2535 */
#ifndef RDATA_GENERIC_SIG_24_C
#define RDATA_GENERIC_SIG_24_C
#define RRTYPE_SIG_ATTRIBUTES (DNS_RDATATYPEATTR_DNSSEC)
static inline isc_result_t
fromtext_sig(ARGS_FROMTEXT) {
isc_token_t token;
unsigned char c;
long i;
dns_rdatatype_t covered;
char *e;
isc_result_t result;
dns_name_t name;
isc_buffer_t buffer;
isc_uint32_t time_signed, time_expire;
REQUIRE(type == 24);
UNUSED(rdclass);
/*
* Type covered.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
result = dns_rdatatype_fromtext(&covered, &token.value.as_textregion);
if (result != ISC_R_SUCCESS && result != ISC_R_NOTIMPLEMENTED) {
i = strtol(token.value.as_pointer, &e, 10);
if (i < 0 || i > 65535)
return (ISC_R_RANGE);
if (*e != 0)
return (result);
covered = (dns_rdatatype_t)i;
}
RETERR(uint16_tobuffer(covered, target));
/*
* Algorithm.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_secalg_fromtext(&c, &token.value.as_textregion));
RETERR(mem_tobuffer(target, &c, 1));
/*
* Labels.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xff)
return (ISC_R_RANGE);
c = (unsigned char)token.value.as_ulong;
RETERR(mem_tobuffer(target, &c, 1));
/*
* Original ttl.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
RETERR(uint32_tobuffer(token.value.as_ulong, target));
/*
* Signature expiration.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_time32_fromtext(token.value.as_pointer, &time_expire));
RETERR(uint32_tobuffer(time_expire, target));
/*
* Time signed.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_time32_fromtext(token.value.as_pointer, &time_signed));
RETERR(uint32_tobuffer(time_signed, target));
/*
* Key footprint.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/*
* Signer.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
dns_name_init(&name, NULL);
buffer_fromregion(&buffer, &token.value.as_region);
origin = (origin != NULL) ? origin : dns_rootname;
RETERR(dns_name_fromtext(&name, &buffer, origin, downcase, target));
/*
* Sig.
*/
return (isc_base64_tobuffer(lexer, target, -1));
}
static inline isc_result_t
totext_sig(ARGS_TOTEXT) {
isc_region_t sr;
char buf[sizeof "4294967295"];
dns_rdatatype_t covered;
unsigned long ttl;
unsigned long when;
unsigned long exp;
unsigned long foot;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == 24);
dns_rdata_toregion(rdata, &sr);
/*
* Type covered.
*/
covered = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* XXXAG We should have something like dns_rdatatype_isknown()
* that does the right thing with type 0.
*/
if (dns_rdatatype_isknown(covered) && covered != 0) {
RETERR(dns_rdatatype_totext(covered, target));
} else {
char buf[sizeof "65535"];
sprintf(buf, "%u", covered);
RETERR(str_totext(buf, target));
}
RETERR(str_totext(" ", target));
/*
* Algorithm.
*/
sprintf(buf, "%u", sr.base[0]);
isc_region_consume(&sr, 1);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Labels.
*/
sprintf(buf, "%u", sr.base[0]);
isc_region_consume(&sr, 1);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Ttl.
*/
ttl = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
sprintf(buf, "%lu", ttl);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Sig exp.
*/
exp = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
RETERR(dns_time32_totext(exp, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
/*
* Time signed.
*/
when = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
RETERR(dns_time32_totext(when, target));
RETERR(str_totext(" ", target));
/*
* Footprint.
*/
foot = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%lu", foot);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Signer.
*/
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_name_fromregion(&name, &sr);
isc_region_consume(&sr, name_length(&name));
sub = name_prefix(&name, tctx->origin, &prefix);
RETERR(dns_name_totext(&prefix, sub, target));
/*
* Sig.
*/
RETERR(str_totext(tctx->linebreak, target));
RETERR(isc_base64_totext(&sr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" )", target));
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_sig(ARGS_FROMWIRE) {
isc_region_t sr;
dns_name_t name;
REQUIRE(type == 24);
dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
UNUSED(rdclass);
isc_buffer_activeregion(source, &sr);
/*
* type covered: 2
* algorithm: 1
* labels: 1
* original ttl: 4
* signature expiration: 4
* time signed: 4
* key footprint: 2
*/
if (sr.length < 18)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, 18);
RETERR(mem_tobuffer(target, sr.base, 18));
/*
* Signer.
*/
dns_name_init(&name, NULL);
RETERR(dns_name_fromwire(&name, source, dctx, downcase, target));
/*
* Sig.
*/
isc_buffer_activeregion(source, &sr);
isc_buffer_forward(source, sr.length);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_sig(ARGS_TOWIRE) {
isc_region_t sr;
dns_name_t name;
REQUIRE(rdata->type == 24);
dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
dns_rdata_toregion(rdata, &sr);
/*
* type covered: 2
* algorithm: 1
* labels: 1
* original ttl: 4
* signature expiration: 4
* time signed: 4
* key footprint: 2
*/
RETERR(mem_tobuffer(target, sr.base, 18));
isc_region_consume(&sr, 18);
/*
* Signer.
*/
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &sr);
isc_region_consume(&sr, name_length(&name));
RETERR(dns_name_towire(&name, cctx, target));
/*
* Signature.
*/
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline int
compare_sig(ARGS_COMPARE) {
isc_region_t r1;
isc_region_t r2;
dns_name_t name1;
dns_name_t name2;
int order;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == 24);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
INSIST(r1.length > 18);
INSIST(r2.length > 18);
r1.length = 18;
r2.length = 18;
order = compare_region(&r1, &r2);
if (order != 0)
return (order);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
isc_region_consume(&r1, 18);
isc_region_consume(&r2, 18);
dns_name_fromregion(&name1, &r1);
dns_name_fromregion(&name2, &r2);
order = dns_name_rdatacompare(&name1, &name2);
if (order != 0)
return (order);
isc_region_consume(&r1, name_length(&name1));
isc_region_consume(&r2, name_length(&name2));
return (compare_region(&r1, &r2));
}
static inline isc_result_t
fromstruct_sig(ARGS_FROMSTRUCT) {
dns_rdata_sig_t *sig = source;
REQUIRE(type == 24);
REQUIRE(source != NULL);
REQUIRE(sig->common.rdtype == type);
REQUIRE(sig->common.rdclass == rdclass);
REQUIRE((sig->signature != NULL && sig->siglen != 0) ||
(sig->signature == NULL && sig->siglen == 0));
/*
* Type covered.
*/
RETERR(uint16_tobuffer(sig->covered, target));
/*
* Algorithm.
*/
RETERR(uint8_tobuffer(sig->algorithm, target));
/*
* Labels.
*/
RETERR(uint8_tobuffer(sig->labels, target));
/*
* Original TTL.
*/
RETERR(uint32_tobuffer(sig->originalttl, target));
/*
* Expire time.
*/
RETERR(uint32_tobuffer(sig->timeexpire, target));
/*
* Time signed.
*/
RETERR(uint32_tobuffer(sig->timesigned, target));
/*
* Key ID.
*/
RETERR(uint16_tobuffer(sig->keyid, target));
/*
* Signer name.
*/
RETERR(name_tobuffer(&sig->signer, target));
/*
* Signature.
*/
return (mem_tobuffer(target, sig->signature, sig->siglen));
}
static inline isc_result_t
tostruct_sig(ARGS_TOSTRUCT) {
isc_region_t sr;
dns_rdata_sig_t *sig = target;
dns_name_t signer;
REQUIRE(rdata->type == 24);
REQUIRE(target != NULL);
sig->common.rdclass = rdata->rdclass;
sig->common.rdtype = rdata->type;
ISC_LINK_INIT(&sig->common, link);
dns_rdata_toregion(rdata, &sr);
/*
* Type covered.
*/
sig->covered = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* Algorithm.
*/
sig->algorithm = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
/*
* Labels.
*/
sig->labels = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
/*
* Original TTL.
*/
sig->originalttl = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
/*
* Expire time.
*/
sig->timeexpire = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
/*
* Time signed.
*/
sig->timesigned = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
/*
* Key ID.
*/
sig->keyid = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
dns_name_init(&signer, NULL);
dns_name_fromregion(&signer, &sr);
dns_name_init(&sig->signer, NULL);
RETERR(name_duporclone(&signer, mctx, &sig->signer));
isc_region_consume(&sr, name_length(&sig->signer));
/*
* Signature.
*/
sig->siglen = sr.length;
if (sig->siglen > 0) {
sig->signature = mem_maybedup(mctx, sr.base, sig->siglen);
if (sig->signature == NULL)
goto cleanup;
} else
sig->signature = NULL;
sig->mctx = mctx;
return (ISC_R_SUCCESS);
cleanup:
if (mctx != NULL)
dns_name_free(&sig->signer, mctx);
return (ISC_R_NOMEMORY);
}
static inline void
freestruct_sig(ARGS_FREESTRUCT) {
dns_rdata_sig_t *sig = (dns_rdata_sig_t *) source;
REQUIRE(source != NULL);
REQUIRE(sig->common.rdtype == 24);
if (sig->mctx == NULL)
return;
dns_name_free(&sig->signer, sig->mctx);
if (sig->signature != NULL)
isc_mem_free(sig->mctx, sig->signature);
sig->mctx = NULL;
}
static inline isc_result_t
additionaldata_sig(ARGS_ADDLDATA) {
REQUIRE(rdata->type == 24);
UNUSED(rdata);
UNUSED(add);
UNUSED(arg);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
digest_sig(ARGS_DIGEST) {
REQUIRE(rdata->type == 24);
UNUSED(rdata);
UNUSED(digest);
UNUSED(arg);
return (ISC_R_NOTIMPLEMENTED);
}
static inline dns_rdatatype_t
covers_sig(dns_rdata_t *rdata) {
dns_rdatatype_t type;
isc_region_t r;
REQUIRE(rdata->type == 24);
dns_rdata_toregion(rdata, &r);
type = uint16_fromregion(&r);
return (type);
}
#endif /* RDATA_GENERIC_SIG_24_C */
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