dname_39.c 4.37 KB
Newer Older
Mark Andrews's avatar
Mark Andrews committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
/*
 * Copyright (C) 1999 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.
 */

18
 /* $Id: dname_39.c,v 1.8 1999/08/02 22:17:59 halley Exp $ */
Mark Andrews's avatar
Mark Andrews committed
19
20
21

 /* draft-ietf-dnsind-dname-02.txt */

22
23
#ifndef RDATA_GENERIC_DNAME_39_C
#define RDATA_GENERIC_DNAME_39_C
Mark Andrews's avatar
Mark Andrews committed
24
25

static dns_result_t
26
fromtext_dname(dns_rdataclass_t rdclass, dns_rdatatype_t type,
Mark Andrews's avatar
Mark Andrews committed
27
28
29
30
31
32
33
34
	       isc_lex_t *lexer, dns_name_t *origin,
	       isc_boolean_t downcase, isc_buffer_t *target)
{
	isc_token_t token;
	dns_name_t name;
	isc_buffer_t buffer;

	REQUIRE(type == 39);
35
	rdclass = rdclass;	/*unused*/
Mark Andrews's avatar
Mark Andrews committed
36
37
38
39
40
41
42
43
44
45
46
	
	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
	
	dns_name_init(&name, NULL);
	buffer_fromregion(&buffer, &token.value.as_region,
			  ISC_BUFFERTYPE_TEXT);
	origin = (origin != NULL) ? origin : dns_rootname;
	return (dns_name_fromtext(&name, &buffer, origin, downcase, target));
}

static dns_result_t
47
48
49
totext_dname(dns_rdata_t *rdata, dns_rdata_textctx_t *tctx, 
	     isc_buffer_t *target) 
{
Mark Andrews's avatar
Mark Andrews committed
50
51
52
53
54
55
56
57
58
59
60
61
62
	isc_region_t region;
	dns_name_t name;
	dns_name_t prefix;
	isc_boolean_t sub;

	REQUIRE(rdata->type == 39);

	dns_name_init(&name, NULL);
	dns_name_init(&prefix, NULL);

	dns_rdata_toregion(rdata, &region);
	dns_name_fromregion(&name, &region);

63
	sub = name_prefix(&name, tctx->origin, &prefix);
Mark Andrews's avatar
Mark Andrews committed
64
65
66
67
68

	return (dns_name_totext(&prefix, sub, target));
}

static dns_result_t
69
fromwire_dname(dns_rdataclass_t rdclass, dns_rdatatype_t type,
Mark Andrews's avatar
Mark Andrews committed
70
71
72
73
74
75
	       isc_buffer_t *source, dns_decompress_t *dctx,
	       isc_boolean_t downcase, isc_buffer_t *target)
{
	dns_name_t name;

	REQUIRE(type == 39);
76
	rdclass = rdclass;	/*unused*/
Mark Andrews's avatar
Mark Andrews committed
77

Mark Andrews's avatar
Mark Andrews committed
78
79
80
81
82
	if (dns_decompress_edns(dctx) >= 1 || !dns_decompress_strict(dctx))
		dns_decompress_setmethods(dctx, DNS_COMPRESS_ALL);
	else
		dns_decompress_setmethods(dctx, DNS_COMPRESS_LOCAL);

Mark Andrews's avatar
Mark Andrews committed
83
84
85
86
87
88
89
90
91
92
93
	dns_name_init(&name, NULL);
	return(dns_name_fromwire(&name, source, dctx, downcase, target));
}

static dns_result_t
towire_dname(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
	dns_name_t name;
	isc_region_t region;

	REQUIRE(rdata->type == 39);

Mark Andrews's avatar
Mark Andrews committed
94
95
96
	if (dns_compress_getedns(cctx) >= 1)
		dns_compress_setmethods(cctx, DNS_COMPRESS_ALL);
	else
Mark Andrews's avatar
Mark Andrews committed
97
		dns_compress_setmethods(cctx, DNS_COMPRESS_LOCAL);
Mark Andrews's avatar
Mark Andrews committed
98

Mark Andrews's avatar
Mark Andrews committed
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
	dns_name_init(&name, NULL);
	dns_rdata_toregion(rdata, &region);
	dns_name_fromregion(&name, &region);

	return (dns_name_towire(&name, cctx, target));
}

static int
compare_dname(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
	dns_name_t name1;
	dns_name_t name2;
	isc_region_t region1;
	isc_region_t region2;

	REQUIRE(rdata1->type == rdata2->type);
114
	REQUIRE(rdata1->rdclass == rdata2->rdclass);
Mark Andrews's avatar
Mark Andrews committed
115
116
117
118
119
120
121
122
123
124
125
	REQUIRE(rdata1->type == 39);

	dns_name_init(&name1, NULL);
	dns_name_init(&name2, NULL);

	dns_rdata_toregion(rdata1, &region1);
	dns_rdata_toregion(rdata2, &region2);

	dns_name_fromregion(&name1, &region1);
	dns_name_fromregion(&name2, &region2);

126
	return (dns_name_rdatacompare(&name1, &name2));
Mark Andrews's avatar
Mark Andrews committed
127
128
129
}

static dns_result_t
130
fromstruct_dname(dns_rdataclass_t rdclass, dns_rdatatype_t type, void *source,
Mark Andrews's avatar
Mark Andrews committed
131
132
133
134
135
		 isc_buffer_t *target)
{

	REQUIRE(type == 39);

136
	rdclass = rdclass;	/*unused*/
Mark Andrews's avatar
Mark Andrews committed
137
138
139
140
141
142
143
144

	source = source;
	target = target;

	return (DNS_R_NOTIMPLEMENTED);
}

static dns_result_t
145
tostruct_dname(dns_rdata_t *rdata, void *target, isc_mem_t *mctx) {
Mark Andrews's avatar
Mark Andrews committed
146
147
	
	REQUIRE(rdata->type == 39);
148
	REQUIRE(target != NULL && target == NULL);
Mark Andrews's avatar
Mark Andrews committed
149
150

	target = target;
151
	mctx = mctx;
Mark Andrews's avatar
Mark Andrews committed
152
153
154

	return (DNS_R_NOTIMPLEMENTED);
}
155
156
157
158
159
160

static void
freestruct_dname(void *source) {
	REQUIRE(source != NULL && source != NULL);
	REQUIRE(ISC_FALSE);	/* XXX */
}
161
162
163
164
165
166
167
168
169
170
171
172
173

static dns_result_t
additionaldata_dname(dns_rdata_t *rdata, dns_additionaldatafunc_t add,
		     void *arg)
{
	REQUIRE(rdata->type == 39);

	(void)add;
	(void)arg;

	return (DNS_R_SUCCESS);
}

174
#endif	/* RDATA_GENERIC_DNAME_39_C */