1 #ifndef HEADER_CURL_DOH_H
2 #define HEADER_CURL_DOH_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 2018 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
26 #include "curl_addrinfo.h"
28 #ifndef CURL_DISABLE_DOH
31 * Curl_doh() resolve a name using DoH (DNS-over-HTTPS). It resolves a name
32 * and returns a 'Curl_addrinfo *' with the address information.
35 struct Curl_addrinfo *Curl_doh(struct Curl_easy *data,
40 CURLcode Curl_doh_is_resolved(struct Curl_easy *data,
41 struct Curl_dns_entry **dns);
43 int Curl_doh_getsock(struct connectdata *conn, curl_socket_t *socks);
47 DOH_DNS_BAD_LABEL, /* 1 */
48 DOH_DNS_OUT_OF_RANGE, /* 2 */
49 DOH_DNS_LABEL_LOOP, /* 3 */
50 DOH_TOO_SMALL_BUFFER, /* 4 */
51 DOH_OUT_OF_MEM, /* 5 */
52 DOH_DNS_RDATA_LEN, /* 6 */
53 DOH_DNS_MALFORMAT, /* 7 */
54 DOH_DNS_BAD_RCODE, /* 8 - no such name */
55 DOH_DNS_UNEXPECTED_TYPE, /* 9 */
56 DOH_DNS_UNEXPECTED_CLASS, /* 10 */
57 DOH_NO_CONTENT, /* 11 */
58 DOH_DNS_BAD_ID, /* 12 */
59 DOH_DNS_NAME_TOO_LONG /* 13 */
67 DNS_TYPE_DNAME = 39 /* RFC6672 */
70 #define DOH_MAX_ADDR 24
71 #define DOH_MAX_CNAME 4
76 unsigned char v4[4]; /* network byte order */
82 struct dynbuf cname[DOH_MAX_CNAME];
83 struct dohaddr addr[DOH_MAX_ADDR];
91 DOHcode doh_encode(const char *host,
93 unsigned char *dnsp, /* buffer */
94 size_t len, /* buffer size */
95 size_t *olen); /* output length */
96 DOHcode doh_decode(const unsigned char *doh,
100 void de_init(struct dohentry *d);
101 void de_cleanup(struct dohentry *d);
104 #else /* if DoH is disabled */
105 #define Curl_doh(a,b,c,d) NULL
106 #define Curl_doh_is_resolved(x,y) CURLE_COULDNT_RESOLVE_HOST
109 #endif /* HEADER_CURL_DOH_H */