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- /*
- This file is part of GNUnet
- Copyright (C) 2013, 2014 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file gnsrecord/plugin_gnsrecord_dns.c
- * @brief gnsrecord plugin to provide the API for basic DNS records
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_dnsparser_lib.h"
- #include "gnunet_gnsrecord_plugin.h"
- /**
- * Convert the 'value' of a record to a string.
- *
- * @param cls closure, unused
- * @param type type of the record
- * @param data value in binary encoding
- * @param data_size number of bytes in @a data
- * @return NULL on error, otherwise human-readable representation of the value
- */
- static char *
- dns_value_to_string (void *cls,
- uint32_t type,
- const void *data,
- size_t data_size)
- {
- char *result;
- char tmp[INET6_ADDRSTRLEN];
- switch (type)
- {
- case GNUNET_DNSPARSER_TYPE_A:
- if (data_size != sizeof(struct in_addr))
- return NULL;
- if (NULL == inet_ntop (AF_INET, data, tmp, sizeof(tmp)))
- return NULL;
- return GNUNET_strdup (tmp);
- case GNUNET_DNSPARSER_TYPE_NS: {
- char *ns;
- size_t off;
- off = 0;
- ns = GNUNET_DNSPARSER_parse_name (data, data_size, &off);
- if ((NULL == ns) || (off != data_size))
- {
- GNUNET_break_op (0);
- GNUNET_free_non_null (ns);
- return NULL;
- }
- return ns;
- }
- case GNUNET_DNSPARSER_TYPE_CNAME: {
- char *cname;
- size_t off;
- off = 0;
- cname = GNUNET_DNSPARSER_parse_name (data, data_size, &off);
- if ((NULL == cname) || (off != data_size))
- {
- GNUNET_break_op (0);
- GNUNET_free_non_null (cname);
- return NULL;
- }
- return cname;
- }
- case GNUNET_DNSPARSER_TYPE_SOA: {
- struct GNUNET_DNSPARSER_SoaRecord *soa;
- size_t off;
- off = 0;
- soa = GNUNET_DNSPARSER_parse_soa (data, data_size, &off);
- if ((NULL == soa) || (off != data_size))
- {
- GNUNET_break_op (0);
- if (NULL != soa)
- GNUNET_DNSPARSER_free_soa (soa);
- return NULL;
- }
- GNUNET_asprintf (&result,
- "rname=%s mname=%s %lu,%lu,%lu,%lu,%lu",
- soa->rname,
- soa->mname,
- soa->serial,
- soa->refresh,
- soa->retry,
- soa->expire,
- soa->minimum_ttl);
- GNUNET_DNSPARSER_free_soa (soa);
- return result;
- }
- case GNUNET_DNSPARSER_TYPE_PTR: {
- char *ptr;
- size_t off;
- off = 0;
- ptr = GNUNET_DNSPARSER_parse_name (data, data_size, &off);
- if ((NULL == ptr) || (off != data_size))
- {
- GNUNET_break_op (0);
- GNUNET_free_non_null (ptr);
- return NULL;
- }
- return ptr;
- }
- case GNUNET_DNSPARSER_TYPE_CERT: {
- struct GNUNET_DNSPARSER_CertRecord *cert;
- size_t off;
- char *base64;
- int len;
- off = 0;
- cert = GNUNET_DNSPARSER_parse_cert (data, data_size, &off);
- if ((NULL == cert) || (off != data_size))
- {
- GNUNET_break_op (0);
- GNUNET_DNSPARSER_free_cert (cert);
- return NULL;
- }
- len = GNUNET_STRINGS_base64_encode (cert->certificate_data,
- cert->certificate_size,
- &base64);
- GNUNET_asprintf (&result,
- "%u %u %u %.*s",
- cert->cert_type,
- cert->cert_tag,
- cert->algorithm,
- len,
- base64);
- GNUNET_free (base64);
- GNUNET_DNSPARSER_free_cert (cert);
- return result;
- }
- case GNUNET_DNSPARSER_TYPE_MX: {
- struct GNUNET_DNSPARSER_MxRecord *mx;
- size_t off;
- off = 0;
- mx = GNUNET_DNSPARSER_parse_mx (data, data_size, &off);
- if ((NULL == mx) || (off != data_size))
- {
- GNUNET_break_op (0);
- GNUNET_DNSPARSER_free_mx (mx);
- return NULL;
- }
- GNUNET_asprintf (&result,
- "%u,%s",
- (unsigned int) mx->preference,
- mx->mxhost);
- GNUNET_DNSPARSER_free_mx (mx);
- return result;
- }
- case GNUNET_DNSPARSER_TYPE_TXT:
- return GNUNET_strndup (data, data_size);
- case GNUNET_DNSPARSER_TYPE_AAAA:
- if (data_size != sizeof(struct in6_addr))
- return NULL;
- if (NULL == inet_ntop (AF_INET6, data, tmp, sizeof(tmp)))
- return NULL;
- return GNUNET_strdup (tmp);
- case GNUNET_DNSPARSER_TYPE_SRV: {
- struct GNUNET_DNSPARSER_SrvRecord *srv;
- size_t off;
- off = 0;
- srv = GNUNET_DNSPARSER_parse_srv (data, data_size, &off);
- if ((NULL == srv) || (off != data_size))
- {
- GNUNET_break_op (0);
- if (NULL != srv)
- GNUNET_DNSPARSER_free_srv (srv);
- return NULL;
- }
- GNUNET_asprintf (&result,
- "%d %d %d %s",
- srv->priority,
- srv->weight,
- srv->port,
- srv->target);
- GNUNET_DNSPARSER_free_srv (srv);
- return result;
- }
- case GNUNET_DNSPARSER_TYPE_TLSA: {
- const struct GNUNET_TUN_DnsTlsaRecord *tlsa;
- char *tlsa_str;
- char *hex;
- if (data_size < sizeof(struct GNUNET_TUN_DnsTlsaRecord))
- return NULL; /* malformed */
- tlsa = data;
- hex =
- GNUNET_DNSPARSER_bin_to_hex (&tlsa[1],
- data_size
- - sizeof(struct GNUNET_TUN_DnsTlsaRecord));
- if (0 == GNUNET_asprintf (&tlsa_str,
- "%u %u %u %s",
- (unsigned int) tlsa->usage,
- (unsigned int) tlsa->selector,
- (unsigned int) tlsa->matching_type,
- hex))
- {
- GNUNET_free (hex);
- GNUNET_free (tlsa_str);
- return NULL;
- }
- GNUNET_free (hex);
- return tlsa_str;
- }
- case GNUNET_DNSPARSER_TYPE_CAA: { // RFC6844
- const struct GNUNET_DNSPARSER_CaaRecord *caa;
- char tag[15]; // between 1 and 15 bytes
- char value[data_size];
- char *caa_str;
- if (data_size < sizeof(struct GNUNET_DNSPARSER_CaaRecord))
- return NULL; /* malformed */
- caa = data;
- if ((1 > caa->tag_len) || (15 < caa->tag_len))
- return NULL; /* malformed */
- memset (tag, 0, sizeof(tag));
- memset (value, 0, data_size);
- memcpy (tag, &caa[1], caa->tag_len);
- memcpy (value,
- (char *) &caa[1] + caa->tag_len,
- data_size - caa->tag_len - 2);
- if (0 == GNUNET_asprintf (&caa_str,
- "%u %s %s",
- (unsigned int) caa->flags,
- tag,
- value))
- {
- GNUNET_free (caa_str);
- return NULL;
- }
- return caa_str;
- }
- default:
- return NULL;
- }
- }
- /**
- * Convert RFC 4394 Mnemonics to the corresponding integer values.
- *
- * @param mnemonic string to look up
- * @return the value, 0 if not found
- */
- static unsigned int
- rfc4398_mnemonic_to_value (const char *mnemonic)
- {
- static struct
- {
- const char *mnemonic;
- unsigned int val;
- } table[] = { { "PKIX", 1 },
- { "SPKI", 2 },
- { "PGP", 3 },
- { "IPKIX", 4 },
- { "ISPKI", 5 },
- { "IPGP", 6 },
- { "ACPKIX", 7 },
- { "IACPKIX", 8 },
- { "URI", 253 },
- { "OID", 254 },
- { NULL, 0 } };
- unsigned int i;
- for (i = 0; NULL != table[i].mnemonic; i++)
- if (0 == strcasecmp (mnemonic, table[i].mnemonic))
- return table[i].val;
- return 0;
- }
- /**
- * Convert RFC 4034 algorithm types to the corresponding integer values.
- *
- * @param mnemonic string to look up
- * @return the value, 0 if not found
- */
- static unsigned int
- rfc4034_mnemonic_to_value (const char *mnemonic)
- {
- static struct
- {
- const char *mnemonic;
- unsigned int val;
- } table[] = { { "RSAMD5", 1 },
- { "DH", 2 },
- { "DSA", 3 },
- { "ECC", 4 },
- { "RSASHA1", 5 },
- { "INDIRECT", 252 },
- { "PRIVATEDNS", 253 },
- { "PRIVATEOID", 254 },
- { NULL, 0 } };
- unsigned int i;
- for (i = 0; NULL != table[i].mnemonic; i++)
- if (0 == strcasecmp (mnemonic, table[i].mnemonic))
- return table[i].val;
- return 0;
- }
- /**
- * Convert human-readable version of a 'value' of a record to the binary
- * representation.
- *
- * @param cls closure, unused
- * @param type type of the record
- * @param s human-readable string
- * @param data set to value in binary encoding (will be allocated)
- * @param data_size set to number of bytes in @a data
- * @return #GNUNET_OK on success
- */
- static int
- dns_string_to_value (void *cls,
- uint32_t type,
- const char *s,
- void **data,
- size_t *data_size)
- {
- struct in_addr value_a;
- struct in6_addr value_aaaa;
- struct GNUNET_TUN_DnsTlsaRecord *tlsa;
- if (NULL == s)
- return GNUNET_SYSERR;
- switch (type)
- {
- case GNUNET_DNSPARSER_TYPE_A:
- if (1 != inet_pton (AF_INET, s, &value_a))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse IPv4 address `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- *data = GNUNET_new (struct in_addr);
- GNUNET_memcpy (*data, &value_a, sizeof(value_a));
- *data_size = sizeof(value_a);
- return GNUNET_OK;
- case GNUNET_DNSPARSER_TYPE_NS: {
- char nsbuf[256];
- size_t off;
- off = 0;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_builder_add_name (nsbuf, sizeof(nsbuf), &off, s))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize NS record with value `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, nsbuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_CNAME: {
- char cnamebuf[256];
- size_t off;
- off = 0;
- if (GNUNET_OK != GNUNET_DNSPARSER_builder_add_name (cnamebuf,
- sizeof(cnamebuf),
- &off,
- s))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize CNAME record with value `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, cnamebuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_CERT: {
- char *sdup;
- const char *typep;
- const char *keyp;
- const char *algp;
- const char *certp;
- unsigned int type;
- unsigned int key;
- unsigned int alg;
- size_t cert_size;
- char *cert_data;
- struct GNUNET_DNSPARSER_CertRecord cert;
- sdup = GNUNET_strdup (s);
- typep = strtok (sdup, " ");
- if ((NULL == typep) ||
- ((0 == (type = rfc4398_mnemonic_to_value (typep))) &&
- ((1 != sscanf (typep, "%u", &type)) || (type > UINT16_MAX))))
- {
- GNUNET_free (sdup);
- return GNUNET_SYSERR;
- }
- keyp = strtok (NULL, " ");
- if ((NULL == keyp) || (1 != sscanf (keyp, "%u", &key)) ||
- (key > UINT16_MAX))
- {
- GNUNET_free (sdup);
- return GNUNET_SYSERR;
- }
- alg = 0;
- algp = strtok (NULL, " ");
- if ((NULL == algp) ||
- ((0 == (type = rfc4034_mnemonic_to_value (typep))) &&
- ((1 != sscanf (algp, "%u", &alg)) || (alg > UINT8_MAX))))
- {
- GNUNET_free (sdup);
- return GNUNET_SYSERR;
- }
- certp = strtok (NULL, " ");
- if ((NULL == certp) || (0 == strlen (certp)))
- {
- GNUNET_free (sdup);
- return GNUNET_SYSERR;
- }
- cert_size = GNUNET_STRINGS_base64_decode (certp,
- strlen (certp),
- (void **) &cert_data);
- GNUNET_free (sdup);
- cert.cert_type = type;
- cert.cert_tag = key;
- cert.algorithm = alg;
- cert.certificate_size = cert_size;
- cert.certificate_data = cert_data;
- {
- char certbuf[cert_size + sizeof(struct GNUNET_TUN_DnsCertRecord)];
- size_t off;
- off = 0;
- if (GNUNET_OK != GNUNET_DNSPARSER_builder_add_cert (certbuf,
- sizeof(certbuf),
- &off,
- &cert))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize CERT record with %u bytes\n"),
- (unsigned int) cert_size);
- GNUNET_free (cert_data);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, certbuf, off);
- }
- GNUNET_free (cert_data);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_SOA: {
- struct GNUNET_DNSPARSER_SoaRecord soa;
- char soabuf[540];
- char soa_rname[253 + 1];
- char soa_mname[253 + 1];
- unsigned int soa_serial;
- unsigned int soa_refresh;
- unsigned int soa_retry;
- unsigned int soa_expire;
- unsigned int soa_min;
- size_t off;
- if (7 != sscanf (s,
- "rname=%253s mname=%253s %u,%u,%u,%u,%u",
- soa_rname,
- soa_mname,
- &soa_serial,
- &soa_refresh,
- &soa_retry,
- &soa_expire,
- &soa_min))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse SOA record `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- soa.mname = soa_mname;
- soa.rname = soa_rname;
- soa.serial = (uint32_t) soa_serial;
- soa.refresh = (uint32_t) soa_refresh;
- soa.retry = (uint32_t) soa_retry;
- soa.expire = (uint32_t) soa_expire;
- soa.minimum_ttl = (uint32_t) soa_min;
- off = 0;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_builder_add_soa (soabuf, sizeof(soabuf), &off, &soa))
- {
- GNUNET_log (
- GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize SOA record with mname `%s' and rname `%s'\n"),
- soa_mname,
- soa_rname);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, soabuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_PTR: {
- char ptrbuf[256];
- size_t off;
- off = 0;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_builder_add_name (ptrbuf, sizeof(ptrbuf), &off, s))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize PTR record with value `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, ptrbuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_MX: {
- struct GNUNET_DNSPARSER_MxRecord mx;
- char mxbuf[258];
- char mxhost[253 + 1];
- unsigned int mx_pref;
- size_t off;
- if (2 != sscanf (s, "%u,%253s", &mx_pref, mxhost))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse MX record `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- mx.preference = (uint16_t) mx_pref;
- mx.mxhost = mxhost;
- off = 0;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_builder_add_mx (mxbuf, sizeof(mxbuf), &off, &mx))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize MX record with hostname `%s'\n"),
- mxhost);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, mxbuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_SRV: {
- struct GNUNET_DNSPARSER_SrvRecord srv;
- char srvbuf[270];
- char srvtarget[253 + 1];
- unsigned int priority;
- unsigned int weight;
- unsigned int port;
- size_t off;
- if (4 != sscanf (s, "%u %u %u %253s", &priority, &weight, &port,
- srvtarget))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse SRV record `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- srv.priority = (uint16_t) priority;
- srv.weight = (uint16_t) weight;
- srv.port = (uint16_t) port;
- srv.target = srvtarget;
- off = 0;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_builder_add_srv (srvbuf, sizeof(srvbuf), &off, &srv))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to serialize SRV record with target `%s'\n"),
- srvtarget);
- return GNUNET_SYSERR;
- }
- *data_size = off;
- *data = GNUNET_malloc (off);
- GNUNET_memcpy (*data, srvbuf, off);
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_TXT:
- *data = GNUNET_strdup (s);
- *data_size = strlen (s);
- return GNUNET_OK;
- case GNUNET_DNSPARSER_TYPE_AAAA:
- if (1 != inet_pton (AF_INET6, s, &value_aaaa))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse IPv6 address `%s'\n"),
- s);
- return GNUNET_SYSERR;
- }
- *data = GNUNET_new (struct in6_addr);
- *data_size = sizeof(struct in6_addr);
- GNUNET_memcpy (*data, &value_aaaa, sizeof(value_aaaa));
- return GNUNET_OK;
- case GNUNET_DNSPARSER_TYPE_TLSA: {
- unsigned int usage;
- unsigned int selector;
- unsigned int matching_type;
- size_t slen = strlen (s) + 1;
- char hex[slen];
- if (4 != sscanf (s, "%u %u %u %s", &usage, &selector, &matching_type,
- hex))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse TLSA record string `%s'\n"),
- s);
- *data_size = 0;
- return GNUNET_SYSERR;
- }
- *data_size = sizeof(struct GNUNET_TUN_DnsTlsaRecord) + strlen (hex) / 2;
- *data = tlsa = GNUNET_malloc (*data_size);
- tlsa->usage = (uint8_t) usage;
- tlsa->selector = (uint8_t) selector;
- tlsa->matching_type = (uint8_t) matching_type;
- if (strlen (hex) / 2 != GNUNET_DNSPARSER_hex_to_bin (hex, &tlsa[1]))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse TLSA record string `%s'\n"),
- s);
- GNUNET_free (*data);
- *data = NULL;
- *data_size = 0;
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
- }
- case GNUNET_DNSPARSER_TYPE_CAA: { // RFC6844
- struct GNUNET_DNSPARSER_CaaRecord *caa;
- unsigned int flags;
- char tag[15]; // Max tag length 15
- char value[strlen (s) + 1]; // Should be more than enough
- if (3 != sscanf (s, "%u %s %[^\n]", &flags, tag, value))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Unable to parse CAA record string `%s'\n"),
- s);
- *data_size = 0;
- return GNUNET_SYSERR;
- }
- *data_size = sizeof(struct GNUNET_DNSPARSER_CaaRecord) + strlen (tag)
- + strlen (value);
- *data = caa = GNUNET_malloc (*data_size);
- caa->flags = flags;
- memcpy (&caa[1], tag, strlen (tag));
- caa->tag_len = strlen (tag);
- memcpy ((char *) &caa[1] + caa->tag_len, value, strlen (value));
- return GNUNET_OK;
- }
- default:
- return GNUNET_SYSERR;
- }
- }
- /**
- * Mapping of record type numbers to human-readable
- * record type names.
- */
- static struct
- {
- const char *name;
- uint32_t number;
- } name_map[] = { { "A", GNUNET_DNSPARSER_TYPE_A },
- { "NS", GNUNET_DNSPARSER_TYPE_NS },
- { "CNAME", GNUNET_DNSPARSER_TYPE_CNAME },
- { "SOA", GNUNET_DNSPARSER_TYPE_SOA },
- { "PTR", GNUNET_DNSPARSER_TYPE_PTR },
- { "MX", GNUNET_DNSPARSER_TYPE_MX },
- { "TXT", GNUNET_DNSPARSER_TYPE_TXT },
- { "AAAA", GNUNET_DNSPARSER_TYPE_AAAA },
- { "SRV", GNUNET_DNSPARSER_TYPE_SRV },
- { "TLSA", GNUNET_DNSPARSER_TYPE_TLSA },
- { "CERT", GNUNET_DNSPARSER_TYPE_CERT },
- { "CAA", GNUNET_DNSPARSER_TYPE_CAA },
- { NULL, UINT32_MAX } };
- /**
- * Convert a type name (i.e. "AAAA") to the corresponding number.
- *
- * @param cls closure, unused
- * @param dns_typename name to convert
- * @return corresponding number, UINT32_MAX on error
- */
- static uint32_t
- dns_typename_to_number (void *cls, const char *dns_typename)
- {
- unsigned int i;
- i = 0;
- while ((NULL != name_map[i].name) &&
- (0 != strcasecmp (dns_typename, name_map[i].name)))
- i++;
- return name_map[i].number;
- }
- /**
- * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
- *
- * @param cls closure, unused
- * @param type number of a type to convert
- * @return corresponding typestring, NULL on error
- */
- static const char *
- dns_number_to_typename (void *cls, uint32_t type)
- {
- unsigned int i;
- i = 0;
- while ((NULL != name_map[i].name) && (type != name_map[i].number))
- i++;
- return name_map[i].name;
- }
- /**
- * Entry point for the plugin.
- *
- * @param cls NULL
- * @return the exported block API
- */
- void *
- libgnunet_plugin_gnsrecord_dns_init (void *cls)
- {
- struct GNUNET_GNSRECORD_PluginFunctions *api;
- api = GNUNET_new (struct GNUNET_GNSRECORD_PluginFunctions);
- api->value_to_string = &dns_value_to_string;
- api->string_to_value = &dns_string_to_value;
- api->typename_to_number = &dns_typename_to_number;
- api->number_to_typename = &dns_number_to_typename;
- return api;
- }
- /**
- * Exit point from the plugin.
- *
- * @param cls the return value from #libgnunet_plugin_block_test_init
- * @return NULL
- */
- void *
- libgnunet_plugin_gnsrecord_dns_done (void *cls)
- {
- struct GNUNET_GNSRECORD_PluginFunctions *api = cls;
- GNUNET_free (api);
- return NULL;
- }
- /* end of plugin_gnsrecord_dns.c */
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