diff options
author | Reto Guadagnini <rguadagn@hsr.ch> | 2012-03-27 18:37:24 +0200 |
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committer | Tobias Brunner <tobias@strongswan.org> | 2013-02-19 11:57:21 +0100 |
commit | 4a335a2164aabadd9bbe56ea56c003565348c798 (patch) | |
tree | 1390431b1d6d96b1f55280f9fdf2028ae3ad81fe /src/libstrongswan/plugins/unbound | |
parent | 9f963a7cfcececbbaf5bb211d6dd96620a76ffe2 (diff) | |
download | strongswan-4a335a2164aabadd9bbe56ea56c003565348c798.tar.bz2 strongswan-4a335a2164aabadd9bbe56ea56c003565348c798.tar.xz |
unbound: Implemented rr_t as unbound_rr_t
Diffstat (limited to 'src/libstrongswan/plugins/unbound')
-rw-r--r-- | src/libstrongswan/plugins/unbound/Makefile.am | 4 | ||||
-rw-r--r-- | src/libstrongswan/plugins/unbound/unbound_rr.c | 164 | ||||
-rw-r--r-- | src/libstrongswan/plugins/unbound/unbound_rr.h | 48 |
3 files changed, 215 insertions, 1 deletions
diff --git a/src/libstrongswan/plugins/unbound/Makefile.am b/src/libstrongswan/plugins/unbound/Makefile.am index 3bb7af6e2..e6de06150 100644 --- a/src/libstrongswan/plugins/unbound/Makefile.am +++ b/src/libstrongswan/plugins/unbound/Makefile.am @@ -10,7 +10,9 @@ plugin_LTLIBRARIES = libstrongswan-unbound.la endif libstrongswan_unbound_la_SOURCES = \ - unbound_plugin.h unbound_plugin.c unbound_resolver.c unbound_resolver.h + unbound_plugin.h unbound_plugin.c \ + unbound_resolver.c unbound_resolver.h \ + unbound_rr.h unbound_rr.c libstrongswan_unbound_la_LDFLAGS = -module -avoid-version libstrongswan_unbound_la_LIBADD = -lunbound -lldns diff --git a/src/libstrongswan/plugins/unbound/unbound_rr.c b/src/libstrongswan/plugins/unbound/unbound_rr.c new file mode 100644 index 000000000..97c3b1933 --- /dev/null +++ b/src/libstrongswan/plugins/unbound/unbound_rr.c @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2012 Reto Guadagnini + * Hochschule fuer Technik Rapperswil + * + * 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 the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program 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 General Public License + * for more details. + */ + +#include <resolver/rr.h> + +#include <library.h> +#include <utils/debug.h> + +#include <stdlib.h> +#include <string.h> + +#include "unbound_rr.h" + +typedef struct private_unbound_rr_t private_unbound_rr_t; + +/** + * private data of an unbound_rr_t object. + */ +struct private_unbound_rr_t { + + /** + * Public data + */ + unbound_rr_t public; + + /** + * Owner name + */ + char* name; + + /** + * Type + */ + rr_type_t type; + + /** + * Class + */ + rr_class_t class; + + /** + * TTL + */ + uint32_t ttl; + + /** + * Size of the rdata field in octets + */ + uint16_t size; + + /** + * RDATA field (array of bytes in network order) + */ + u_char *rdata; +}; + +METHOD(rr_t, get_name, char *, + private_unbound_rr_t *this) +{ + return this->name; +} + +METHOD(rr_t, get_type, rr_type_t, + private_unbound_rr_t *this) +{ + return this->type; +} + +METHOD(rr_t, get_class, rr_class_t, + private_unbound_rr_t *this) +{ + return this->class; +} + +METHOD(rr_t, get_ttl, uint32_t, + private_unbound_rr_t *this) +{ + return this->ttl; +} + +METHOD(rr_t, get_rdata, chunk_t, + private_unbound_rr_t *this) +{ + return chunk_create(this->rdata, this->size); +} + +METHOD(rr_t, destroy, void, + private_unbound_rr_t *this) +{ + free(this->name); + free(this->rdata); + free(this); +} + +/* + * Described in header. + */ +unbound_rr_t *unbound_rr_create_frm_ldns_rr(ldns_rr *rr) +{ + private_unbound_rr_t *this; + ldns_status status; + ldns_buffer *buf; + int i; + + INIT(this, + .public = { + .interface = { + .get_name = _get_name, + .get_type = _get_type, + .get_class = _get_class, + .get_ttl = _get_ttl, + .get_rdata = _get_rdata, + .destroy = _destroy, + }, + }, + ); + + this->name = ldns_rdf2str(ldns_rr_owner(rr)); + if (!this->name) + { + DBG1(DBG_LIB, "failed to parse the owner name of a DNS RR"); + _destroy(this); + return NULL; + } + + this->type = ldns_rr_get_type(rr); + this->class = ldns_rr_get_class(rr); + this->ttl = ldns_rr_ttl(rr); + for(i = 0; i < ldns_rr_rd_count(rr); i++) + { + this->size += ldns_rdf_size(ldns_rr_rdf(rr, i)); + } + + /** + * The ldns library splits the RDATA field of a RR in various rdf. + * Here we reassemble these rdf to get the RDATA field of the RR. + */ + buf = ldns_buffer_new(LDNS_MIN_BUFLEN); + /* The buffer will be resized automatically by ldns_rr_rdata2buffer_wire() */ + status = ldns_rr_rdata2buffer_wire(buf, rr); + + if (status != LDNS_STATUS_OK) + { + DBG1(DBG_LIB, "failed to get the RDATA field of a DNS RR"); + _destroy(this); + return NULL; + } + + this->rdata = ldns_buffer_export(buf); + + return &this->public; +} diff --git a/src/libstrongswan/plugins/unbound/unbound_rr.h b/src/libstrongswan/plugins/unbound/unbound_rr.h new file mode 100644 index 000000000..d7c114f86 --- /dev/null +++ b/src/libstrongswan/plugins/unbound/unbound_rr.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2012 Reto Guadagnini + * Hochschule fuer Technik Rapperswil + * + * 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 the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program 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 General Public License + * for more details. + */ + +/** + * @defgroup unbound_rr unbound_rr + * @{ @ingroup unbound_p + */ + +#ifndef UNBOUND_RR_H_ +#define UNBOUND_RR_H_ + +#include <resolver/rr.h> +#include <ldns/ldns.h> + +typedef struct unbound_rr_t unbound_rr_t; + +/** + * Implementation of the Resource Record interface using libunbound and libldns. + */ +struct unbound_rr_t { + + /** + * Implements the Resource Record interface + */ + rr_t interface; +}; + +/** + * Create an unbound_rr instance from a Resource Record given by + * a ldns_struct_rr from the ldns library. + * + * @return Resource Record, NULL on error + */ +unbound_rr_t *unbound_rr_create_frm_ldns_rr(ldns_rr *rr); + +#endif /** UNBOUND_RR_H_ @}*/ |