diff options
Diffstat (limited to 'iterator/iter_scrub.h')
-rw-r--r-- | iterator/iter_scrub.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/iterator/iter_scrub.h b/iterator/iter_scrub.h new file mode 100644 index 000000000000..6b7274e4ac36 --- /dev/null +++ b/iterator/iter_scrub.h @@ -0,0 +1,69 @@ +/* + * iterator/iter_scrub.h - scrubbing, normalization, sanitization of DNS msgs. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file has routine(s) for cleaning up incoming DNS messages from + * possible useless or malicious junk in it. + */ + +#ifndef ITERATOR_ITER_SCRUB_H +#define ITERATOR_ITER_SCRUB_H +#include <ldns/buffer.h> +struct msg_parse; +struct query_info; +struct regional; +struct module_env; +struct iter_env; + +/** + * Cleanup the passed dns message. + * @param pkt: the packet itself, for resolving name compression pointers. + * the packet buffer is unaltered. + * @param msg: the parsed packet, this structure is cleaned up. + * @param qinfo: the query info that was sent to the server. Checked. + * @param zonename: the name of the last delegation point. + * Used to determine out of bailiwick information. + * @param regional: where to allocate (new) parts of the message. + * @param env: module environment with config settings and cache. + * @param ie: iterator module environment data. + * @return: false if the message is total waste. true if scrubbed with success. + */ +int scrub_message(ldns_buffer* pkt, struct msg_parse* msg, + struct query_info* qinfo, uint8_t* zonename, struct regional* regional, + struct module_env* env, struct iter_env* ie); + +#endif /* ITERATOR_ITER_SCRUB_H */ |