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Diffstat (limited to '')
| -rw-r--r-- | contrib/librdns/parse.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/contrib/librdns/parse.h b/contrib/librdns/parse.h new file mode 100644 index 0000000..ed8cd70 --- /dev/null +++ b/contrib/librdns/parse.h @@ -0,0 +1,65 @@ +/* Copyright (c) 2014, Vsevolod Stakhov + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED ''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 AUTHOR 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. + */ +#ifndef PARSE_H_ +#define PARSE_H_ + +#include "dns_private.h" + +/** + * Compare request and reply checking names + * @param req request object + * @param in incoming packet + * @param len length of the incoming packet + * @return new position in the incoming packet or NULL if request is not equal to reply + */ +uint8_t * rdns_request_reply_cmp (struct rdns_request *req, uint8_t *in, int len); + +/** + * Parse labels in the packet + * @param in incoming packet + * @param target target to write the parsed label (out) + * @param pos output position in the packet (it/out) + * @param rep dns reply + * @param remain remaining bytes (in/out) + * @param make_name create name or just skip to the next label + * @return true if a label has been successfully parsed + */ +bool rdns_parse_labels (struct rdns_resolver *resolver, + uint8_t *in, char **target, + uint8_t **pos, struct rdns_reply *rep, + int *remain, bool make_name); + +/** + * Parse resource record + * @param in incoming packet + * @param elt new reply entry + * @param pos output position in the packet (it/out) + * @param rep dns reply + * @param remain remaining bytes (in/out) + * @return 1 if rr has been parsed, 0 if rr has been skipped and -1 if there was a parsing error + */ +int rdns_parse_rr (struct rdns_resolver *resolver, + uint8_t *in, struct rdns_reply_entry *elt, uint8_t **pos, + struct rdns_reply *rep, int *remain); + +#endif /* PARSE_H_ */ |