diff options
Diffstat (limited to 'usr.sbin/unbound/util/data/msgencode.h')
| -rw-r--r-- | usr.sbin/unbound/util/data/msgencode.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/usr.sbin/unbound/util/data/msgencode.h b/usr.sbin/unbound/util/data/msgencode.h index 30dc515cbe5..6aff06099ee 100644 --- a/usr.sbin/unbound/util/data/msgencode.h +++ b/usr.sbin/unbound/util/data/msgencode.h @@ -109,6 +109,27 @@ void qinfo_query_encode(struct sldns_buffer* pkt, struct query_info* qinfo); uint16_t calc_edns_field_size(struct edns_data* edns); /** + * Calculate the size of a specific EDNS option in packet. + * @param edns: edns data or NULL. + * @param code: the opt code to get the size of. + * @return octets the option will take up. + */ +uint16_t calc_edns_option_size(struct edns_data* edns, uint16_t code); + +/** + * Calculate the size of the EDE option(s) in packet. Also calculate seperately + * the size of the EXTRA-TEXT field(s) in case we can trim them to fit. + * In this case include any LDNS_EDE_OTHER options in their entirety since they + * are useless without extra text. + * @param edns: edns data or NULL. + * @param txt_size: the size of the EXTRA-TEXT field(s); this includes + * LDNS_EDE_OTHER in their entirety since they are useless without + * extra text. + * @return octets the option will take up. + */ +uint16_t calc_ede_option_size(struct edns_data* edns, uint16_t* txt_size); + +/** * Attach EDNS record to buffer. Buffer has complete packet. There must * be enough room left for the EDNS record. * @param pkt: packet added to. @@ -116,11 +137,11 @@ uint16_t calc_edns_field_size(struct edns_data* edns); */ void attach_edns_record(struct sldns_buffer* pkt, struct edns_data* edns); -/** +/** * Encode an error. With QR and RA set. * * @param pkt: where to store the packet. - * @param r: RCODE value to encode. + * @param r: RCODE value to encode (may contain extra flags). * @param qinfo: if not NULL, the query is included. * @param qid: query ID to set in packet. network order. * @param qflags: original query flags (to copy RD and CD bits). host order. @@ -130,4 +151,21 @@ void attach_edns_record(struct sldns_buffer* pkt, struct edns_data* edns); void error_encode(struct sldns_buffer* pkt, int r, struct query_info* qinfo, uint16_t qid, uint16_t qflags, struct edns_data* edns); +/** + * Encode an extended error. With QR and RA set. + * + * @param pkt: where to store the packet. + * @param rcode: Extended RCODE value to encode. + * @param qinfo: if not NULL, the query is included. + * @param qid: query ID to set in packet. network order. + * @param qflags: original query flags (to copy RD and CD bits). host order. + * @param xflags: extra flags to set (such as for example BIT_AA and/or BIT_TC) + * @param edns: if not NULL, this is the query edns info, + * and an edns reply is attached. Only attached if EDNS record fits reply. + * Without edns extended errors (i.e. > 15) will not be conveyed. + */ +void extended_error_encode(struct sldns_buffer* pkt, uint16_t rcode, + struct query_info* qinfo, uint16_t qid, uint16_t qflags, + uint16_t xflags, struct edns_data* edns); + #endif /* UTIL_DATA_MSGENCODE_H */ |