update unbound from upstream

1 files changed, 984 insertions, 0 deletions

diff --git a/external/unbound/sldns/wire2str.h b/external/unbound/sldns/wire2str.h
new file mode 100644
index 000000000..67f543566
--- /dev/null
+++ b/external/unbound/sldns/wire2str.h
@@ -0,0 +1,984 @@
+/**
+ * wire2str.h -  txt presentation of RRs
+ *
+ * (c) NLnet Labs, 2005-2006
+ *
+ * See the file LICENSE for the license
+ */
+
+/**
+ * \file
+ *
+ * Contains functions to translate the wireformat to text
+ * representation, as well as functions to print them.
+ */
+
+#ifndef LDNS_WIRE2STR_H
+#define LDNS_WIRE2STR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+struct sldns_struct_lookup_table;
+
+/* lookup tables for standard DNS stuff  */
+/** Taken from RFC 2535, section 7.  */
+extern struct sldns_struct_lookup_table* sldns_algorithms;
+/** DS record hash algorithms */
+extern struct sldns_struct_lookup_table* sldns_hashes;
+/** Taken from RFC 2538, section 2.1.  */
+extern struct sldns_struct_lookup_table* sldns_cert_algorithms;
+/** Response codes */
+extern struct sldns_struct_lookup_table* sldns_rcodes;
+/** Operation codes */
+extern struct sldns_struct_lookup_table* sldns_opcodes;
+/** EDNS flags */
+extern struct sldns_struct_lookup_table* sldns_edns_flags;
+/** EDNS option codes */
+extern struct sldns_struct_lookup_table* sldns_edns_options;
+/** error string from wireparse */
+extern struct sldns_struct_lookup_table* sldns_wireparse_errors;
+
+/**
+ * Convert wireformat packet to a string representation
+ * @param data: wireformat packet data (starting at ID bytes).
+ * @param len: length of packet.
+ * @return string(malloced) or NULL on failure.
+ */
+char* sldns_wire2str_pkt(uint8_t* data, size_t len);
+
+/**
+ * Convert wireformat RR to a string representation.
+ * @param rr: the wireformat RR, in uncompressed form.  Starts at the domain
+ * 	name start, ends with the rdata of the RR.
+ * @param len: length of the rr wireformat.
+ * @return string(malloced) or NULL on failure.
+ */
+char* sldns_wire2str_rr(uint8_t* rr, size_t len);
+
+/**
+ * Conver wire dname to a string.
+ * @param dname: the dname in uncompressed wireformat.
+ * @param dname_len: length of the dname.
+ * @return string or NULL on failure.
+ */
+char* sldns_wire2str_dname(uint8_t* dname, size_t dname_len);
+
+/**
+ * Convert wire RR type to a string, 'MX', 'TYPE1234'...
+ * @param rrtype: the RR type in host order.
+ * @return malloced string with the RR type or NULL on malloc failure.
+ */
+char* sldns_wire2str_type(uint16_t rrtype);
+
+/**
+ * Convert wire RR class to a string, 'IN', 'CLASS1'.
+ * @param rrclass: the RR class in host order.
+ * @return malloced string with the RR class or NULL on malloc failure.
+ */
+char* sldns_wire2str_class(uint16_t rrclass);
+
+/**
+ * Convert wire packet rcode to a string, 'NOERROR', 'NXDOMAIN'...
+ * @param rcode: as integer, host order
+ * @return malloced string with the rcode or NULL on malloc failure.
+ */
+char* sldns_wire2str_rcode(int rcode);
+
+/**
+ * Print to string, move string along for next content. With va_list.
+ * @param str: string buffer.  Adjusted at end to after the output.
+ * @param slen: length of the string buffer.  Adjusted at end.
+ * @param format: printf format string.
+ * @param args: arguments for printf.
+ * @return number of characters needed. Can be larger than slen.
+ */
+int sldns_str_vprint(char** str, size_t* slen, const char* format, va_list args);
+
+/**
+ * Print to string, move string along for next content.
+ * @param str: string buffer.  Adjusted at end to after the output.
+ * @param slen: length of the string buffer.  Adjusted at end.
+ * @param format: printf format string and arguments for it.
+ * @return number of characters needed. Can be larger than slen.
+ */
+int sldns_str_print(char** str, size_t* slen, const char* format, ...)
+	ATTR_FORMAT(printf, 3, 4);
+
+/**
+ * Convert wireformat packet to a string representation with user buffer
+ * It appends every RR with default comments.
+ * For more formatter options use the function: TBD(TODO)
+ * @param data: wireformat packet data (starting at ID bytes).
+ * @param data_len: length of packet.
+ * @param str: the string buffer for the output.
+ * 	If you pass NULL as the str the return value of the function is
+ * 	the str_len you need for the entire packet.  It does not include
+ * 	the 0 byte at the end.
+ * @param str_len: the size of the string buffer.  If more is needed, it'll
+ * 	silently truncate the output to fit in the buffer.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_pkt_buf(uint8_t* data, size_t data_len, char* str,
+	size_t str_len);
+
+/**
+ * Scan wireformat packet to a string representation with user buffer
+ * It appends every RR with default comments.
+ * For more formatter options use the function: TBD(TODO)
+ * @param data: wireformat packet data (starting at ID bytes).
+ * @param data_len: length of packet.
+ * @param str: the string buffer for the output.
+ * @param str_len: the size of the string buffer.
+ * @return number of characters for string.
+ * returns the number of characters that are needed (except terminating null),
+ * so it may return a value larger than str_len.
+ * On error you get less output (i.e. shorter output in str (null terminated))
+ * On exit the data, data_len, str and str_len values are adjusted to move them
+ * from their original position along the input and output for the content
+ * that has been consumed (and produced) by this function.  If the end of the
+ * output string is reached, *str_len is set to 0.  The output string is null
+ * terminated (shortening the output if necessary).  If the end of the input
+ * is reached *data_len is set to 0.
+ */
+int sldns_wire2str_pkt_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat rr to string, with user buffers.  It shifts the arguments
+ * to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rr_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat question rr to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rrquestion_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat RR to string in unknown RR format, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rr_unknown_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Print to string the RR-information comment in default format,
+ * with user buffers.  Moves string along.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rr: wireformat data.
+ * @param rrlen: length of data buffer.
+ * @param dname_off: offset in buffer behind owner dname, the compressed size
+ * 	of the owner name.
+ * @param rrtype: type of the RR, host format.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rr_comment_print(char** str, size_t* str_len, uint8_t* rr,
+	size_t rrlen, size_t dname_off, uint16_t rrtype);
+
+/**
+ * Scan wireformat packet header to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_header_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat rdata to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.  The length of the rdata in the
+ * 	buffer.  The rdatalen itself has already been scanned, the data
+ * 	points to the rdata after the rdatalen.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rrtype: RR type of Rdata, host format.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rdata_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint16_t rrtype, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat rdata to string in unknown format, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer, the length of the rdata in buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rdata_unknown_scan(uint8_t** data, size_t* data_len,
+	char** str, size_t* str_len);
+
+/**
+ * Scan wireformat domain name to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_dname_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat rr type to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_type_scan(uint8_t** data, size_t* data_len, char** str,
+        size_t* str_len);
+
+/**
+ * Scan wireformat rr class to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_class_scan(uint8_t** data, size_t* data_len, char** str,
+        size_t* str_len);
+
+/**
+ * Scan wireformat rr ttl to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_ttl_scan(uint8_t** data, size_t* data_len, char** str,
+        size_t* str_len);
+
+
+/**
+ * Print host format rr type to string.  Moves string along, user buffers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rrtype: host format rr type.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_type_print(char** str, size_t* str_len, uint16_t rrtype);
+
+/**
+ * Print host format rr class to string.  Moves string along, user buffers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rrclass: host format rr class.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_class_print(char** str, size_t* str_len, uint16_t rrclass);
+
+/**
+ * Print host format rcode to string.  Moves string along, user buffers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rcode: host format rcode number.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_rcode_print(char** str, size_t* str_len, int rcode);
+
+/**
+ * Print host format opcode to string.  Moves string along, user buffers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param opcode: host format opcode number.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_opcode_print(char** str, size_t* str_len, int opcode);
+
+/**
+ * Print host format EDNS0 option to string.  Moves string along, user buffers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param opcode: host format option number.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_option_code_print(char** str, size_t* str_len,
+	uint16_t opcode);
+
+/**
+ * Convert RR to string presentation format, on one line.  User buffer.
+ * @param rr: wireformat RR data
+ * @param rr_len: length of the rr wire data.
+ * @param str: the string buffer to write to.
+ * 	If you pass NULL as the str, the return value of the function is
+ * 	the str_len you need for the entire packet.  It does not include
+ * 	the 0 byte at the end.
+ * @param str_len: the size of the string buffer.  If more is needed, it'll
+ * 	silently truncate the output to fit in the buffer.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_rr_buf(uint8_t* rr, size_t rr_len, char* str,
+	size_t str_len);
+
+/**
+ * 3597 printout of an RR in unknown rr format.
+ * There are more format and comment options available for printout
+ * with the function: TBD(TODO)
+ * @param rr: wireformat RR data
+ * @param rr_len: length of the rr wire data.
+ * @param str: the string buffer to write to.
+ * 	If you pass NULL as the str, the return value of the function is
+ * 	the str_len you need for the entire rr.  It does not include
+ * 	the 0 byte at the end.
+ * @param str_len: the size of the string buffer.  If more is needed, it'll
+ * 	silently truncate the output to fit in the buffer.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_rr_unknown_buf(uint8_t* rr, size_t rr_len, char* str,
+	size_t str_len);
+
+/**
+ * This creates the comment to print after the RR. ; keytag=... , and other
+ * basic comments for RRs.
+ * There are more format and comment options available for printout
+ * with the function: TBD(TODO)
+ * @param rr: wireformat RR data
+ * @param rr_len: length of the rr wire data.
+ * @param dname_len: length of the dname in front of the RR.
+ * @param str: the string buffer to write to.
+ * 	If you pass NULL as the str, the return value of the function is
+ * 	the str_len you need for the entire comment.  It does not include
+ * 	the 0 byte at the end.
+ * @param str_len: the size of the string buffer.  If more is needed, it'll
+ * 	silently truncate the output to fit in the buffer.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_rr_comment_buf(uint8_t* rr, size_t rr_len, size_t dname_len,
+	char* str, size_t str_len);
+
+/**
+ * Convert RDATA to string presentation format, on one line.  User buffer.
+ * @param rdata: wireformat rdata part of an RR.
+ * @param rdata_len: length of the rr wire data.
+ * @param str: the string buffer to write to.
+ * 	If you pass NULL as the str, the return value of the function is
+ * 	the str_len you need for the entire packet.  It does not include
+ * 	the 0 byte at the end.
+ * @param str_len: the size of the string buffer.  If more is needed, it'll
+ * 	silently truncate the output to fit in the buffer.
+ * @param rrtype: rr type of the data
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_rdata_buf(uint8_t* rdata, size_t rdata_len, char* str,
+	size_t str_len, uint16_t rrtype);
+
+/**
+ * Convert wire RR type to a string, 'MX', 'TYPE12'.  With user buffer.
+ * @param rrtype: the RR type in host order.
+ * @param str: the string to write to.
+ * @param len: length of str.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_type_buf(uint16_t rrtype, char* str, size_t len);
+
+/**
+ * Convert wire RR class to a string, 'IN', 'CLASS12'.  With user buffer.
+ * @param rrclass: the RR class in host order.
+ * @param str: the string to write to.
+ * @param len: length of str.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_class_buf(uint16_t rrclass, char* str, size_t len);
+
+/**
+ * Convert wire RR rcode to a string, 'NOERROR', 'NXDOMAIN'.  With user buffer.
+ * @param rcode: rcode as integer in host order
+ * @param str: the string to write to.
+ * @param len: length of str.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_rcode_buf(int rcode, char* str, size_t len);
+
+/**
+ * Convert wire dname to a string, "example.com.".  With user buffer.
+ * @param dname: the dname in uncompressed wireformat.
+ * @param dname_len: length of the dname.
+ * @param str: the string to write to.
+ * @param len: length of string.
+ * @return the number of characters for this element, excluding zerobyte.
+ * 	Is larger than str_len if output was truncated.
+ */
+int sldns_wire2str_dname_buf(uint8_t* dname, size_t dname_len, char* str,
+	size_t len);
+
+/**
+ * Scan wireformat rdf field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param rdftype: the type of the rdata field, enum sldns_rdf_type.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_rdf_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, int rdftype, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat int8 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_int8_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat int16 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_int16_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat int32 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_int32_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat period field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_period_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat tsigtime field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_tsigtime_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat ip4 A field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_a_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat ip6 AAAA field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_aaaa_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat str field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_str_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat apl field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_apl_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat b32_ext field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_b32_ext_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat b64 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_b64_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat hex field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_hex_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat nsec bitmap field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_nsec_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat nsec3_salt field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_nsec3_salt_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat cert_alg field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_cert_alg_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat alg field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_alg_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat type unknown field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_unknown_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat time field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_time_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat LOC field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_loc_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat WKS field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_wks_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat NSAP field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_nsap_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat ATMA field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_atma_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat IPSECKEY field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet for decompression, if NULL no decompression.
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_ipseckey_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+/**
+ * Scan wireformat HIP (algo, HIT, pubkey) field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_hip_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat int16_data field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_int16_data_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat nsec3_next_owner field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_nsec3_next_owner_scan(uint8_t** data, size_t* data_len,
+	char** str, size_t* str_len);
+
+/**
+ * Scan wireformat ILNP64 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_ilnp64_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat EUI48 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_eui48_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat EUI64 field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_eui64_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat TAG field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_tag_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Scan wireformat long_str field to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @return number of characters (except null) needed to print.
+ * 	Can return -1 on failure.
+ */
+int sldns_wire2str_long_str_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len);
+
+/**
+ * Print EDNS LLQ option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_llq_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS UL option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_ul_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS NSID option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_nsid_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS DAU option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_dau_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS DHU option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_dhu_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS N3U option data to string.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_n3u_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print EDNS SUBNET option data to string. User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_subnet_print(char** str, size_t* str_len,
+	uint8_t* option_data, size_t option_len);
+
+/**
+ * Print an EDNS option as OPT: VALUE.  User buffers, moves string pointers.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param option_code: host format EDNS option code.
+ * @param option_data: buffer with EDNS option code data.
+ * @param option_len: length of the data for this option.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_option_print(char** str, size_t* str_len,
+	uint16_t option_code, uint8_t* option_data, size_t option_len);
+
+/**
+ * Scan wireformat EDNS OPT to string, with user buffers.
+ * It shifts the arguments to move along (see sldns_wire2str_pkt_scan).
+ * @param data: wireformat data.
+ * @param data_len: length of data buffer.
+ * @param str: string buffer.
+ * @param str_len: length of string buffer.
+ * @param pkt: packet with header and other info (may be NULL)
+ * @param pktlen: length of packet buffer.
+ * @return number of characters (except null) needed to print.
+ */
+int sldns_wire2str_edns_scan(uint8_t** data, size_t* data_len, char** str,
+	size_t* str_len, uint8_t* pkt, size_t pktlen);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LDNS_WIRE2STR_H */