1 // SPDX-License-Identifier: GPL-2.0-or-later
22  * look_up_OID - Find an OID registration for the specified data
23  * @data: Binary representation of the OID
26 enum OID look_up_OID(const void *data, size_t datasize)  in look_up_OID()  argument
28 	const unsigned char *octets = data;  in look_up_OID()
34 	/* Hash the OID data */  in look_up_OID()
35 	hash = datasize - 1;  in look_up_OID()
44 	 * order of reverse value.  in look_up_OID()
62 		len = oid_index[oid + 1] - oid_index[oid];  in look_up_OID()
73 		 * OID, so do the comparison in reverse.  in look_up_OID()
76 			unsigned char a = oid_data[oid_index[oid] + --len];  in look_up_OID()
97  * parse_OID - Parse an OID from a bytestream
98  * @data: Binary representation of the header + OID
103  * ASN1_OID | length | oid. The length indicator must equal to datasize - 2.
104  * -EBADMSG is returned if the bytestream is too short.
106 int parse_OID(const void *data, size_t datasize, enum OID *oid)  in parse_OID()  argument
108 	const unsigned char *v = data;  in parse_OID()
111 	if (datasize < 3 || v[0] != ASN1_OID || v[1] != datasize - 2)  in parse_OID()
112 		return -EBADMSG;  in parse_OID()
114 	*oid = look_up_OID(data + 2, datasize - 2);  in parse_OID()
120  * sprint_OID - Print an Object Identifier into a buffer
121  * @data: The encoded OID to print
127  * bytes is returned.  -EBADMSG is returned if the data could not be interpreted
128  * and -ENOBUFS if the buffer was too small.
130 int sprint_oid(const void *data, size_t datasize, char *buffer, size_t bufsize)  in sprint_oid()  argument
132 	const unsigned char *v = data, *end = v + datasize;  in sprint_oid()
144 		return -ENOBUFS;  in sprint_oid()
146 	bufsize -= count;  in sprint_oid()
164 			return -ENOBUFS;  in sprint_oid()
166 		bufsize -= count;  in sprint_oid()
173 	return -EBADMSG;  in sprint_oid()
178  * sprint_OID - Print an Object Identifier into a buffer
193 			 oid_index[oid + 1] - oid_index[oid],  in sprint_OID()
195 	BUG_ON(ret == -EBADMSG);  in sprint_OID()