net/rxrpc/key.c

49  * parse an RxKAD type XDR format token
56 	struct rxrpc_key_token *token, **pptoken;
74 	plen = sizeof(*token) + sizeof(*token->kad) + tktlen;
77 	plen -= sizeof(*token);
78 	token = kzalloc(sizeof(*token), GFP_KERNEL);
79 	if (!token)
82 	token->kad = kzalloc(plen, GFP_KERNEL);
83 	if (!token->kad) {
84 		kfree(token);
88 	token->security_index	= RXRPC_SECURITY_RXKAD;
89 	token->kad->ticket_len	= tktlen;
90 	token->kad->vice_id	= ntohl(xdr[0]);
91 	token->kad->kvno	= ntohl(xdr[1]);
92 	token->kad->start	= ntohl(xdr[4]);
93 	token->kad->expiry	= ntohl(xdr[5]);
94 	token->kad->primary_flag = ntohl(xdr[6]);
95 	memcpy(&token->kad->session_key, &xdr[2], 8);
96 	memcpy(&token->kad->ticket, &xdr[8], tktlen);
98 	_debug("SCIX: %u", token->security_index);
99 	_debug("TLEN: %u", token->kad->ticket_len);
100 	_debug("EXPY: %x", token->kad->expiry);
101 	_debug("KVNO: %u", token->kad->kvno);
102 	_debug("PRIM: %u", token->kad->primary_flag);
104 	       token->kad->session_key[0], token->kad->session_key[1],
105 	       token->kad->session_key[2], token->kad->session_key[3],
106 	       token->kad->session_key[4], token->kad->session_key[5],
107 	       token->kad->session_key[6], token->kad->session_key[7]);
108 	if (token->kad->ticket_len >= 8)
110 		       token->kad->ticket[0], token->kad->ticket[1],
111 		       token->kad->ticket[2], token->kad->ticket[3],
112 		       token->kad->ticket[4], token->kad->ticket[5],
113 		       token->kad->ticket[6], token->kad->ticket[7]);
123 	*pptoken = token;
124 	expiry = rxrpc_u32_to_time64(token->kad->expiry);
138 	const __be32 *xdr = prep->data, *token, *p;
182 	/* get the token count */
191 	/* check each token wrapper */
200 		_debug("token: [%x/%zx] %x", toklen, datalen, sec_ix);
219 		token = xdr;
222 		sec_ix = ntohl(*token++);
229 			ret2 = rxrpc_preparse_xdr_rxkad(prep, datalen, token, toklen);
280 	struct rxrpc_key_token *token, **pp;
342 	plen = sizeof(*token->kad) + v1->ticket_length;
343 	prep->quotalen = plen + sizeof(*token);
346 	token = kzalloc(sizeof(*token), GFP_KERNEL);
347 	if (!token)
349 	token->kad = kzalloc(plen, GFP_KERNEL);
350 	if (!token->kad)
353 	token->security_index		= RXRPC_SECURITY_RXKAD;
354 	token->kad->ticket_len		= v1->ticket_length;
355 	token->kad->expiry		= v1->expiry;
356 	token->kad->kvno		= v1->kvno;
357 	memcpy(&token->kad->session_key, &v1->session_key, 8);
358 	memcpy(&token->kad->ticket, v1->ticket, v1->ticket_length);
367 	*pp = token;
368 	expiry = rxrpc_u32_to_time64(token->kad->expiry);
371 	token = NULL;
375 	kfree(token);
381  * Free token list.
383 static void rxrpc_free_token_list(struct rxrpc_key_token *token)
387 	for (; token; token = next) {
388 		next = token->next;
389 		switch (token->security_index) {
391 			kfree(token->kad);
394 			pr_err("Unknown token type %x on rxrpc key\n",
395 			       token->security_index);
399 		kfree(token);
424 	const struct rxrpc_key_token *token;
429 	for (token = key->payload.data[0]; token; token = token->next) {
432 		switch (token->security_index) {
437 			seq_printf(m, "%u", token->security_index);
565 	const struct rxrpc_key_token *token;
584 	size += 1 * 4;	/* token count */
587 	for (token = key->payload.data[0]; token; token = token->next) {
590 		switch (token->security_index) {
594 			if (!token->no_leak_key)
595 				toksize += RND(token->kad->ticket_len);
599 			pr_err("Unsupported key token type (%u)\n",
600 			       token->security_index);
604 		_debug("token[%u]: toksize=%u", ntoks, toksize);
609 		size += toksize + 4; /* each token has a length word */
657 	for (token = key->payload.data[0]; token; token = token->next) {
661 		ENCODE(token->security_index);
663 		switch (token->security_index) {
665 			ENCODE(token->kad->vice_id);
666 			ENCODE(token->kad->kvno);
667 			ENCODE_BYTES(8, token->kad->session_key);
668 			ENCODE(token->kad->start);
669 			ENCODE(token->kad->expiry);
670 			ENCODE(token->kad->primary_flag);
671 			if (token->no_leak_key)
674 				ENCODE_DATA(token->kad->ticket_len, token->kad->ticket);
678 			pr_err("Unsupported key token type (%u)\n",
679 			       token->security_index);