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authorDavid Howells <dhowells@redhat.com>2020-09-03 08:21:58 +0100
committerDavid Howells <dhowells@redhat.com>2020-11-23 18:09:29 +0000
commit8a5dc321158fb3032cf990deb7473e22826e7346 (patch)
treef2b8c70a9f563afe5e61c6d3051fe63ef3fda187 /net/rxrpc
parent8eb621698fd4c49703d512fe437d84ab822bc59e (diff)
downloadlinux-8a5dc321158fb3032cf990deb7473e22826e7346.tar.bz2
rxrpc: Remove the rxk5 security class as it's now defunct
Remove the rxrpc rxk5 security class as it's now defunct and nothing uses it anymore. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
-rw-r--r--net/rxrpc/key.c468
1 files changed, 0 insertions, 468 deletions
diff --git a/net/rxrpc/key.c b/net/rxrpc/key.c
index 2e8bd3b97301..fb4d2a2fca02 100644
--- a/net/rxrpc/key.c
+++ b/net/rxrpc/key.c
@@ -165,391 +165,6 @@ static int rxrpc_preparse_xdr_rxkad(struct key_preparsed_payload *prep,
return 0;
}
-static void rxrpc_free_krb5_principal(struct krb5_principal *princ)
-{
- int loop;
-
- if (princ->name_parts) {
- for (loop = princ->n_name_parts - 1; loop >= 0; loop--)
- kfree(princ->name_parts[loop]);
- kfree(princ->name_parts);
- }
- kfree(princ->realm);
-}
-
-static void rxrpc_free_krb5_tagged(struct krb5_tagged_data *td)
-{
- kfree(td->data);
-}
-
-/*
- * free up an RxK5 token
- */
-static void rxrpc_rxk5_free(struct rxk5_key *rxk5)
-{
- int loop;
-
- rxrpc_free_krb5_principal(&rxk5->client);
- rxrpc_free_krb5_principal(&rxk5->server);
- rxrpc_free_krb5_tagged(&rxk5->session);
-
- if (rxk5->addresses) {
- for (loop = rxk5->n_addresses - 1; loop >= 0; loop--)
- rxrpc_free_krb5_tagged(&rxk5->addresses[loop]);
- kfree(rxk5->addresses);
- }
- if (rxk5->authdata) {
- for (loop = rxk5->n_authdata - 1; loop >= 0; loop--)
- rxrpc_free_krb5_tagged(&rxk5->authdata[loop]);
- kfree(rxk5->authdata);
- }
-
- kfree(rxk5->ticket);
- kfree(rxk5->ticket2);
- kfree(rxk5);
-}
-
-/*
- * extract a krb5 principal
- */
-static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
- const __be32 **_xdr,
- unsigned int *_toklen)
-{
- const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, n_parts, loop, tmp, paddedlen;
-
- /* there must be at least one name, and at least #names+1 length
- * words */
- if (toklen <= 12)
- return -EINVAL;
-
- _enter(",{%x,%x,%x},%u",
- ntohl(xdr[0]), ntohl(xdr[1]), ntohl(xdr[2]), toklen);
-
- n_parts = ntohl(*xdr++);
- toklen -= 4;
- if (n_parts <= 0 || n_parts > AFSTOKEN_K5_COMPONENTS_MAX)
- return -EINVAL;
- princ->n_name_parts = n_parts;
-
- if (toklen <= (n_parts + 1) * 4)
- return -EINVAL;
-
- princ->name_parts = kcalloc(n_parts, sizeof(char *), GFP_KERNEL);
- if (!princ->name_parts)
- return -ENOMEM;
-
- for (loop = 0; loop < n_parts; loop++) {
- if (toklen < 4)
- return -EINVAL;
- tmp = ntohl(*xdr++);
- toklen -= 4;
- if (tmp <= 0 || tmp > AFSTOKEN_STRING_MAX)
- return -EINVAL;
- paddedlen = (tmp + 3) & ~3;
- if (paddedlen > toklen)
- return -EINVAL;
- princ->name_parts[loop] = kmalloc(tmp + 1, GFP_KERNEL);
- if (!princ->name_parts[loop])
- return -ENOMEM;
- memcpy(princ->name_parts[loop], xdr, tmp);
- princ->name_parts[loop][tmp] = 0;
- toklen -= paddedlen;
- xdr += paddedlen >> 2;
- }
-
- if (toklen < 4)
- return -EINVAL;
- tmp = ntohl(*xdr++);
- toklen -= 4;
- if (tmp <= 0 || tmp > AFSTOKEN_K5_REALM_MAX)
- return -EINVAL;
- paddedlen = (tmp + 3) & ~3;
- if (paddedlen > toklen)
- return -EINVAL;
- princ->realm = kmalloc(tmp + 1, GFP_KERNEL);
- if (!princ->realm)
- return -ENOMEM;
- memcpy(princ->realm, xdr, tmp);
- princ->realm[tmp] = 0;
- toklen -= paddedlen;
- xdr += paddedlen >> 2;
-
- _debug("%s/...@%s", princ->name_parts[0], princ->realm);
-
- *_xdr = xdr;
- *_toklen = toklen;
- _leave(" = 0 [toklen=%u]", toklen);
- return 0;
-}
-
-/*
- * extract a piece of krb5 tagged data
- */
-static int rxrpc_krb5_decode_tagged_data(struct krb5_tagged_data *td,
- size_t max_data_size,
- const __be32 **_xdr,
- unsigned int *_toklen)
-{
- const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, len, paddedlen;
-
- /* there must be at least one tag and one length word */
- if (toklen <= 8)
- return -EINVAL;
-
- _enter(",%zu,{%x,%x},%u",
- max_data_size, ntohl(xdr[0]), ntohl(xdr[1]), toklen);
-
- td->tag = ntohl(*xdr++);
- len = ntohl(*xdr++);
- toklen -= 8;
- if (len > max_data_size)
- return -EINVAL;
- paddedlen = (len + 3) & ~3;
- if (paddedlen > toklen)
- return -EINVAL;
- td->data_len = len;
-
- if (len > 0) {
- td->data = kmemdup(xdr, len, GFP_KERNEL);
- if (!td->data)
- return -ENOMEM;
- toklen -= paddedlen;
- xdr += paddedlen >> 2;
- }
-
- _debug("tag %x len %x", td->tag, td->data_len);
-
- *_xdr = xdr;
- *_toklen = toklen;
- _leave(" = 0 [toklen=%u]", toklen);
- return 0;
-}
-
-/*
- * extract an array of tagged data
- */
-static int rxrpc_krb5_decode_tagged_array(struct krb5_tagged_data **_td,
- u8 *_n_elem,
- u8 max_n_elem,
- size_t max_elem_size,
- const __be32 **_xdr,
- unsigned int *_toklen)
-{
- struct krb5_tagged_data *td;
- const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, n_elem, loop;
- int ret;
-
- /* there must be at least one count */
- if (toklen < 4)
- return -EINVAL;
-
- _enter(",,%u,%zu,{%x},%u",
- max_n_elem, max_elem_size, ntohl(xdr[0]), toklen);
-
- n_elem = ntohl(*xdr++);
- toklen -= 4;
- if (n_elem > max_n_elem)
- return -EINVAL;
- *_n_elem = n_elem;
- if (n_elem > 0) {
- if (toklen <= (n_elem + 1) * 4)
- return -EINVAL;
-
- _debug("n_elem %d", n_elem);
-
- td = kcalloc(n_elem, sizeof(struct krb5_tagged_data),
- GFP_KERNEL);
- if (!td)
- return -ENOMEM;
- *_td = td;
-
- for (loop = 0; loop < n_elem; loop++) {
- ret = rxrpc_krb5_decode_tagged_data(&td[loop],
- max_elem_size,
- &xdr, &toklen);
- if (ret < 0)
- return ret;
- }
- }
-
- *_xdr = xdr;
- *_toklen = toklen;
- _leave(" = 0 [toklen=%u]", toklen);
- return 0;
-}
-
-/*
- * extract a krb5 ticket
- */
-static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
- const __be32 **_xdr, unsigned int *_toklen)
-{
- const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, len, paddedlen;
-
- /* there must be at least one length word */
- if (toklen <= 4)
- return -EINVAL;
-
- _enter(",{%x},%u", ntohl(xdr[0]), toklen);
-
- len = ntohl(*xdr++);
- toklen -= 4;
- if (len > AFSTOKEN_K5_TIX_MAX)
- return -EINVAL;
- paddedlen = (len + 3) & ~3;
- if (paddedlen > toklen)
- return -EINVAL;
- *_tktlen = len;
-
- _debug("ticket len %u", len);
-
- if (len > 0) {
- *_ticket = kmemdup(xdr, len, GFP_KERNEL);
- if (!*_ticket)
- return -ENOMEM;
- toklen -= paddedlen;
- xdr += paddedlen >> 2;
- }
-
- *_xdr = xdr;
- *_toklen = toklen;
- _leave(" = 0 [toklen=%u]", toklen);
- return 0;
-}
-
-/*
- * parse an RxK5 type XDR format token
- * - the caller guarantees we have at least 4 words
- */
-static int rxrpc_preparse_xdr_rxk5(struct key_preparsed_payload *prep,
- size_t datalen,
- const __be32 *xdr, unsigned int toklen)
-{
- struct rxrpc_key_token *token, **pptoken;
- struct rxk5_key *rxk5;
- const __be32 *end_xdr = xdr + (toklen >> 2);
- time64_t expiry;
- int ret;
-
- _enter(",{%x,%x,%x,%x},%u",
- ntohl(xdr[0]), ntohl(xdr[1]), ntohl(xdr[2]), ntohl(xdr[3]),
- toklen);
-
- /* reserve some payload space for this subkey - the length of the token
- * is a reasonable approximation */
- prep->quotalen = datalen + toklen;
-
- token = kzalloc(sizeof(*token), GFP_KERNEL);
- if (!token)
- return -ENOMEM;
-
- rxk5 = kzalloc(sizeof(*rxk5), GFP_KERNEL);
- if (!rxk5) {
- kfree(token);
- return -ENOMEM;
- }
-
- token->security_index = RXRPC_SECURITY_RXK5;
- token->k5 = rxk5;
-
- /* extract the principals */
- ret = rxrpc_krb5_decode_principal(&rxk5->client, &xdr, &toklen);
- if (ret < 0)
- goto error;
- ret = rxrpc_krb5_decode_principal(&rxk5->server, &xdr, &toklen);
- if (ret < 0)
- goto error;
-
- /* extract the session key and the encoding type (the tag field ->
- * ENCTYPE_xxx) */
- ret = rxrpc_krb5_decode_tagged_data(&rxk5->session, AFSTOKEN_DATA_MAX,
- &xdr, &toklen);
- if (ret < 0)
- goto error;
-
- if (toklen < 4 * 8 + 2 * 4)
- goto inval;
- rxk5->authtime = be64_to_cpup((const __be64 *) xdr);
- xdr += 2;
- rxk5->starttime = be64_to_cpup((const __be64 *) xdr);
- xdr += 2;
- rxk5->endtime = be64_to_cpup((const __be64 *) xdr);
- xdr += 2;
- rxk5->renew_till = be64_to_cpup((const __be64 *) xdr);
- xdr += 2;
- rxk5->is_skey = ntohl(*xdr++);
- rxk5->flags = ntohl(*xdr++);
- toklen -= 4 * 8 + 2 * 4;
-
- _debug("times: a=%llx s=%llx e=%llx rt=%llx",
- rxk5->authtime, rxk5->starttime, rxk5->endtime,
- rxk5->renew_till);
- _debug("is_skey=%x flags=%x", rxk5->is_skey, rxk5->flags);
-
- /* extract the permitted client addresses */
- ret = rxrpc_krb5_decode_tagged_array(&rxk5->addresses,
- &rxk5->n_addresses,
- AFSTOKEN_K5_ADDRESSES_MAX,
- AFSTOKEN_DATA_MAX,
- &xdr, &toklen);
- if (ret < 0)
- goto error;
-
- ASSERTCMP((end_xdr - xdr) << 2, ==, toklen);
-
- /* extract the tickets */
- ret = rxrpc_krb5_decode_ticket(&rxk5->ticket, &rxk5->ticket_len,
- &xdr, &toklen);
- if (ret < 0)
- goto error;
- ret = rxrpc_krb5_decode_ticket(&rxk5->ticket2, &rxk5->ticket2_len,
- &xdr, &toklen);
- if (ret < 0)
- goto error;
-
- ASSERTCMP((end_xdr - xdr) << 2, ==, toklen);
-
- /* extract the typed auth data */
- ret = rxrpc_krb5_decode_tagged_array(&rxk5->authdata,
- &rxk5->n_authdata,
- AFSTOKEN_K5_AUTHDATA_MAX,
- AFSTOKEN_BDATALN_MAX,
- &xdr, &toklen);
- if (ret < 0)
- goto error;
-
- ASSERTCMP((end_xdr - xdr) << 2, ==, toklen);
-
- if (toklen != 0)
- goto inval;
-
- /* attach the payload */
- for (pptoken = (struct rxrpc_key_token **)&prep->payload.data[0];
- *pptoken;
- pptoken = &(*pptoken)->next)
- continue;
- *pptoken = token;
- expiry = rxrpc_u32_to_time64(token->k5->endtime);
- if (expiry < prep->expiry)
- prep->expiry = expiry;
-
- _leave(" = 0");
- return 0;
-
-inval:
- ret = -EINVAL;
-error:
- rxrpc_rxk5_free(rxk5);
- kfree(token);
- _leave(" = %d", ret);
- return ret;
-}
-
/*
* attempt to parse the data as the XDR format
* - the caller guarantees we have more than 7 words
@@ -650,12 +265,6 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
goto error;
break;
- case RXRPC_SECURITY_RXK5:
- ret = rxrpc_preparse_xdr_rxk5(prep, datalen, xdr, toklen);
- if (ret != 0)
- goto error;
- break;
-
default:
ret = -EPROTONOSUPPORT;
goto error;
@@ -805,10 +414,6 @@ static void rxrpc_free_token_list(struct rxrpc_key_token *token)
case RXRPC_SECURITY_RXKAD:
kfree(token->kad);
break;
- case RXRPC_SECURITY_RXK5:
- if (token->k5)
- rxrpc_rxk5_free(token->k5);
- break;
default:
pr_err("Unknown token type %x on rxrpc key\n",
token->security_index);
@@ -1044,12 +649,10 @@ static long rxrpc_read(const struct key *key,
char *buffer, size_t buflen)
{
const struct rxrpc_key_token *token;
- const struct krb5_principal *princ;
size_t size;
__be32 *xdr, *oldxdr;
u32 cnlen, toksize, ntoks, tok, zero;
u16 toksizes[AFSTOKEN_MAX];
- int loop;
_enter("");
@@ -1077,35 +680,6 @@ static long rxrpc_read(const struct key *key,
toksize += RND(token->kad->ticket_len);
break;
- case RXRPC_SECURITY_RXK5:
- princ = &token->k5->client;
- toksize += 4 + princ->n_name_parts * 4;
- for (loop = 0; loop < princ->n_name_parts; loop++)
- toksize += RND(strlen(princ->name_parts[loop]));
- toksize += 4 + RND(strlen(princ->realm));
-
- princ = &token->k5->server;
- toksize += 4 + princ->n_name_parts * 4;
- for (loop = 0; loop < princ->n_name_parts; loop++)
- toksize += RND(strlen(princ->name_parts[loop]));
- toksize += 4 + RND(strlen(princ->realm));
-
- toksize += 8 + RND(token->k5->session.data_len);
-
- toksize += 4 * 8 + 2 * 4;
-
- toksize += 4 + token->k5->n_addresses * 8;
- for (loop = 0; loop < token->k5->n_addresses; loop++)
- toksize += RND(token->k5->addresses[loop].data_len);
-
- toksize += 4 + RND(token->k5->ticket_len);
- toksize += 4 + RND(token->k5->ticket2_len);
-
- toksize += 4 + token->k5->n_authdata * 8;
- for (loop = 0; loop < token->k5->n_authdata; loop++)
- toksize += RND(token->k5->authdata[loop].data_len);
- break;
-
default: /* we have a ticket we can't encode */
pr_err("Unsupported key token type (%u)\n",
token->security_index);
@@ -1181,48 +755,6 @@ static long rxrpc_read(const struct key *key,
ENCODE_DATA(token->kad->ticket_len, token->kad->ticket);
break;
- case RXRPC_SECURITY_RXK5:
- princ = &token->k5->client;
- ENCODE(princ->n_name_parts);
- for (loop = 0; loop < princ->n_name_parts; loop++)
- ENCODE_STR(princ->name_parts[loop]);
- ENCODE_STR(princ->realm);
-
- princ = &token->k5->server;
- ENCODE(princ->n_name_parts);
- for (loop = 0; loop < princ->n_name_parts; loop++)
- ENCODE_STR(princ->name_parts[loop]);
- ENCODE_STR(princ->realm);
-
- ENCODE(token->k5->session.tag);
- ENCODE_DATA(token->k5->session.data_len,
- token->k5->session.data);
-
- ENCODE64(token->k5->authtime);
- ENCODE64(token->k5->starttime);
- ENCODE64(token->k5->endtime);
- ENCODE64(token->k5->renew_till);
- ENCODE(token->k5->is_skey);
- ENCODE(token->k5->flags);
-
- ENCODE(token->k5->n_addresses);
- for (loop = 0; loop < token->k5->n_addresses; loop++) {
- ENCODE(token->k5->addresses[loop].tag);
- ENCODE_DATA(token->k5->addresses[loop].data_len,
- token->k5->addresses[loop].data);
- }
-
- ENCODE_DATA(token->k5->ticket_len, token->k5->ticket);
- ENCODE_DATA(token->k5->ticket2_len, token->k5->ticket2);
-
- ENCODE(token->k5->n_authdata);
- for (loop = 0; loop < token->k5->n_authdata; loop++) {
- ENCODE(token->k5->authdata[loop].tag);
- ENCODE_DATA(token->k5->authdata[loop].data_len,
- token->k5->authdata[loop].data);
- }
- break;
-
default:
break;
}