diff options
Diffstat (limited to 'net/sunrpc/auth_gss')
| -rw-r--r-- | net/sunrpc/auth_gss/Makefile | 2 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/auth_gss.c | 4 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/auth_gss_internal.h | 6 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_generic_token.c | 231 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_crypto.c | 199 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_internal.h | 14 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_keys.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_test.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_mech_switch.c | 1 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 12 |
10 files changed, 13 insertions, 460 deletions
diff --git a/net/sunrpc/auth_gss/Makefile b/net/sunrpc/auth_gss/Makefile index ad1736d93b76..452f67deebc6 100644 --- a/net/sunrpc/auth_gss/Makefile +++ b/net/sunrpc/auth_gss/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_SUNRPC_GSS) += auth_rpcgss.o -auth_rpcgss-y := auth_gss.o gss_generic_token.o \ +auth_rpcgss-y := auth_gss.o \ gss_mech_switch.o svcauth_gss.o \ gss_rpc_upcall.o gss_rpc_xdr.o trace.o diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index c7af0220f82f..369310909fc9 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1875,8 +1875,10 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; maj_stat = gss_wrap(ctx->gc_gss_ctx, offset, snd_buf, inpages); /* slack space should prevent this ever happening: */ - if (unlikely(snd_buf->len > snd_buf->buflen)) + if (unlikely(snd_buf->len > snd_buf->buflen)) { + status = -EIO; goto wrap_failed; + } /* We're assuming that when GSS_S_CONTEXT_EXPIRED, the encryption was * done anyway, so it's safe to put the request on the wire: */ if (maj_stat == GSS_S_CONTEXT_EXPIRED) diff --git a/net/sunrpc/auth_gss/auth_gss_internal.h b/net/sunrpc/auth_gss/auth_gss_internal.h index c53b329092d4..4ebc1b7043d9 100644 --- a/net/sunrpc/auth_gss/auth_gss_internal.h +++ b/net/sunrpc/auth_gss/auth_gss_internal.h @@ -23,7 +23,7 @@ simple_get_bytes(const void *p, const void *end, void *res, size_t len) } static inline const void * -simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) +simple_get_netobj_noprof(const void *p, const void *end, struct xdr_netobj *dest) { const void *q; unsigned int len; @@ -35,7 +35,7 @@ simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) if (unlikely(q > end || q < p)) return ERR_PTR(-EFAULT); if (len) { - dest->data = kmemdup(p, len, GFP_KERNEL); + dest->data = kmemdup_noprof(p, len, GFP_KERNEL); if (unlikely(dest->data == NULL)) return ERR_PTR(-ENOMEM); } else @@ -43,3 +43,5 @@ simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) dest->len = len; return q; } + +#define simple_get_netobj(...) alloc_hooks(simple_get_netobj_noprof(__VA_ARGS__)) diff --git a/net/sunrpc/auth_gss/gss_generic_token.c b/net/sunrpc/auth_gss/gss_generic_token.c deleted file mode 100644 index 4a4082bb22ad..000000000000 --- a/net/sunrpc/auth_gss/gss_generic_token.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * linux/net/sunrpc/gss_generic_token.c - * - * Adapted from MIT Kerberos 5-1.2.1 lib/gssapi/generic/util_token.c - * - * Copyright (c) 2000 The Regents of the University of Michigan. - * All rights reserved. - * - * Andy Adamson <andros@umich.edu> - */ - -/* - * Copyright 1993 by OpenVision Technologies, Inc. - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without fee, - * provided that the above copyright notice appears in all copies and - * that both that copyright notice and this permission notice appear in - * supporting documentation, and that the name of OpenVision not be used - * in advertising or publicity pertaining to distribution of the software - * without specific, written prior permission. OpenVision makes no - * representations about the suitability of this software for any - * purpose. It is provided "as is" without express or implied warranty. - * - * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF - * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR - * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -#include <linux/types.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/sunrpc/sched.h> -#include <linux/sunrpc/gss_asn1.h> - - -#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) -# define RPCDBG_FACILITY RPCDBG_AUTH -#endif - - -/* TWRITE_STR from gssapiP_generic.h */ -#define TWRITE_STR(ptr, str, len) \ - memcpy((ptr), (char *) (str), (len)); \ - (ptr) += (len); - -/* XXXX this code currently makes the assumption that a mech oid will - never be longer than 127 bytes. This assumption is not inherent in - the interfaces, so the code can be fixed if the OSI namespace - balloons unexpectedly. */ - -/* Each token looks like this: - -0x60 tag for APPLICATION 0, SEQUENCE - (constructed, definite-length) - <length> possible multiple bytes, need to parse/generate - 0x06 tag for OBJECT IDENTIFIER - <moid_length> compile-time constant string (assume 1 byte) - <moid_bytes> compile-time constant string - <inner_bytes> the ANY containing the application token - bytes 0,1 are the token type - bytes 2,n are the token data - -For the purposes of this abstraction, the token "header" consists of -the sequence tag and length octets, the mech OID DER encoding, and the -first two inner bytes, which indicate the token type. The token -"body" consists of everything else. - -*/ - -static int -der_length_size( int length) -{ - if (length < (1<<7)) - return 1; - else if (length < (1<<8)) - return 2; -#if (SIZEOF_INT == 2) - else - return 3; -#else - else if (length < (1<<16)) - return 3; - else if (length < (1<<24)) - return 4; - else - return 5; -#endif -} - -static void -der_write_length(unsigned char **buf, int length) -{ - if (length < (1<<7)) { - *(*buf)++ = (unsigned char) length; - } else { - *(*buf)++ = (unsigned char) (der_length_size(length)+127); -#if (SIZEOF_INT > 2) - if (length >= (1<<24)) - *(*buf)++ = (unsigned char) (length>>24); - if (length >= (1<<16)) - *(*buf)++ = (unsigned char) ((length>>16)&0xff); -#endif - if (length >= (1<<8)) - *(*buf)++ = (unsigned char) ((length>>8)&0xff); - *(*buf)++ = (unsigned char) (length&0xff); - } -} - -/* returns decoded length, or < 0 on failure. Advances buf and - decrements bufsize */ - -static int -der_read_length(unsigned char **buf, int *bufsize) -{ - unsigned char sf; - int ret; - - if (*bufsize < 1) - return -1; - sf = *(*buf)++; - (*bufsize)--; - if (sf & 0x80) { - if ((sf &= 0x7f) > ((*bufsize)-1)) - return -1; - if (sf > SIZEOF_INT) - return -1; - ret = 0; - for (; sf; sf--) { - ret = (ret<<8) + (*(*buf)++); - (*bufsize)--; - } - } else { - ret = sf; - } - - return ret; -} - -/* returns the length of a token, given the mech oid and the body size */ - -int -g_token_size(struct xdr_netobj *mech, unsigned int body_size) -{ - /* set body_size to sequence contents size */ - body_size += 2 + (int) mech->len; /* NEED overflow check */ - return 1 + der_length_size(body_size) + body_size; -} - -EXPORT_SYMBOL_GPL(g_token_size); - -/* fills in a buffer with the token header. The buffer is assumed to - be the right size. buf is advanced past the token header */ - -void -g_make_token_header(struct xdr_netobj *mech, int body_size, unsigned char **buf) -{ - *(*buf)++ = 0x60; - der_write_length(buf, 2 + mech->len + body_size); - *(*buf)++ = 0x06; - *(*buf)++ = (unsigned char) mech->len; - TWRITE_STR(*buf, mech->data, ((int) mech->len)); -} - -EXPORT_SYMBOL_GPL(g_make_token_header); - -/* - * Given a buffer containing a token, reads and verifies the token, - * leaving buf advanced past the token header, and setting body_size - * to the number of remaining bytes. Returns 0 on success, - * G_BAD_TOK_HEADER for a variety of errors, and G_WRONG_MECH if the - * mechanism in the token does not match the mech argument. buf and - * *body_size are left unmodified on error. - */ -u32 -g_verify_token_header(struct xdr_netobj *mech, int *body_size, - unsigned char **buf_in, int toksize) -{ - unsigned char *buf = *buf_in; - int seqsize; - struct xdr_netobj toid; - int ret = 0; - - if ((toksize-=1) < 0) - return G_BAD_TOK_HEADER; - if (*buf++ != 0x60) - return G_BAD_TOK_HEADER; - - if ((seqsize = der_read_length(&buf, &toksize)) < 0) - return G_BAD_TOK_HEADER; - - if (seqsize != toksize) - return G_BAD_TOK_HEADER; - - if ((toksize-=1) < 0) - return G_BAD_TOK_HEADER; - if (*buf++ != 0x06) - return G_BAD_TOK_HEADER; - - if ((toksize-=1) < 0) - return G_BAD_TOK_HEADER; - toid.len = *buf++; - - if ((toksize-=toid.len) < 0) - return G_BAD_TOK_HEADER; - toid.data = buf; - buf+=toid.len; - - if (! g_OID_equal(&toid, mech)) - ret = G_WRONG_MECH; - - /* G_WRONG_MECH is not returned immediately because it's more important - to return G_BAD_TOK_HEADER if the token header is in fact bad */ - - if ((toksize-=2) < 0) - return G_BAD_TOK_HEADER; - - if (ret) - return ret; - - *buf_in = buf; - *body_size = toksize; - - return ret; -} - -EXPORT_SYMBOL_GPL(g_verify_token_header); diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c index d2b02710ab07..8f2d65c1e831 100644 --- a/net/sunrpc/auth_gss/gss_krb5_crypto.c +++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c @@ -138,60 +138,6 @@ out: return ret; } -/** - * krb5_decrypt - simple decryption of an RPCSEC GSS payload - * @tfm: initialized cipher transform - * @iv: pointer to an IV - * @in: ciphertext to decrypt - * @out: OUT: plaintext - * @length: length of input and output buffers, in bytes - * - * @iv may be NULL to force the use of an all-zero IV. - * The buffer containing the IV must be as large as the - * cipher's ivsize. - * - * Return values: - * %0: @in successfully decrypted into @out - * negative errno: @in not decrypted - */ -u32 -krb5_decrypt( - struct crypto_sync_skcipher *tfm, - void * iv, - void * in, - void * out, - int length) -{ - u32 ret = -EINVAL; - struct scatterlist sg[1]; - u8 local_iv[GSS_KRB5_MAX_BLOCKSIZE] = {0}; - SYNC_SKCIPHER_REQUEST_ON_STACK(req, tfm); - - if (length % crypto_sync_skcipher_blocksize(tfm) != 0) - goto out; - - if (crypto_sync_skcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) { - dprintk("RPC: gss_k5decrypt: tfm iv size too large %d\n", - crypto_sync_skcipher_ivsize(tfm)); - goto out; - } - if (iv) - memcpy(local_iv, iv, crypto_sync_skcipher_ivsize(tfm)); - - memcpy(out, in, length); - sg_init_one(sg, out, length); - - skcipher_request_set_sync_tfm(req, tfm); - skcipher_request_set_callback(req, 0, NULL, NULL); - skcipher_request_set_crypt(req, sg, sg, length, local_iv); - - ret = crypto_skcipher_decrypt(req); - skcipher_request_zero(req); -out: - dprintk("RPC: gss_k5decrypt returns %d\n",ret); - return ret; -} - static int checksummer(struct scatterlist *sg, void *data) { @@ -202,96 +148,6 @@ checksummer(struct scatterlist *sg, void *data) return crypto_ahash_update(req); } -/* - * checksum the plaintext data and hdrlen bytes of the token header - * The checksum is performed over the first 8 bytes of the - * gss token header and then over the data body - */ -u32 -make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen, - struct xdr_buf *body, int body_offset, u8 *cksumkey, - unsigned int usage, struct xdr_netobj *cksumout) -{ - struct crypto_ahash *tfm; - struct ahash_request *req; - struct scatterlist sg[1]; - int err = -1; - u8 *checksumdata; - unsigned int checksumlen; - - if (cksumout->len < kctx->gk5e->cksumlength) { - dprintk("%s: checksum buffer length, %u, too small for %s\n", - __func__, cksumout->len, kctx->gk5e->name); - return GSS_S_FAILURE; - } - - checksumdata = kmalloc(GSS_KRB5_MAX_CKSUM_LEN, GFP_KERNEL); - if (checksumdata == NULL) - return GSS_S_FAILURE; - - tfm = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC); - if (IS_ERR(tfm)) - goto out_free_cksum; - - req = ahash_request_alloc(tfm, GFP_KERNEL); - if (!req) - goto out_free_ahash; - - ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL); - - checksumlen = crypto_ahash_digestsize(tfm); - - if (cksumkey != NULL) { - err = crypto_ahash_setkey(tfm, cksumkey, - kctx->gk5e->keylength); - if (err) - goto out; - } - - err = crypto_ahash_init(req); - if (err) - goto out; - sg_init_one(sg, header, hdrlen); - ahash_request_set_crypt(req, sg, NULL, hdrlen); - err = crypto_ahash_update(req); - if (err) - goto out; - err = xdr_process_buf(body, body_offset, body->len - body_offset, - checksummer, req); - if (err) - goto out; - ahash_request_set_crypt(req, NULL, checksumdata, 0); - err = crypto_ahash_final(req); - if (err) - goto out; - - switch (kctx->gk5e->ctype) { - case CKSUMTYPE_RSA_MD5: - err = krb5_encrypt(kctx->seq, NULL, checksumdata, - checksumdata, checksumlen); - if (err) - goto out; - memcpy(cksumout->data, - checksumdata + checksumlen - kctx->gk5e->cksumlength, - kctx->gk5e->cksumlength); - break; - case CKSUMTYPE_HMAC_SHA1_DES3: - memcpy(cksumout->data, checksumdata, kctx->gk5e->cksumlength); - break; - default: - BUG(); - break; - } - cksumout->len = kctx->gk5e->cksumlength; -out: - ahash_request_free(req); -out_free_ahash: - crypto_free_ahash(tfm); -out_free_cksum: - kfree(checksumdata); - return err ? GSS_S_FAILURE : 0; -} - /** * gss_krb5_checksum - Compute the MAC for a GSS Wrap or MIC token * @tfm: an initialized hash transform @@ -442,35 +298,6 @@ encryptor(struct scatterlist *sg, void *data) return 0; } -int -gss_encrypt_xdr_buf(struct crypto_sync_skcipher *tfm, struct xdr_buf *buf, - int offset, struct page **pages) -{ - int ret; - struct encryptor_desc desc; - SYNC_SKCIPHER_REQUEST_ON_STACK(req, tfm); - - BUG_ON((buf->len - offset) % crypto_sync_skcipher_blocksize(tfm) != 0); - - skcipher_request_set_sync_tfm(req, tfm); - skcipher_request_set_callback(req, 0, NULL, NULL); - - memset(desc.iv, 0, sizeof(desc.iv)); - desc.req = req; - desc.pos = offset; - desc.outbuf = buf; - desc.pages = pages; - desc.fragno = 0; - desc.fraglen = 0; - - sg_init_table(desc.infrags, 4); - sg_init_table(desc.outfrags, 4); - - ret = xdr_process_buf(buf, offset, buf->len - offset, encryptor, &desc); - skcipher_request_zero(req); - return ret; -} - struct decryptor_desc { u8 iv[GSS_KRB5_MAX_BLOCKSIZE]; struct skcipher_request *req; @@ -525,32 +352,6 @@ decryptor(struct scatterlist *sg, void *data) return 0; } -int -gss_decrypt_xdr_buf(struct crypto_sync_skcipher *tfm, struct xdr_buf *buf, - int offset) -{ - int ret; - struct decryptor_desc desc; - SYNC_SKCIPHER_REQUEST_ON_STACK(req, tfm); - - /* XXXJBF: */ - BUG_ON((buf->len - offset) % crypto_sync_skcipher_blocksize(tfm) != 0); - - skcipher_request_set_sync_tfm(req, tfm); - skcipher_request_set_callback(req, 0, NULL, NULL); - - memset(desc.iv, 0, sizeof(desc.iv)); - desc.req = req; - desc.fragno = 0; - desc.fraglen = 0; - - sg_init_table(desc.frags, 4); - - ret = xdr_process_buf(buf, offset, buf->len - offset, decryptor, &desc); - skcipher_request_zero(req); - return ret; -} - /* * This function makes the assumption that it was ultimately called * from gss_wrap(). diff --git a/net/sunrpc/auth_gss/gss_krb5_internal.h b/net/sunrpc/auth_gss/gss_krb5_internal.h index 3afd4065bf3d..8769e9e705bf 100644 --- a/net/sunrpc/auth_gss/gss_krb5_internal.h +++ b/net/sunrpc/auth_gss/gss_krb5_internal.h @@ -155,10 +155,6 @@ static inline int krb5_derive_key(struct krb5_ctx *kctx, void krb5_make_confounder(u8 *p, int conflen); -u32 make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen, - struct xdr_buf *body, int body_offset, u8 *cksumkey, - unsigned int usage, struct xdr_netobj *cksumout); - u32 gss_krb5_checksum(struct crypto_ahash *tfm, char *header, int hdrlen, const struct xdr_buf *body, int body_offset, struct xdr_netobj *cksumout); @@ -166,19 +162,9 @@ u32 gss_krb5_checksum(struct crypto_ahash *tfm, char *header, int hdrlen, u32 krb5_encrypt(struct crypto_sync_skcipher *key, void *iv, void *in, void *out, int length); -u32 krb5_decrypt(struct crypto_sync_skcipher *key, void *iv, void *in, - void *out, int length); - int xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen); -int gss_encrypt_xdr_buf(struct crypto_sync_skcipher *tfm, - struct xdr_buf *outbuf, int offset, - struct page **pages); - -int gss_decrypt_xdr_buf(struct crypto_sync_skcipher *tfm, - struct xdr_buf *inbuf, int offset); - u32 gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset, struct xdr_buf *buf, struct page **pages); diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c index 06d8ee0db000..4eb19c3a54c7 100644 --- a/net/sunrpc/auth_gss/gss_krb5_keys.c +++ b/net/sunrpc/auth_gss/gss_krb5_keys.c @@ -168,7 +168,7 @@ static int krb5_DK(const struct gss_krb5_enctype *gk5e, goto err_return; blocksize = crypto_sync_skcipher_blocksize(cipher); if (crypto_sync_skcipher_setkey(cipher, inkey->data, inkey->len)) - goto err_return; + goto err_free_cipher; ret = -ENOMEM; inblockdata = kmalloc(blocksize, gfp_mask); diff --git a/net/sunrpc/auth_gss/gss_krb5_test.c b/net/sunrpc/auth_gss/gss_krb5_test.c index 85625e3f3814..a5bff02cd7ba 100644 --- a/net/sunrpc/auth_gss/gss_krb5_test.c +++ b/net/sunrpc/auth_gss/gss_krb5_test.c @@ -17,7 +17,7 @@ #include "gss_krb5_internal.h" -MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING); +MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING"); struct gss_krb5_test_param { const char *desc; diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c index fae632da1058..c84d0cf61980 100644 --- a/net/sunrpc/auth_gss/gss_mech_switch.c +++ b/net/sunrpc/auth_gss/gss_mech_switch.c @@ -13,7 +13,6 @@ #include <linux/module.h> #include <linux/oid_registry.h> #include <linux/sunrpc/msg_prot.h> -#include <linux/sunrpc/gss_asn1.h> #include <linux/sunrpc/auth_gss.h> #include <linux/sunrpc/svcauth_gss.h> #include <linux/sunrpc/gss_err.h> diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 24de94184700..73a90ad873fb 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1033,17 +1033,11 @@ null_verifier: static void gss_free_in_token_pages(struct gssp_in_token *in_token) { - u32 inlen; int i; i = 0; - inlen = in_token->page_len; - while (inlen) { - if (in_token->pages[i]) - put_page(in_token->pages[i]); - inlen -= inlen > PAGE_SIZE ? PAGE_SIZE : inlen; - } - + while (in_token->pages[i]) + put_page(in_token->pages[i++]); kfree(in_token->pages); in_token->pages = NULL; } @@ -1075,7 +1069,7 @@ static int gss_read_proxy_verf(struct svc_rqst *rqstp, goto out_denied_free; pages = DIV_ROUND_UP(inlen, PAGE_SIZE); - in_token->pages = kcalloc(pages, sizeof(struct page *), GFP_KERNEL); + in_token->pages = kcalloc(pages + 1, sizeof(struct page *), GFP_KERNEL); if (!in_token->pages) goto out_denied_free; in_token->page_base = 0; |