diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/cifs/cifsencrypt.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/cifs/cifsencrypt.c | 754 |
1 files changed, 0 insertions, 754 deletions
diff --git a/ANDROID_3.4.5/fs/cifs/cifsencrypt.c b/ANDROID_3.4.5/fs/cifs/cifsencrypt.c deleted file mode 100644 index 63c460e5..00000000 --- a/ANDROID_3.4.5/fs/cifs/cifsencrypt.c +++ /dev/null @@ -1,754 +0,0 @@ -/* - * fs/cifs/cifsencrypt.c - * - * Copyright (C) International Business Machines Corp., 2005,2006 - * Author(s): Steve French (sfrench@us.ibm.com) - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published - * by the Free Software Foundation; either version 2.1 of the License, or - * (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/fs.h> -#include <linux/slab.h> -#include "cifspdu.h" -#include "cifsglob.h" -#include "cifs_debug.h" -#include "cifs_unicode.h" -#include "cifsproto.h" -#include "ntlmssp.h" -#include <linux/ctype.h> -#include <linux/random.h> - -/* - * Calculate and return the CIFS signature based on the mac key and SMB PDU. - * The 16 byte signature must be allocated by the caller. Note we only use the - * 1st eight bytes and that the smb header signature field on input contains - * the sequence number before this function is called. Also, this function - * should be called with the server->srv_mutex held. - */ -static int cifs_calc_signature(const struct kvec *iov, int n_vec, - struct TCP_Server_Info *server, char *signature) -{ - int i; - int rc; - - if (iov == NULL || signature == NULL || server == NULL) - return -EINVAL; - - if (!server->secmech.sdescmd5) { - cERROR(1, "%s: Can't generate signature\n", __func__); - return -1; - } - - rc = crypto_shash_init(&server->secmech.sdescmd5->shash); - if (rc) { - cERROR(1, "%s: Could not init md5\n", __func__); - return rc; - } - - rc = crypto_shash_update(&server->secmech.sdescmd5->shash, - server->session_key.response, server->session_key.len); - if (rc) { - cERROR(1, "%s: Could not update with response\n", __func__); - return rc; - } - - for (i = 0; i < n_vec; i++) { - if (iov[i].iov_len == 0) - continue; - if (iov[i].iov_base == NULL) { - cERROR(1, "null iovec entry"); - return -EIO; - } - /* The first entry includes a length field (which does not get - signed that occupies the first 4 bytes before the header */ - if (i == 0) { - if (iov[0].iov_len <= 8) /* cmd field at offset 9 */ - break; /* nothing to sign or corrupt header */ - rc = - crypto_shash_update(&server->secmech.sdescmd5->shash, - iov[i].iov_base + 4, iov[i].iov_len - 4); - } else { - rc = - crypto_shash_update(&server->secmech.sdescmd5->shash, - iov[i].iov_base, iov[i].iov_len); - } - if (rc) { - cERROR(1, "%s: Could not update with payload\n", - __func__); - return rc; - } - } - - rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature); - if (rc) - cERROR(1, "%s: Could not generate md5 hash\n", __func__); - - return rc; -} - -/* must be called with server->srv_mutex held */ -int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server, - __u32 *pexpected_response_sequence_number) -{ - int rc = 0; - char smb_signature[20]; - struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base; - - if ((cifs_pdu == NULL) || (server == NULL)) - return -EINVAL; - - if (!(cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) || - server->tcpStatus == CifsNeedNegotiate) - return rc; - - if (!server->session_estab) { - memcpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8); - return rc; - } - - cifs_pdu->Signature.Sequence.SequenceNumber = - cpu_to_le32(server->sequence_number); - cifs_pdu->Signature.Sequence.Reserved = 0; - - *pexpected_response_sequence_number = server->sequence_number++; - server->sequence_number++; - - rc = cifs_calc_signature(iov, n_vec, server, smb_signature); - if (rc) - memset(cifs_pdu->Signature.SecuritySignature, 0, 8); - else - memcpy(cifs_pdu->Signature.SecuritySignature, smb_signature, 8); - - return rc; -} - -/* must be called with server->srv_mutex held */ -int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server, - __u32 *pexpected_response_sequence_number) -{ - struct kvec iov; - - iov.iov_base = cifs_pdu; - iov.iov_len = be32_to_cpu(cifs_pdu->smb_buf_length) + 4; - - return cifs_sign_smb2(&iov, 1, server, - pexpected_response_sequence_number); -} - -int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov, - struct TCP_Server_Info *server, - __u32 expected_sequence_number) -{ - unsigned int rc; - char server_response_sig[8]; - char what_we_think_sig_should_be[20]; - struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base; - - if (cifs_pdu == NULL || server == NULL) - return -EINVAL; - - if (!server->session_estab) - return 0; - - if (cifs_pdu->Command == SMB_COM_LOCKING_ANDX) { - struct smb_com_lock_req *pSMB = - (struct smb_com_lock_req *)cifs_pdu; - if (pSMB->LockType & LOCKING_ANDX_OPLOCK_RELEASE) - return 0; - } - - /* BB what if signatures are supposed to be on for session but - server does not send one? BB */ - - /* Do not need to verify session setups with signature "BSRSPYL " */ - if (memcmp(cifs_pdu->Signature.SecuritySignature, "BSRSPYL ", 8) == 0) - cFYI(1, "dummy signature received for smb command 0x%x", - cifs_pdu->Command); - - /* save off the origiginal signature so we can modify the smb and check - its signature against what the server sent */ - memcpy(server_response_sig, cifs_pdu->Signature.SecuritySignature, 8); - - cifs_pdu->Signature.Sequence.SequenceNumber = - cpu_to_le32(expected_sequence_number); - cifs_pdu->Signature.Sequence.Reserved = 0; - - mutex_lock(&server->srv_mutex); - rc = cifs_calc_signature(iov, nr_iov, server, - what_we_think_sig_should_be); - mutex_unlock(&server->srv_mutex); - - if (rc) - return rc; - -/* cifs_dump_mem("what we think it should be: ", - what_we_think_sig_should_be, 16); */ - - if (memcmp(server_response_sig, what_we_think_sig_should_be, 8)) - return -EACCES; - else - return 0; - -} - -/* first calculate 24 bytes ntlm response and then 16 byte session key */ -int setup_ntlm_response(struct cifs_ses *ses, const struct nls_table *nls_cp) -{ - int rc = 0; - unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE; - char temp_key[CIFS_SESS_KEY_SIZE]; - - if (!ses) - return -EINVAL; - - ses->auth_key.response = kmalloc(temp_len, GFP_KERNEL); - if (!ses->auth_key.response) { - cERROR(1, "NTLM can't allocate (%u bytes) memory", temp_len); - return -ENOMEM; - } - ses->auth_key.len = temp_len; - - rc = SMBNTencrypt(ses->password, ses->server->cryptkey, - ses->auth_key.response + CIFS_SESS_KEY_SIZE, nls_cp); - if (rc) { - cFYI(1, "%s Can't generate NTLM response, error: %d", - __func__, rc); - return rc; - } - - rc = E_md4hash(ses->password, temp_key, nls_cp); - if (rc) { - cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc); - return rc; - } - - rc = mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE); - if (rc) - cFYI(1, "%s Can't generate NTLM session key, error: %d", - __func__, rc); - - return rc; -} - -#ifdef CONFIG_CIFS_WEAK_PW_HASH -int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt, - char *lnm_session_key) -{ - int i; - int rc; - char password_with_pad[CIFS_ENCPWD_SIZE]; - - memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); - if (password) - strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE); - - if (!encrypt && global_secflags & CIFSSEC_MAY_PLNTXT) { - memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE); - memcpy(lnm_session_key, password_with_pad, - CIFS_ENCPWD_SIZE); - return 0; - } - - /* calculate old style session key */ - /* calling toupper is less broken than repeatedly - calling nls_toupper would be since that will never - work for UTF8, but neither handles multibyte code pages - but the only alternative would be converting to UCS-16 (Unicode) - (using a routine something like UniStrupr) then - uppercasing and then converting back from Unicode - which - would only worth doing it if we knew it were utf8. Basically - utf8 and other multibyte codepages each need their own strupper - function since a byte at a time will ont work. */ - - for (i = 0; i < CIFS_ENCPWD_SIZE; i++) - password_with_pad[i] = toupper(password_with_pad[i]); - - rc = SMBencrypt(password_with_pad, cryptkey, lnm_session_key); - - return rc; -} -#endif /* CIFS_WEAK_PW_HASH */ - -/* Build a proper attribute value/target info pairs blob. - * Fill in netbios and dns domain name and workstation name - * and client time (total five av pairs and + one end of fields indicator. - * Allocate domain name which gets freed when session struct is deallocated. - */ -static int -build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp) -{ - unsigned int dlen; - unsigned int size = 2 * sizeof(struct ntlmssp2_name); - char *defdmname = "WORKGROUP"; - unsigned char *blobptr; - struct ntlmssp2_name *attrptr; - - if (!ses->domainName) { - ses->domainName = kstrdup(defdmname, GFP_KERNEL); - if (!ses->domainName) - return -ENOMEM; - } - - dlen = strlen(ses->domainName); - - /* - * The length of this blob is two times the size of a - * structure (av pair) which holds name/size - * ( for NTLMSSP_AV_NB_DOMAIN_NAME followed by NTLMSSP_AV_EOL ) + - * unicode length of a netbios domain name - */ - ses->auth_key.len = size + 2 * dlen; - ses->auth_key.response = kzalloc(ses->auth_key.len, GFP_KERNEL); - if (!ses->auth_key.response) { - ses->auth_key.len = 0; - cERROR(1, "Challenge target info allocation failure"); - return -ENOMEM; - } - - blobptr = ses->auth_key.response; - attrptr = (struct ntlmssp2_name *) blobptr; - - /* - * As defined in MS-NTLM 3.3.2, just this av pair field - * is sufficient as part of the temp - */ - attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME); - attrptr->length = cpu_to_le16(2 * dlen); - blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name); - cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp); - - return 0; -} - -/* Server has provided av pairs/target info in the type 2 challenge - * packet and we have plucked it and stored within smb session. - * We parse that blob here to find netbios domain name to be used - * as part of ntlmv2 authentication (in Target String), if not already - * specified on the command line. - * If this function returns without any error but without fetching - * domain name, authentication may fail against some server but - * may not fail against other (those who are not very particular - * about target string i.e. for some, just user name might suffice. - */ -static int -find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp) -{ - unsigned int attrsize; - unsigned int type; - unsigned int onesize = sizeof(struct ntlmssp2_name); - unsigned char *blobptr; - unsigned char *blobend; - struct ntlmssp2_name *attrptr; - - if (!ses->auth_key.len || !ses->auth_key.response) - return 0; - - blobptr = ses->auth_key.response; - blobend = blobptr + ses->auth_key.len; - - while (blobptr + onesize < blobend) { - attrptr = (struct ntlmssp2_name *) blobptr; - type = le16_to_cpu(attrptr->type); - if (type == NTLMSSP_AV_EOL) - break; - blobptr += 2; /* advance attr type */ - attrsize = le16_to_cpu(attrptr->length); - blobptr += 2; /* advance attr size */ - if (blobptr + attrsize > blobend) - break; - if (type == NTLMSSP_AV_NB_DOMAIN_NAME) { - if (!attrsize) - break; - if (!ses->domainName) { - ses->domainName = - kmalloc(attrsize + 1, GFP_KERNEL); - if (!ses->domainName) - return -ENOMEM; - cifs_from_utf16(ses->domainName, - (__le16 *)blobptr, attrsize, attrsize, - nls_cp, false); - break; - } - } - blobptr += attrsize; /* advance attr value */ - } - - return 0; -} - -static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, - const struct nls_table *nls_cp) -{ - int rc = 0; - int len; - char nt_hash[CIFS_NTHASH_SIZE]; - wchar_t *user; - wchar_t *domain; - wchar_t *server; - - if (!ses->server->secmech.sdeschmacmd5) { - cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n"); - return -1; - } - - /* calculate md4 hash of password */ - E_md4hash(ses->password, nt_hash, nls_cp); - - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash, - CIFS_NTHASH_SIZE); - if (rc) { - cERROR(1, "%s: Could not set NT Hash as a key", __func__); - return rc; - } - - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); - if (rc) { - cERROR(1, "calc_ntlmv2_hash: could not init hmacmd5\n"); - return rc; - } - - /* convert ses->user_name to unicode and uppercase */ - len = ses->user_name ? strlen(ses->user_name) : 0; - user = kmalloc(2 + (len * 2), GFP_KERNEL); - if (user == NULL) { - cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n"); - rc = -ENOMEM; - return rc; - } - - if (len) { - len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp); - UniStrupr(user); - } else { - memset(user, '\0', 2); - } - - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, - (char *)user, 2 * len); - kfree(user); - if (rc) { - cERROR(1, "%s: Could not update with user\n", __func__); - return rc; - } - - /* convert ses->domainName to unicode and uppercase */ - if (ses->domainName) { - len = strlen(ses->domainName); - - domain = kmalloc(2 + (len * 2), GFP_KERNEL); - if (domain == NULL) { - cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure"); - rc = -ENOMEM; - return rc; - } - len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len, - nls_cp); - rc = - crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, - (char *)domain, 2 * len); - kfree(domain); - if (rc) { - cERROR(1, "%s: Could not update with domain\n", - __func__); - return rc; - } - } else if (ses->serverName) { - len = strlen(ses->serverName); - - server = kmalloc(2 + (len * 2), GFP_KERNEL); - if (server == NULL) { - cERROR(1, "calc_ntlmv2_hash: server mem alloc failure"); - rc = -ENOMEM; - return rc; - } - len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len, - nls_cp); - rc = - crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, - (char *)server, 2 * len); - kfree(server); - if (rc) { - cERROR(1, "%s: Could not update with server\n", - __func__); - return rc; - } - } - - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, - ntlmv2_hash); - if (rc) - cERROR(1, "%s: Could not generate md5 hash\n", __func__); - - return rc; -} - -static int -CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) -{ - int rc; - unsigned int offset = CIFS_SESS_KEY_SIZE + 8; - - if (!ses->server->secmech.sdeschmacmd5) { - cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n"); - return -1; - } - - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, - ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); - if (rc) { - cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__); - return rc; - } - - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); - if (rc) { - cERROR(1, "CalcNTLMv2_response: could not init hmacmd5"); - return rc; - } - - if (ses->server->secType == RawNTLMSSP) - memcpy(ses->auth_key.response + offset, - ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE); - else - memcpy(ses->auth_key.response + offset, - ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE); - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, - ses->auth_key.response + offset, ses->auth_key.len - offset); - if (rc) { - cERROR(1, "%s: Could not update with response\n", __func__); - return rc; - } - - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, - ses->auth_key.response + CIFS_SESS_KEY_SIZE); - if (rc) - cERROR(1, "%s: Could not generate md5 hash\n", __func__); - - return rc; -} - - -int -setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) -{ - int rc; - int baselen; - unsigned int tilen; - struct ntlmv2_resp *buf; - char ntlmv2_hash[16]; - unsigned char *tiblob = NULL; /* target info blob */ - - if (ses->server->secType == RawNTLMSSP) { - if (!ses->domainName) { - rc = find_domain_name(ses, nls_cp); - if (rc) { - cERROR(1, "error %d finding domain name", rc); - goto setup_ntlmv2_rsp_ret; - } - } - } else { - rc = build_avpair_blob(ses, nls_cp); - if (rc) { - cERROR(1, "error %d building av pair blob", rc); - goto setup_ntlmv2_rsp_ret; - } - } - - baselen = CIFS_SESS_KEY_SIZE + sizeof(struct ntlmv2_resp); - tilen = ses->auth_key.len; - tiblob = ses->auth_key.response; - - ses->auth_key.response = kmalloc(baselen + tilen, GFP_KERNEL); - if (!ses->auth_key.response) { - rc = ENOMEM; - ses->auth_key.len = 0; - cERROR(1, "%s: Can't allocate auth blob", __func__); - goto setup_ntlmv2_rsp_ret; - } - ses->auth_key.len += baselen; - - buf = (struct ntlmv2_resp *) - (ses->auth_key.response + CIFS_SESS_KEY_SIZE); - buf->blob_signature = cpu_to_le32(0x00000101); - buf->reserved = 0; - buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); - get_random_bytes(&buf->client_chal, sizeof(buf->client_chal)); - buf->reserved2 = 0; - - memcpy(ses->auth_key.response + baselen, tiblob, tilen); - - /* calculate ntlmv2_hash */ - rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp); - if (rc) { - cERROR(1, "could not get v2 hash rc %d", rc); - goto setup_ntlmv2_rsp_ret; - } - - /* calculate first part of the client response (CR1) */ - rc = CalcNTLMv2_response(ses, ntlmv2_hash); - if (rc) { - cERROR(1, "Could not calculate CR1 rc: %d", rc); - goto setup_ntlmv2_rsp_ret; - } - - /* now calculate the session key for NTLMv2 */ - rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, - ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); - if (rc) { - cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__); - goto setup_ntlmv2_rsp_ret; - } - - rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); - if (rc) { - cERROR(1, "%s: Could not init hmacmd5\n", __func__); - goto setup_ntlmv2_rsp_ret; - } - - rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, - ses->auth_key.response + CIFS_SESS_KEY_SIZE, - CIFS_HMAC_MD5_HASH_SIZE); - if (rc) { - cERROR(1, "%s: Could not update with response\n", __func__); - goto setup_ntlmv2_rsp_ret; - } - - rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, - ses->auth_key.response); - if (rc) - cERROR(1, "%s: Could not generate md5 hash\n", __func__); - -setup_ntlmv2_rsp_ret: - kfree(tiblob); - - return rc; -} - -int -calc_seckey(struct cifs_ses *ses) -{ - int rc; - struct crypto_blkcipher *tfm_arc4; - struct scatterlist sgin, sgout; - struct blkcipher_desc desc; - unsigned char sec_key[CIFS_SESS_KEY_SIZE]; /* a nonce */ - - get_random_bytes(sec_key, CIFS_SESS_KEY_SIZE); - - tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); - if (IS_ERR(tfm_arc4)) { - rc = PTR_ERR(tfm_arc4); - cERROR(1, "could not allocate crypto API arc4\n"); - return rc; - } - - desc.tfm = tfm_arc4; - - rc = crypto_blkcipher_setkey(tfm_arc4, ses->auth_key.response, - CIFS_SESS_KEY_SIZE); - if (rc) { - cERROR(1, "%s: Could not set response as a key", __func__); - return rc; - } - - sg_init_one(&sgin, sec_key, CIFS_SESS_KEY_SIZE); - sg_init_one(&sgout, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE); - - rc = crypto_blkcipher_encrypt(&desc, &sgout, &sgin, CIFS_CPHTXT_SIZE); - if (rc) { - cERROR(1, "could not encrypt session key rc: %d\n", rc); - crypto_free_blkcipher(tfm_arc4); - return rc; - } - - /* make secondary_key/nonce as session key */ - memcpy(ses->auth_key.response, sec_key, CIFS_SESS_KEY_SIZE); - /* and make len as that of session key only */ - ses->auth_key.len = CIFS_SESS_KEY_SIZE; - - crypto_free_blkcipher(tfm_arc4); - - return rc; -} - -void -cifs_crypto_shash_release(struct TCP_Server_Info *server) -{ - if (server->secmech.md5) - crypto_free_shash(server->secmech.md5); - - if (server->secmech.hmacmd5) - crypto_free_shash(server->secmech.hmacmd5); - - kfree(server->secmech.sdeschmacmd5); - - kfree(server->secmech.sdescmd5); -} - -int -cifs_crypto_shash_allocate(struct TCP_Server_Info *server) -{ - int rc; - unsigned int size; - - server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0); - if (IS_ERR(server->secmech.hmacmd5)) { - cERROR(1, "could not allocate crypto hmacmd5\n"); - return PTR_ERR(server->secmech.hmacmd5); - } - - server->secmech.md5 = crypto_alloc_shash("md5", 0, 0); - if (IS_ERR(server->secmech.md5)) { - cERROR(1, "could not allocate crypto md5\n"); - rc = PTR_ERR(server->secmech.md5); - goto crypto_allocate_md5_fail; - } - - size = sizeof(struct shash_desc) + - crypto_shash_descsize(server->secmech.hmacmd5); - server->secmech.sdeschmacmd5 = kmalloc(size, GFP_KERNEL); - if (!server->secmech.sdeschmacmd5) { - cERROR(1, "cifs_crypto_shash_allocate: can't alloc hmacmd5\n"); - rc = -ENOMEM; - goto crypto_allocate_hmacmd5_sdesc_fail; - } - server->secmech.sdeschmacmd5->shash.tfm = server->secmech.hmacmd5; - server->secmech.sdeschmacmd5->shash.flags = 0x0; - - - size = sizeof(struct shash_desc) + - crypto_shash_descsize(server->secmech.md5); - server->secmech.sdescmd5 = kmalloc(size, GFP_KERNEL); - if (!server->secmech.sdescmd5) { - cERROR(1, "cifs_crypto_shash_allocate: can't alloc md5\n"); - rc = -ENOMEM; - goto crypto_allocate_md5_sdesc_fail; - } - server->secmech.sdescmd5->shash.tfm = server->secmech.md5; - server->secmech.sdescmd5->shash.flags = 0x0; - - return 0; - -crypto_allocate_md5_sdesc_fail: - kfree(server->secmech.sdeschmacmd5); - -crypto_allocate_hmacmd5_sdesc_fail: - crypto_free_shash(server->secmech.md5); - -crypto_allocate_md5_fail: - crypto_free_shash(server->secmech.hmacmd5); - - return rc; -} |