*
* SMB/CIFS session setup handling routines
*
- * Copyright (c) International Business Machines Corp., 2006
+ * Copyright (c) International Business Machines Corp., 2006, 2007
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
#include "cifs_debug.h"
#include "ntlmssp.h"
#include "nterr.h"
-#include <linux/ctype.h>
#include <linux/utsname.h>
-
-extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
- unsigned char *p24);
+#include "cifs_spnego.h"
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
- unsigned char *p24);
-
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+ unsigned char *p24);
static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
{
/* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
- /* BB verify whether signing required on neg or just on auth frame
+ /* BB verify whether signing required on neg or just on auth frame
(and NTLM case) */
capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
- if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ if (ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
if (ses->capabilities & CAP_UNICODE) {
pSMB->req.hdr.Flags2 |= SMBFLG2_DFS;
capabilities |= CAP_DFS;
}
- if (ses->capabilities & CAP_UNIX) {
+ if (ses->capabilities & CAP_UNIX)
capabilities |= CAP_UNIX;
- }
/* BB check whether to init vcnum BB */
return capabilities;
}
-void unicode_ssetup_strings(char ** pbcc_area, struct cifsSesInfo *ses,
- const struct nls_table * nls_cp)
+static void
+unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp)
+{
+ char *bcc_ptr = *pbcc_area;
+ int bytes_ret = 0;
+
+ /* Copy OS version */
+ bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
+ nls_cp);
+ bcc_ptr += 2 * bytes_ret;
+ bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release,
+ 32, nls_cp);
+ bcc_ptr += 2 * bytes_ret;
+ bcc_ptr += 2; /* trailing null */
+
+ bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
+ 32, nls_cp);
+ bcc_ptr += 2 * bytes_ret;
+ bcc_ptr += 2; /* trailing null */
+
+ *pbcc_area = bcc_ptr;
+}
+
+static void unicode_domain_string(char **pbcc_area, struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
+{
+ char *bcc_ptr = *pbcc_area;
+ int bytes_ret = 0;
+
+ /* copy domain */
+ if (ses->domainName == NULL) {
+ /* Sending null domain better than using a bogus domain name (as
+ we did briefly in 2.6.18) since server will use its default */
+ *bcc_ptr = 0;
+ *(bcc_ptr+1) = 0;
+ bytes_ret = 0;
+ } else
+ bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
+ 256, nls_cp);
+ bcc_ptr += 2 * bytes_ret;
+ bcc_ptr += 2; /* account for null terminator */
+
+ *pbcc_area = bcc_ptr;
+}
+
+
+static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
{
- char * bcc_ptr = *pbcc_area;
+ char *bcc_ptr = *pbcc_area;
int bytes_ret = 0;
/* BB FIXME add check that strings total less
than 335 or will need to send them as arrays */
- /* align unicode strings, must be word aligned */
- if ((long) bcc_ptr % 2) {
+ /* unicode strings, must be word aligned before the call */
+/* if ((long) bcc_ptr % 2) {
*bcc_ptr = 0;
bcc_ptr++;
- }
+ } */
/* copy user */
- if(ses->userName == NULL) {
- /* BB what about null user mounts - check that we do this BB */
+ if (ses->userName == NULL) {
+ /* null user mount */
+ *bcc_ptr = 0;
+ *(bcc_ptr+1) = 0;
} else { /* 300 should be long enough for any conceivable user name */
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
300, nls_cp);
}
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* account for null termination */
- /* copy domain */
- if(ses->domainName == NULL)
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr,
- "CIFS_LINUX_DOM", 32, nls_cp);
- else
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
- 256, nls_cp);
- bcc_ptr += 2 * bytes_ret;
- bcc_ptr += 2; /* account for null terminator */
-
- /* Copy OS version */
- bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
- nls_cp);
- bcc_ptr += 2 * bytes_ret;
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release,
- 32, nls_cp);
- bcc_ptr += 2 * bytes_ret;
- bcc_ptr += 2; /* trailing null */
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
- 32, nls_cp);
- bcc_ptr += 2 * bytes_ret;
- bcc_ptr += 2; /* trailing null */
+ unicode_domain_string(&bcc_ptr, ses, nls_cp);
+ unicode_oslm_strings(&bcc_ptr, nls_cp);
*pbcc_area = bcc_ptr;
}
-void ascii_ssetup_strings(char ** pbcc_area, struct cifsSesInfo *ses,
- const struct nls_table * nls_cp)
+static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
{
- char * bcc_ptr = *pbcc_area;
+ char *bcc_ptr = *pbcc_area;
/* copy user */
/* BB what about null user mounts - check that we do this BB */
- /* copy user */
- if(ses->userName == NULL) {
- /* BB what about null user mounts - check that we do this BB */
- } else { /* 300 should be long enough for any conceivable user name */
- strncpy(bcc_ptr, ses->userName, 300);
- }
+ /* copy user */
+ if (ses->userName == NULL) {
+ /* BB what about null user mounts - check that we do this BB */
+ } else { /* 300 should be long enough for any conceivable user name */
+ strncpy(bcc_ptr, ses->userName, 300);
+ }
/* BB improve check for overflow */
- bcc_ptr += strnlen(ses->userName, 200);
+ bcc_ptr += strnlen(ses->userName, 300);
*bcc_ptr = 0;
- bcc_ptr++; /* account for null termination */
-
- /* copy domain */
-
- if(ses->domainName == NULL) {
- strcpy(bcc_ptr, "CIFS_LINUX_DOM");
- bcc_ptr += 14; /* strlen(CIFS_LINUX_DOM) */
- } else {
- strncpy(bcc_ptr, ses->domainName, 256);
+ bcc_ptr++; /* account for null termination */
+
+ /* copy domain */
+
+ if (ses->domainName != NULL) {
+ strncpy(bcc_ptr, ses->domainName, 256);
bcc_ptr += strnlen(ses->domainName, 256);
- }
+ } /* else we will send a null domain name
+ so the server will default to its own domain */
*bcc_ptr = 0;
bcc_ptr++;
strcpy(bcc_ptr, "Linux version ");
bcc_ptr += strlen("Linux version ");
- strcpy(bcc_ptr, system_utsname.release);
- bcc_ptr += strlen(system_utsname.release) + 1;
+ strcpy(bcc_ptr, init_utsname()->release);
+ bcc_ptr += strlen(init_utsname()->release) + 1;
strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
- *pbcc_area = bcc_ptr;
+ *pbcc_area = bcc_ptr;
}
-int decode_unicode_ssetup(char ** pbcc_area, int bleft, struct cifsSesInfo *ses,
- const struct nls_table * nls_cp)
+static int decode_unicode_ssetup(char **pbcc_area, int bleft,
+ struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
{
int rc = 0;
int words_left, len;
- char * data = *pbcc_area;
+ char *data = *pbcc_area;
- cFYI(1,("bleft %d",bleft));
+ cFYI(1, ("bleft %d", bleft));
- /* word align, if bytes remaining is not even */
- if(bleft % 2) {
- bleft--;
- data++;
- }
+ /* SMB header is unaligned, so cifs servers word align start of
+ Unicode strings */
+ data++;
+ bleft--; /* Windows servers do not always double null terminate
+ their final Unicode string - in which case we
+ now will not attempt to decode the byte of junk
+ which follows it */
+
words_left = bleft / 2;
/* save off server operating system */
/* We look for obvious messed up bcc or strings in response so we do not go off
the end since (at least) WIN2K and Windows XP have a major bug in not null
terminating last Unicode string in response */
- if(len >= words_left)
+ if (len >= words_left)
return rc;
- if(ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
/* UTF-8 string will not grow more than four times as big as UCS-16 */
ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
- if(ses->serverOS != NULL) {
- cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len,
- nls_cp);
- }
+ if (ses->serverOS != NULL)
+ cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
data += 2 * (len + 1);
words_left -= len + 1;
/* save off server network operating system */
len = UniStrnlen((wchar_t *) data, words_left);
- if(len >= words_left)
+ if (len >= words_left)
return rc;
- if(ses->serverNOS)
- kfree(ses->serverNOS);
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
- if(ses->serverNOS != NULL) {
+ if (ses->serverNOS != NULL) {
cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
nls_cp);
- if(strncmp(ses->serverNOS, "NT LAN Manager 4",16) == 0) {
- cFYI(1,("NT4 server"));
+ if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) {
+ cFYI(1, ("NT4 server"));
ses->flags |= CIFS_SES_NT4;
}
}
data += 2 * (len + 1);
words_left -= len + 1;
- /* save off server domain */
- len = UniStrnlen((wchar_t *) data, words_left);
-
- if(len > words_left)
- return rc;
-
- if(ses->serverDomain)
- kfree(ses->serverDomain);
- ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */
- if(ses->serverDomain != NULL) {
- cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
- nls_cp);
- ses->serverDomain[2*len] = 0;
- ses->serverDomain[(2*len) + 1] = 0;
- }
- data += 2 * (len + 1);
- words_left -= len + 1;
-
- cFYI(1,("words left: %d",words_left));
+ /* save off server domain */
+ len = UniStrnlen((wchar_t *) data, words_left);
+
+ if (len > words_left)
+ return rc;
+
+ kfree(ses->serverDomain);
+ ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */
+ if (ses->serverDomain != NULL) {
+ cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
+ nls_cp);
+ ses->serverDomain[2*len] = 0;
+ ses->serverDomain[(2*len) + 1] = 0;
+ }
+ data += 2 * (len + 1);
+ words_left -= len + 1;
+
+ cFYI(1, ("words left: %d", words_left));
return rc;
}
-int decode_ascii_ssetup(char ** pbcc_area, int bleft, struct cifsSesInfo *ses,
- const struct nls_table * nls_cp)
+static int decode_ascii_ssetup(char **pbcc_area, int bleft,
+ struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
{
int rc = 0;
int len;
- char * bcc_ptr = *pbcc_area;
+ char *bcc_ptr = *pbcc_area;
+
+ cFYI(1, ("decode sessetup ascii. bleft %d", bleft));
- cFYI(1,("decode sessetup ascii. bleft %d", bleft));
-
len = strnlen(bcc_ptr, bleft);
- if(len >= bleft)
+ if (len >= bleft)
return rc;
-
- if(ses->serverOS)
- kfree(ses->serverOS);
+
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
- if(ses->serverOS)
+ if (ses->serverOS)
strncpy(ses->serverOS, bcc_ptr, len);
+ if (strncmp(ses->serverOS, "OS/2", 4) == 0) {
+ cFYI(1, ("OS/2 server"));
+ ses->flags |= CIFS_SES_OS2;
+ }
bcc_ptr += len + 1;
bleft -= len + 1;
len = strnlen(bcc_ptr, bleft);
- if(len >= bleft)
+ if (len >= bleft)
return rc;
- if(ses->serverNOS)
- kfree(ses->serverNOS);
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len + 1, GFP_KERNEL);
- if(ses->serverNOS)
+ if (ses->serverNOS)
strncpy(ses->serverNOS, bcc_ptr, len);
bcc_ptr += len + 1;
bleft -= len + 1;
- len = strnlen(bcc_ptr, bleft);
- if(len > bleft)
- return rc;
-
- if(ses->serverDomain)
- kfree(ses->serverDomain);
-
- ses->serverDomain = kzalloc(len + 1, GFP_KERNEL);
- if(ses->serverOS)
- strncpy(ses->serverOS, bcc_ptr, len);
-
- bcc_ptr += len + 1;
- bleft -= len + 1;
+ len = strnlen(bcc_ptr, bleft);
+ if (len > bleft)
+ return rc;
- cFYI(1,("ascii: bytes left %d",bleft));
+ /* No domain field in LANMAN case. Domain is
+ returned by old servers in the SMB negprot response */
+ /* BB For newer servers which do not support Unicode,
+ but thus do return domain here we could add parsing
+ for it later, but it is not very important */
+ cFYI(1, ("ascii: bytes left %d", bleft));
return rc;
}
-int
+int
CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
const struct nls_table *nls_cp)
{
int rc = 0;
int wct;
- int i;
struct smb_hdr *smb_buf;
char *bcc_ptr;
+ char *str_area;
SESSION_SETUP_ANDX *pSMB;
__u32 capabilities;
int count;
- int resp_buf_type = 0;
- struct kvec iov[1];
+ int resp_buf_type;
+ struct kvec iov[3];
enum securityEnum type;
__u16 action;
int bytes_remaining;
-
- if(ses == NULL)
+ struct key *spnego_key = NULL;
+
+ if (ses == NULL)
return -EINVAL;
type = ses->server->secType;
- if(type == LANMAN) {
+
+ cFYI(1, ("sess setup type %d", type));
+ if (type == LANMAN) {
#ifndef CONFIG_CIFS_WEAK_PW_HASH
/* LANMAN and plaintext are less secure and off by default.
So we make this explicitly be turned on in kconfig (in the
return -EOPNOTSUPP;
#endif
wct = 10; /* lanman 2 style sessionsetup */
- } else if(type == NTLM) /* NTLMv2 may retry NTLM */
+ } else if ((type == NTLM) || (type == NTLMv2)) {
+ /* For NTLMv2 failures eventually may need to retry NTLM */
wct = 13; /* old style NTLM sessionsetup */
- else /* same size for negotiate or auth, NTLMSSP or extended security */
+ } else /* same size: negotiate or auth, NTLMSSP or extended security */
wct = 12;
rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses,
(void **)&smb_buf);
- if(rc)
+ if (rc)
return rc;
pSMB = (SESSION_SETUP_ANDX *)smb_buf;
capabilities = cifs_ssetup_hdr(ses, pSMB);
- bcc_ptr = pByteArea(smb_buf);
- if(type == LANMAN) {
+ /* we will send the SMB in three pieces:
+ a fixed length beginning part, an optional
+ SPNEGO blob (which can be zero length), and a
+ last part which will include the strings
+ and rest of bcc area. This allows us to avoid
+ a large buffer 17K allocation */
+ iov[0].iov_base = (char *)pSMB;
+ iov[0].iov_len = smb_buf->smb_buf_length + 4;
+
+ /* setting this here allows the code at the end of the function
+ to free the request buffer if there's an error */
+ resp_buf_type = CIFS_SMALL_BUFFER;
+
+ /* 2000 big enough to fit max user, domain, NOS name etc. */
+ str_area = kmalloc(2000, GFP_KERNEL);
+ if (str_area == NULL) {
+ rc = -ENOMEM;
+ goto ssetup_exit;
+ }
+ bcc_ptr = str_area;
+
+ ses->flags &= ~CIFS_SES_LANMAN;
+
+ iov[1].iov_base = NULL;
+ iov[1].iov_len = 0;
+
+ if (type == LANMAN) {
#ifdef CONFIG_CIFS_WEAK_PW_HASH
- char lnm_session_key[CIFS_SESSION_KEY_SIZE];
- char password_with_pad[CIFS_ENCPWD_SIZE];
+ char lnm_session_key[CIFS_SESS_KEY_SIZE];
+
+ pSMB->req.hdr.Flags2 &= ~SMBFLG2_UNICODE;
/* no capabilities flags in old lanman negotiation */
- pSMB->old_req.PasswordLength = CIFS_SESSION_KEY_SIZE;
+ pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
/* BB calculate hash with password */
/* and copy into bcc */
- memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
- strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
-
- /* calculate old style session key */
- /* toupper may be less broken then repeatedly calling
- nls_toupper would be, but neither handles multibyte code pages
- but the only alternative would be converting to UCS-16 (Unicode)
- uppercasing and converting back which is only worth doing if
- we knew it were utf8. utf8 code page needs its own
- toupper and tolower and strnicmp functions */
-
- for(i = 0; i< CIFS_ENCPWD_SIZE; i++) {
- password_with_pad[i] = toupper(password_with_pad[i]);
- }
-
- SMBencrypt(password_with_pad, ses->server->cryptKey,
- lnm_session_key);
-
-#ifdef CONFIG_CIFS_DEBUG2
- cifs_dump_mem("cryptkey: ",ses->server->cryptKey,
- CIFS_SESSION_KEY_SIZE);
-#endif
- /* clear password before we return/free memory */
- memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
- memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESSION_KEY_SIZE);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
+ calc_lanman_hash(ses, lnm_session_key);
+ ses->flags |= CIFS_SES_LANMAN;
+ memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
+ bcc_ptr += CIFS_SESS_KEY_SIZE;
/* can not sign if LANMAN negotiated so no need
to calculate signing key? but what if server
changed to do higher than lanman dialect and
we reconnected would we ever calc signing_key? */
- cERROR(1,("Negotiating LANMAN setting up strings"));
+ cFYI(1, ("Negotiating LANMAN setting up strings"));
/* Unicode not allowed for LANMAN dialects */
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
-#endif
+#endif
} else if (type == NTLM) {
- char ntlm_session_key[CIFS_SESSION_KEY_SIZE];
+ char ntlm_session_key[CIFS_SESS_KEY_SIZE];
pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
pSMB->req_no_secext.CaseInsensitivePasswordLength =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ cpu_to_le16(CIFS_SESS_KEY_SIZE);
pSMB->req_no_secext.CaseSensitivePasswordLength =
- cpu_to_le16(CIFS_SESSION_KEY_SIZE);
-
+ cpu_to_le16(CIFS_SESS_KEY_SIZE);
+
/* calculate session key */
SMBNTencrypt(ses->password, ses->server->cryptKey,
ntlm_session_key);
- if(first_time) /* should this be moved into common code
+ if (first_time) /* should this be moved into common code
with similar ntlmv2 path? */
- cifs_calculate_mac_key(
- ses->server->mac_signing_key,
+ cifs_calculate_mac_key(&ses->server->mac_signing_key,
ntlm_session_key, ses->password);
/* copy session key */
- memcpy(bcc_ptr, (char *)ntlm_session_key,CIFS_SESSION_KEY_SIZE);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
- memcpy(bcc_ptr, (char *)ntlm_session_key,CIFS_SESSION_KEY_SIZE);
- bcc_ptr += CIFS_SESSION_KEY_SIZE;
- if(ses->capabilities & CAP_UNICODE)
+ memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
+ bcc_ptr += CIFS_SESS_KEY_SIZE;
+ memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
+ bcc_ptr += CIFS_SESS_KEY_SIZE;
+ if (ses->capabilities & CAP_UNICODE) {
+ /* unicode strings must be word aligned */
+ if (iov[0].iov_len % 2) {
+ *bcc_ptr = 0;
+ bcc_ptr++;
+ }
unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
- else
+ } else
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
- } else /* NTLMSSP or SPNEGO */ {
+ } else if (type == NTLMv2) {
+ char *v2_sess_key =
+ kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL);
+
+ /* BB FIXME change all users of v2_sess_key to
+ struct ntlmv2_resp */
+
+ if (v2_sess_key == NULL) {
+ rc = -ENOMEM;
+ goto ssetup_exit;
+ }
+
+ pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
+
+ /* LM2 password would be here if we supported it */
+ pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
+ /* cpu_to_le16(LM2_SESS_KEY_SIZE); */
+
+ pSMB->req_no_secext.CaseSensitivePasswordLength =
+ cpu_to_le16(sizeof(struct ntlmv2_resp));
+
+ /* calculate session key */
+ setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp);
+ if (first_time) /* should this be moved into common code
+ with similar ntlmv2 path? */
+ /* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key,
+ response BB FIXME, v2_sess_key); */
+
+ /* copy session key */
+
+ /* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE);
+ bcc_ptr += LM2_SESS_KEY_SIZE; */
+ memcpy(bcc_ptr, (char *)v2_sess_key,
+ sizeof(struct ntlmv2_resp));
+ bcc_ptr += sizeof(struct ntlmv2_resp);
+ kfree(v2_sess_key);
+ if (ses->capabilities & CAP_UNICODE) {
+ if (iov[0].iov_len % 2) {
+ *bcc_ptr = 0;
+ bcc_ptr++;
+ }
+ unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
+ } else
+ ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
+ } else if (type == Kerberos || type == MSKerberos) {
+#ifdef CONFIG_CIFS_UPCALL
+ struct cifs_spnego_msg *msg;
+ spnego_key = cifs_get_spnego_key(ses);
+ if (IS_ERR(spnego_key)) {
+ rc = PTR_ERR(spnego_key);
+ spnego_key = NULL;
+ goto ssetup_exit;
+ }
+
+ msg = spnego_key->payload.data;
+ /* check version field to make sure that cifs.upcall is
+ sending us a response in an expected form */
+ if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
+ cERROR(1, ("incorrect version of cifs.upcall (expected"
+ " %d but got %d)",
+ CIFS_SPNEGO_UPCALL_VERSION, msg->version));
+ rc = -EKEYREJECTED;
+ goto ssetup_exit;
+ }
+ /* bail out if key is too long */
+ if (msg->sesskey_len >
+ sizeof(ses->server->mac_signing_key.data.krb5)) {
+ cERROR(1, ("Kerberos signing key too long (%u bytes)",
+ msg->sesskey_len));
+ rc = -EOVERFLOW;
+ goto ssetup_exit;
+ }
+ if (first_time) {
+ ses->server->mac_signing_key.len = msg->sesskey_len;
+ memcpy(ses->server->mac_signing_key.data.krb5,
+ msg->data, msg->sesskey_len);
+ }
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
capabilities |= CAP_EXTENDED_SECURITY;
pSMB->req.Capabilities = cpu_to_le32(capabilities);
- /* BB set password lengths */
+ iov[1].iov_base = msg->data + msg->sesskey_len;
+ iov[1].iov_len = msg->secblob_len;
+ pSMB->req.SecurityBlobLength = cpu_to_le16(iov[1].iov_len);
+
+ if (ses->capabilities & CAP_UNICODE) {
+ /* unicode strings must be word aligned */
+ if ((iov[0].iov_len + iov[1].iov_len) % 2) {
+ *bcc_ptr = 0;
+ bcc_ptr++;
+ }
+ unicode_oslm_strings(&bcc_ptr, nls_cp);
+ unicode_domain_string(&bcc_ptr, ses, nls_cp);
+ } else
+ /* BB: is this right? */
+ ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
+#else /* ! CONFIG_CIFS_UPCALL */
+ cERROR(1, ("Kerberos negotiated but upcall support disabled!"));
+ rc = -ENOSYS;
+ goto ssetup_exit;
+#endif /* CONFIG_CIFS_UPCALL */
+ } else {
+ cERROR(1, ("secType %d not supported!", type));
+ rc = -ENOSYS;
+ goto ssetup_exit;
}
- count = (long) bcc_ptr - (long) pByteArea(smb_buf);
- smb_buf->smb_buf_length += count;
+ iov[2].iov_base = str_area;
+ iov[2].iov_len = (long) bcc_ptr - (long) str_area;
- /* if we switch to small buffers, count will need to be fewer
- than 383 (strings less than 335 bytes) */
+ count = iov[1].iov_len + iov[2].iov_len;
+ smb_buf->smb_buf_length += count;
BCC_LE(smb_buf) = cpu_to_le16(count);
-
- /* BB FIXME check for other non ntlm code paths */
-
- /* BB check is this too big for a small smb? */
-
- iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = smb_buf->smb_buf_length + 4;
-
- rc = SendReceive2(xid, ses, iov, 1 /* num_iovecs */, &resp_buf_type, 0);
+ rc = SendReceive2(xid, ses, iov, 3 /* num_iovecs */, &resp_buf_type,
+ CIFS_STD_OP /* not long */ | CIFS_LOG_ERROR);
/* SMB request buf freed in SendReceive2 */
- cFYI(1,("ssetup rc from sendrecv2 is %d",rc));
- if(rc)
+ cFYI(1, ("ssetup rc from sendrecv2 is %d", rc));
+ if (rc)
goto ssetup_exit;
pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base;
smb_buf = (struct smb_hdr *)iov[0].iov_base;
- if((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) {
+ if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) {
rc = -EIO;
- cERROR(1,("bad word count %d", smb_buf->WordCount));
+ cERROR(1, ("bad word count %d", smb_buf->WordCount));
goto ssetup_exit;
}
action = le16_to_cpu(pSMB->resp.Action);
if (action & GUEST_LOGIN)
- cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */
+ cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */
ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */
cFYI(1, ("UID = %d ", ses->Suid));
/* response can have either 3 or 4 word count - Samba sends 3 */
bytes_remaining = BCC(smb_buf);
bcc_ptr = pByteArea(smb_buf);
- if(smb_buf->WordCount == 4) {
+ if (smb_buf->WordCount == 4) {
__u16 blob_len;
blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength);
bcc_ptr += blob_len;
- if(blob_len > bytes_remaining) {
- cERROR(1,("bad security blob length %d", blob_len));
+ if (blob_len > bytes_remaining) {
+ cERROR(1, ("bad security blob length %d", blob_len));
rc = -EINVAL;
goto ssetup_exit;
}
bytes_remaining -= blob_len;
- }
+ }
/* BB check if Unicode and decode strings */
- if(smb_buf->Flags2 & SMBFLG2_UNICODE)
+ if (smb_buf->Flags2 & SMBFLG2_UNICODE)
rc = decode_unicode_ssetup(&bcc_ptr, bytes_remaining,
ses, nls_cp);
else
- rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining, ses,nls_cp);
-
+ rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining,
+ ses, nls_cp);
+
ssetup_exit:
- if(resp_buf_type == CIFS_SMALL_BUFFER) {
- cFYI(1,("ssetup freeing small buf %p", iov[0].iov_base));
+ if (spnego_key) {
+ key_revoke(spnego_key);
+ key_put(spnego_key);
+ }
+ kfree(str_area);
+ if (resp_buf_type == CIFS_SMALL_BUFFER) {
+ cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base));
cifs_small_buf_release(iov[0].iov_base);
- } else if(resp_buf_type == CIFS_LARGE_BUFFER)
+ } else if (resp_buf_type == CIFS_LARGE_BUFFER)
cifs_buf_release(iov[0].iov_base);
return rc;
}
-#endif /* CONFIG_CIFS_EXPERIMENTAL */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff