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authorJeff Layton <jlayton@redhat.com>2010-04-24 07:57:49 -0400
committerSteve French <sfrench@us.ibm.com>2010-05-05 23:24:11 +0000
commit26efa0bac9dc3587ee8892c06642735bcded59e5 (patch)
tree2d6d75ffa9671b972cadcbc62ed365e992ea247a /fs/cifs
parent198b5682781b97251afd9025dbf559a77969abdd (diff)
downloadvexpress-lsk-26efa0bac9dc3587ee8892c06642735bcded59e5.tar.gz
cifs: have decode_negTokenInit set flags in server struct
...rather than the secType. This allows us to get rid of the MSKerberos securityEnum. The client just makes a decision at upcall time. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/asn1.c30
-rw-r--r--fs/cifs/cifs_spnego.c4
-rw-r--r--fs/cifs/cifsglob.h6
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c12
-rw-r--r--fs/cifs/sess.c2
6 files changed, 26 insertions, 30 deletions
diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c
index 6d555c05dba..cfd1ce34e0b 100644
--- a/fs/cifs/asn1.c
+++ b/fs/cifs/asn1.c
@@ -492,17 +492,13 @@ compare_oid(unsigned long *oid1, unsigned int oid1len,
int
decode_negTokenInit(unsigned char *security_blob, int length,
- enum securityEnum *secType)
+ struct TCP_Server_Info *server)
{
struct asn1_ctx ctx;
unsigned char *end;
unsigned char *sequence_end;
unsigned long *oid = NULL;
unsigned int cls, con, tag, oidlen, rc;
- bool use_ntlmssp = false;
- bool use_kerberos = false;
- bool use_kerberosu2u = false;
- bool use_mskerberos = false;
/* cifs_dump_mem(" Received SecBlob ", security_blob, length); */
@@ -599,20 +595,17 @@ decode_negTokenInit(unsigned char *security_blob, int length,
*(oid + 1), *(oid + 2), *(oid + 3));
if (compare_oid(oid, oidlen, MSKRB5_OID,
- MSKRB5_OID_LEN) &&
- !use_mskerberos)
- use_mskerberos = true;
+ MSKRB5_OID_LEN))
+ server->sec_mskerberos = true;
else if (compare_oid(oid, oidlen, KRB5U2U_OID,
- KRB5U2U_OID_LEN) &&
- !use_kerberosu2u)
- use_kerberosu2u = true;
+ KRB5U2U_OID_LEN))
+ server->sec_kerberosu2u = true;
else if (compare_oid(oid, oidlen, KRB5_OID,
- KRB5_OID_LEN) &&
- !use_kerberos)
- use_kerberos = true;
+ KRB5_OID_LEN))
+ server->sec_kerberos = true;
else if (compare_oid(oid, oidlen, NTLMSSP_OID,
NTLMSSP_OID_LEN))
- use_ntlmssp = true;
+ server->sec_ntlmssp = true;
kfree(oid);
}
@@ -669,12 +662,5 @@ decode_negTokenInit(unsigned char *security_blob, int length,
cFYI(1, "Need to call asn1_octets_decode() function for %s",
ctx.pointer); /* is this UTF-8 or ASCII? */
decode_negtoken_exit:
- if (use_kerberos)
- *secType = Kerberos;
- else if (use_mskerberos)
- *secType = MSKerberos;
- else if (use_ntlmssp)
- *secType = RawNTLMSSP;
-
return 1;
}
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index c53587b8330..379bd7d9c05 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -133,9 +133,9 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
dp = description + strlen(description);
/* for now, only sec=krb5 and sec=mskrb5 are valid */
- if (server->secType == Kerberos)
+ if (server->sec_kerberos)
sprintf(dp, ";sec=krb5");
- else if (server->secType == MSKerberos)
+ else if (server->sec_mskerberos)
sprintf(dp, ";sec=mskrb5");
else
goto out;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c412568b4a1..4a99487400f 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -87,7 +87,6 @@ enum securityEnum {
RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */
/* NTLMSSP, */ /* can use rawNTLMSSP instead of NTLMSSP via SPNEGO */
Kerberos, /* Kerberos via SPNEGO */
- MSKerberos, /* MS Kerberos via SPNEGO */
};
enum protocolEnum {
@@ -186,6 +185,11 @@ struct TCP_Server_Info {
char ntlmv2_hash[16];
unsigned long lstrp; /* when we got last response from this server */
u16 dialect; /* dialect index that server chose */
+ /* extended security flavors that server supports */
+ bool sec_kerberos; /* supports plain Kerberos */
+ bool sec_mskerberos; /* supports legacy MS Kerberos */
+ bool sec_kerberosu2u; /* supports U2U Kerberos */
+ bool sec_ntlmssp; /* supports NTLMSSP */
};
/*
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 6fa808ec7e3..2e07da9a46f 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -85,7 +85,7 @@ extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *);
extern unsigned int smbCalcSize(struct smb_hdr *ptr);
extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
extern int decode_negTokenInit(unsigned char *security_blob, int length,
- enum securityEnum *secType);
+ struct TCP_Server_Info *server);
extern int cifs_convert_address(char *src, void *dst);
extern int map_smb_to_linux_error(struct smb_hdr *smb, int logErr);
extern void header_assemble(struct smb_hdr *, char /* command */ ,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 30742d8eef1..c65c3419dd3 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -597,13 +597,19 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
server->secType = RawNTLMSSP;
} else {
rc = decode_negTokenInit(pSMBr->u.extended_response.
- SecurityBlob,
- count - 16,
- &server->secType);
+ SecurityBlob, count - 16,
+ server);
if (rc == 1)
rc = 0;
else
rc = -EINVAL;
+
+ if (server->sec_kerberos || server->sec_mskerberos)
+ server->secType = Kerberos;
+ else if (server->sec_ntlmssp)
+ server->secType = RawNTLMSSP;
+ else
+ rc = -EOPNOTSUPP;
}
} else
server->capabilities &= ~CAP_EXTENDED_SECURITY;
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 84b92dfaf84..7707389bdf2 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -751,7 +751,7 @@ ssetup_ntlmssp_authenticate:
unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
} else
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
- } else if (type == Kerberos || type == MSKerberos) {
+ } else if (type == Kerberos) {
#ifdef CONFIG_CIFS_UPCALL
struct cifs_spnego_msg *msg;
spnego_key = cifs_get_spnego_key(ses);