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authorSteve French <sfrench@us.ibm.com>2006-01-13 21:34:58 -0800
committerSteve French <sfrench@us.ibm.com>2006-01-13 21:34:58 -0800
commiteeac8047fcf4c659eb15f2e27a0ef4aeba64157f (patch)
tree91b1e32bb9f2d6f9e9a122bd5e737df40701ab11 /fs/cifs
parent84153973a29dfb3f3d9fe2fe75c2cd613a3cdf27 (diff)
[CIFS] Fix CIFS to recognize share mode security
Fix Samba bugzilla bug 3301 In share mode encrypted password must be sent on tree connection (in our case only the NTLM password is sent, not the older LANMAN one). Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/CHANGES3
-rw-r--r--fs/cifs/cifsacl.h6
-rw-r--r--fs/cifs/cifssmb.c20
-rw-r--r--fs/cifs/connect.c27
4 files changed, 41 insertions, 15 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index c7995c96f06..d335015473a 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -3,7 +3,8 @@ Version 1.40
Use fsuid (fsgid) more consistently instead of uid (gid). Improve performance
of readpages by eliminating one extra memcpy. Allow update of file size
from remote server even if file is open for write as long as mount is
-directio.
+directio. Recognize share mode security and send NTLM encrypted password
+on tree connect if share mode negotiated.
Version 1.39
------------
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index d152ff50ea8..d0776ac2b80 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -26,13 +26,13 @@ struct cifs_sid {
__u8 revision; /* revision level */
__u8 num_subauths;
__u8 authority[6];
- __u8 sub_auth[4];
+ __u32 sub_auth[4];
/* next sub_auth if any ... */
} __attribute__((packed));
/* everyone */
-const cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+extern const struct cifs_sid sid_everyone;
/* group users */
-const cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+extern const struct cifs_sid sid_user;
#endif /* _CIFSACL_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index ca0f573e979..7a4e936d726 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -37,6 +37,7 @@
#include "cifsproto.h"
#include "cifs_unicode.h"
#include "cifs_debug.h"
+#include "cifsacl.h"
#ifdef CONFIG_CIFS_POSIX
static struct {
@@ -372,8 +373,10 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc == 0) {
- server->secMode = pSMBr->SecurityMode;
- server->secType = NTLM; /* BB override default for
+ server->secMode = pSMBr->SecurityMode;
+ if((server->secMode & SECMODE_USER) == 0)
+ cFYI(1,("share mode security"));
+ server->secType = NTLM; /* BB override default for
NTLMv2 or kerberos v5 */
/* one byte - no need to convert this or EncryptionKeyLen
from little endian */
@@ -383,7 +386,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
min(le32_to_cpu(pSMBr->MaxBufferSize),
(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
- cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
+ cFYI(0, ("Max buf = %d", ses->server->maxBuf));
GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
@@ -411,8 +414,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
(server->server_GUID,
pSMBr->u.extended_response.
GUID, 16) != 0) {
- cFYI(1,
- ("UID of server does not match previous connection to same ip address"));
+ cFYI(1, ("server UID changed"));
memcpy(server->
server_GUID,
pSMBr->u.
@@ -2494,8 +2496,14 @@ GetExtAttrOut:
#endif /* CONFIG_POSIX */
+
+/* security id for everyone */
+const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+/* group users */
+const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+
/* Convert CIFS ACL to POSIX form */
-static int parse_sec_desc(struct sec_desc * psec_desc, int acl_len)
+static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len)
{
return 0;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 1817d5313a8..88f60aa5205 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1795,7 +1795,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
cifs_sb->mnt_gid = volume_info.linux_gid;
cifs_sb->mnt_file_mode = volume_info.file_mode;
cifs_sb->mnt_dir_mode = volume_info.dir_mode;
- cFYI(1,("file mode: 0x%x dir mode: 0x%x",cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
+ cFYI(1,("file mode: 0x%x dir mode: 0x%x",
+ cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
if(volume_info.noperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
@@ -1972,7 +1973,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
__u32 capabilities;
__u16 count;
- cFYI(1, ("In sesssetup "));
+ cFYI(1, ("In sesssetup"));
if(ses == NULL)
return -EINVAL;
user = ses->userName;
@@ -3248,9 +3249,26 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
pSMB->AndXCommand = 0xFF;
pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
- pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
bcc_ptr = &pSMB->Password[0];
- bcc_ptr++; /* skip password */
+ if((ses->server->secMode) & SECMODE_USER) {
+ pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
+ bcc_ptr++; /* skip password */
+ } else {
+ pSMB->PasswordLength = cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ /* BB FIXME add code to fail this if NTLMv2 or Kerberos
+ specified as required (when that support is added to
+ the vfs in the future) as only NTLM or the much
+ weaker LANMAN (which we do not send) is accepted
+ by Samba (not sure whether other servers allow
+ NTLMv2 password here) */
+ SMBNTencrypt(ses->password,
+ ses->server->cryptKey,
+ bcc_ptr);
+
+ bcc_ptr += CIFS_SESSION_KEY_SIZE;
+ *bcc_ptr = 0;
+ bcc_ptr++; /* align */
+ }
if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
@@ -3268,7 +3286,6 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */
bcc_ptr += 2; /* skip trailing null */
} else { /* ASCII */
-
strcpy(bcc_ptr, tree);
bcc_ptr += strlen(tree) + 1;
}