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-rw-r--r--fs/Kconfig40
-rw-r--r--fs/cifs/CHANGES5
-rw-r--r--fs/cifs/Makefile2
-rw-r--r--fs/cifs/cifs_debug.c84
-rw-r--r--fs/cifs/cifs_debug.h4
-rw-r--r--fs/cifs/cifs_unicode.c1
-rw-r--r--fs/cifs/cifsencrypt.c2
-rw-r--r--fs/cifs/cifsfs.c4
-rw-r--r--fs/cifs/cifsglob.h51
-rw-r--r--fs/cifs/cifspdu.h37
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c95
-rw-r--r--fs/cifs/connect.c39
-rw-r--r--fs/cifs/dir.c2
-rw-r--r--fs/cifs/fcntl.c4
-rw-r--r--fs/cifs/inode.c3
-rw-r--r--fs/cifs/misc.c10
-rw-r--r--fs/cifs/readdir.c16
-rw-r--r--fs/cifs/sess.c511
-rw-r--r--fs/cifs/smbencrypt.c1
20 files changed, 837 insertions, 76 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index f9b5842c8d2d..c4eaacb86071 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1663,7 +1663,7 @@ config CIFS_STATS
mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
config CIFS_STATS2
- bool "CIFS extended statistics"
+ bool "Extended statistics"
depends on CIFS_STATS
help
Enabling this option will allow more detailed statistics on SMB
@@ -1676,6 +1676,32 @@ config CIFS_STATS2
Unless you are a developer or are doing network performance analysis
or tuning, say N.
+config CIFS_WEAK_PW_HASH
+ bool "Support legacy servers which use weaker LANMAN security"
+ depends on CIFS
+ help
+ Modern CIFS servers including Samba and most Windows versions
+ (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
+ security mechanisms. These hash the password more securely
+ than the mechanisms used in the older LANMAN version of the
+ SMB protocol needed to establish sessions with old SMB servers.
+
+ Enabling this option allows the cifs module to mount to older
+ LANMAN based servers such as OS/2 and Windows 95, but such
+ mounts may be less secure than mounts using NTLM or more recent
+ security mechanisms if you are on a public network. Unless you
+ have a need to access old SMB servers (and are on a private
+ network) you probably want to say N. Even if this support
+ is enabled in the kernel build, they will not be used
+ automatically. At runtime LANMAN mounts are disabled but
+ can be set to required (or optional) either in
+ /proc/fs/cifs (see fs/cifs/README for more detail) or via an
+ option on the mount command. This support is disabled by
+ default in order to reduce the possibility of a downgrade
+ attack.
+
+ If unsure, say N.
+
config CIFS_XATTR
bool "CIFS extended attributes"
depends on CIFS
@@ -1704,6 +1730,16 @@ config CIFS_POSIX
(such as Samba 3.10 and later) which can negotiate
CIFS POSIX ACL support. If unsure, say N.
+config CIFS_DEBUG2
+ bool "Enable additional CIFS debugging routines
+ help
+ Enabling this option adds a few more debugging routines
+ to the cifs code which slightly increases the size of
+ the cifs module and can cause additional logging of debug
+ messages in some error paths, slowing performance. This
+ option can be turned off unless you are debugging
+ cifs problems. If unsure, say N.
+
config CIFS_EXPERIMENTAL
bool "CIFS Experimental Features (EXPERIMENTAL)"
depends on CIFS && EXPERIMENTAL
@@ -1719,7 +1755,7 @@ config CIFS_EXPERIMENTAL
If unsure, say N.
config CIFS_UPCALL
- bool "CIFS Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
+ bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
depends on CIFS_EXPERIMENTAL
select CONNECTOR
help
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 953d2f7f88b0..b878dfcff0f0 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,8 @@
+Version 1.44
+------------
+Rewritten sessionsetup support, including support for legacy SMB
+session setup needed for OS/2 and older servers such as Windows 95 and 98.
+
Version 1.43
------------
POSIX locking to servers which support CIFS POSIX Extensions
diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
index 58c77254a23b..a26f26ed5a17 100644
--- a/fs/cifs/Makefile
+++ b/fs/cifs/Makefile
@@ -3,4 +3,4 @@
#
obj-$(CONFIG_CIFS) += cifs.o
-cifs-objs := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o md4.o md5.o cifs_unicode.o nterr.o xattr.o cifsencrypt.o fcntl.o readdir.o ioctl.o ntlmssp.o
+cifs-objs := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o md4.o md5.o cifs_unicode.o nterr.o xattr.o cifsencrypt.o fcntl.o readdir.o ioctl.o sess.o
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index f4124a32bef8..7f4013a8607f 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -39,7 +39,7 @@ cifs_dump_mem(char *label, void *data, int length)
char *charptr = data;
char buf[10], line[80];
- printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\n",
+ printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
label, length, data);
for (i = 0; i < length; i += 16) {
line[0] = 0;
@@ -57,6 +57,57 @@ cifs_dump_mem(char *label, void *data, int length)
}
}
+#ifdef CONFIG_CIFS_DEBUG2
+void cifs_dump_detail(struct smb_hdr * smb)
+{
+ cERROR(1,("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
+ smb->Command, smb->Status.CifsError,
+ smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
+ cERROR(1,("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
+}
+
+
+void cifs_dump_mids(struct TCP_Server_Info * server)
+{
+ struct list_head *tmp;
+ struct mid_q_entry * mid_entry;
+
+ if(server == NULL)
+ return;
+
+ cERROR(1,("Dump pending requests:"));
+ spin_lock(&GlobalMid_Lock);
+ list_for_each(tmp, &server->pending_mid_q) {
+ mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
+ if(mid_entry) {
+ cERROR(1,("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
+ mid_entry->midState,
+ (int)mid_entry->command,
+ mid_entry->pid,
+ mid_entry->tsk,
+ mid_entry->mid));
+#ifdef CONFIG_CIFS_STATS2
+ cERROR(1,("IsLarge: %d buf: %p time rcv: %ld now: %ld",
+ mid_entry->largeBuf,
+ mid_entry->resp_buf,
+ mid_entry->when_received,
+ jiffies));
+#endif /* STATS2 */
+ cERROR(1,("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
+ mid_entry->multiEnd));
+ if(mid_entry->resp_buf) {
+ cifs_dump_detail(mid_entry->resp_buf);
+ cifs_dump_mem("existing buf: ",
+ mid_entry->resp_buf,
+ 62 /* fixme */);
+ }
+
+ }
+ }
+ spin_unlock(&GlobalMid_Lock);
+}
+#endif /* CONFIG_CIFS_DEBUG2 */
+
#ifdef CONFIG_PROC_FS
static int
cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
@@ -73,7 +124,6 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
*beginBuffer = buf + offset;
-
length =
sprintf(buf,
"Display Internal CIFS Data Structures for Debugging\n"
@@ -397,10 +447,10 @@ static read_proc_t multiuser_mount_read;
static write_proc_t multiuser_mount_write;
static read_proc_t extended_security_read;
static write_proc_t extended_security_write;
-static read_proc_t ntlmv2_enabled_read;
+/* static read_proc_t ntlmv2_enabled_read;
static write_proc_t ntlmv2_enabled_write;
static read_proc_t packet_signing_enabled_read;
-static write_proc_t packet_signing_enabled_write;
+static write_proc_t packet_signing_enabled_write;*/
static read_proc_t experimEnabled_read;
static write_proc_t experimEnabled_write;
static read_proc_t linuxExtensionsEnabled_read;
@@ -469,7 +519,7 @@ cifs_proc_init(void)
if (pde)
pde->write_proc = lookupFlag_write;
- pde =
+/* pde =
create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
ntlmv2_enabled_read, NULL);
if (pde)
@@ -479,7 +529,7 @@ cifs_proc_init(void)
create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
packet_signing_enabled_read, NULL);
if (pde)
- pde->write_proc = packet_signing_enabled_write;
+ pde->write_proc = packet_signing_enabled_write;*/
}
void
@@ -496,9 +546,9 @@ cifs_proc_clean(void)
#endif
remove_proc_entry("MultiuserMount", proc_fs_cifs);
remove_proc_entry("OplockEnabled", proc_fs_cifs);
- remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
+/* remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */
remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
- remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
+/* remove_proc_entry("PacketSigningEnabled",proc_fs_cifs); */
remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
remove_proc_entry("Experimental",proc_fs_cifs);
remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
@@ -787,7 +837,7 @@ extended_security_read(char *page, char **start, off_t off,
{
int len;
- len = sprintf(page, "%d\n", extended_security);
+ len = sprintf(page, "0x%x\n", extended_security);
len -= off;
*start = page + off;
@@ -808,19 +858,25 @@ extended_security_write(struct file *file, const char __user *buffer,
{
char c;
int rc;
+ cERROR(1,("size %ld",count)); /* BB removeme BB */
+ if((count < 2) || (count > 8))
+ return -EINVAL;
rc = get_user(c, buffer);
+
+/* BB fixme need to parse more characters in order to handle CIFSSEC flags */
+
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
- extended_security = 0;
+ extended_security = CIFSSEC_DEF; /* default */
else if (c == '1' || c == 'y' || c == 'Y')
- extended_security = 1;
+ extended_security = CIFSSEC_MAX;
return count;
}
-static int
+/* static int
ntlmv2_enabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
@@ -855,6 +911,8 @@ ntlmv2_enabled_write(struct file *file, const char __user *buffer,
ntlmv2_support = 0;
else if (c == '1' || c == 'y' || c == 'Y')
ntlmv2_support = 1;
+ else if (c == '2')
+ ntlmv2_support = 2;
return count;
}
@@ -898,7 +956,7 @@ packet_signing_enabled_write(struct file *file, const char __user *buffer,
sign_CIFS_PDUs = 2;
return count;
-}
+} */
#endif
diff --git a/fs/cifs/cifs_debug.h b/fs/cifs/cifs_debug.h
index 4304d9dcfb6c..c26cd0d2c6d5 100644
--- a/fs/cifs/cifs_debug.h
+++ b/fs/cifs/cifs_debug.h
@@ -24,6 +24,10 @@
#define _H_CIFS_DEBUG
void cifs_dump_mem(char *label, void *data, int length);
+#ifdef CONFIG_CIFS_DEBUG2
+void cifs_dump_detail(struct smb_hdr *);
+void cifs_dump_mids(struct TCP_Server_Info *);
+#endif
extern int traceSMB; /* flag which enables the function below */
void dump_smb(struct smb_hdr *, int);
#define CIFS_INFO 0x01
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index d2b128255944..d2a8b2941fc2 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -22,6 +22,7 @@
#include "cifs_unicode.h"
#include "cifs_uniupr.h"
#include "cifspdu.h"
+#include "cifsglob.h"
#include "cifs_debug.h"
/*
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index e7d63737e651..08781a4698b4 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -225,6 +225,8 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_
user_name_len = strlen(ses->userName);
if(user_name_len > MAX_USERNAME_SIZE)
return -EINVAL;
+ if(ses->domainName == NULL)
+ return -EINVAL; /* BB should we use CIFS_LINUX_DOM */
dom_name_len = strlen(ses->domainName);
if(dom_name_len > MAX_USERNAME_SIZE)
return -EINVAL;
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index c262d8874ce9..700570522b23 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -56,8 +56,8 @@ unsigned int experimEnabled = 0;
unsigned int linuxExtEnabled = 1;
unsigned int lookupCacheEnabled = 1;
unsigned int multiuser_mount = 0;
-unsigned int extended_security = 0;
-unsigned int ntlmv2_support = 0;
+unsigned int extended_security = CIFSSEC_DEF;
+/* unsigned int ntlmv2_support = 0; */
unsigned int sign_CIFS_PDUs = 1;
extern struct task_struct * oplockThread; /* remove sparse warning */
struct task_struct * oplockThread = NULL;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 006eb33bff5f..7a042041a16a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -88,7 +88,8 @@ enum statusEnum {
};
enum securityEnum {
- NTLM = 0, /* Legacy NTLM012 auth with NTLM hash */
+ LANMAN = 0, /* Legacy LANMAN auth */
+ NTLM, /* Legacy NTLM012 auth with NTLM hash */
NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
RawNTLMSSP, /* NTLMSSP without SPNEGO */
NTLMSSP, /* NTLMSSP via SPNEGO */
@@ -179,7 +180,9 @@ struct cifsUidInfo {
struct cifsSesInfo {
struct list_head cifsSessionList;
struct semaphore sesSem;
+#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
+#endif
struct TCP_Server_Info *server; /* pointer to server info */
atomic_t inUse; /* # of mounts (tree connections) on this ses */
enum statusEnum status;
@@ -194,7 +197,7 @@ struct cifsSesInfo {
char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
char userName[MAX_USERNAME_SIZE + 1];
- char domainName[MAX_USERNAME_SIZE + 1];
+ char * domainName;
char * password;
};
/* session flags */
@@ -391,9 +394,9 @@ struct mid_q_entry {
struct smb_hdr *resp_buf; /* response buffer */
int midState; /* wish this were enum but can not pass to wait_event */
__u8 command; /* smb command code */
- unsigned multiPart:1; /* multiple responses to one SMB request */
unsigned largeBuf:1; /* if valid response, is pointer to large buf */
- unsigned multiResp:1; /* multiple trans2 responses for one request */
+ unsigned multiRsp:1; /* multiple trans2 responses for one request */
+ unsigned multiEnd:1; /* both received */
};
struct oplock_q_entry {
@@ -430,15 +433,35 @@ struct dir_notify_req {
#define CIFS_LARGE_BUFFER 2
#define CIFS_IOVEC 4 /* array of response buffers */
-/* Type of session setup needed */
-#define CIFS_PLAINTEXT 0
-#define CIFS_LANMAN 1
-#define CIFS_NTLM 2
-#define CIFS_NTLMSSP_NEG 3
-#define CIFS_NTLMSSP_AUTH 4
-#define CIFS_SPNEGO_INIT 5
-#define CIFS_SPNEGO_TARG 6
-
+/* Security Flags: indicate type of session setup needed */
+#define CIFSSEC_MAY_SIGN 0x00001
+#define CIFSSEC_MAY_NTLM 0x00002
+#define CIFSSEC_MAY_NTLMV2 0x00004
+#define CIFSSEC_MAY_KRB5 0x00008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFSSEC_MAY_LANMAN 0x00010
+#define CIFSSEC_MAY_PLNTXT 0x00020
+#endif /* weak passwords */
+#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
+
+#define CIFSSEC_MUST_SIGN 0x01001
+/* note that only one of the following can be set so the
+result of setting MUST flags more than once will be to
+require use of the stronger protocol */
+#define CIFSSEC_MUST_NTLM 0x02002
+#define CIFSSEC_MUST_NTLMV2 0x04004
+#define CIFSSEC_MUST_KRB5 0x08008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFSSEC_MUST_LANMAN 0x10010
+#define CIFSSEC_MUST_PLNTXT 0x20020
+#define CIFSSEC_MASK 0x37037 /* current flags supported if weak */
+#else
+#define CIFSSEC_MASK 0x07007 /* flags supported if no weak config */
+#endif /* WEAK_PW_HASH */
+#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
+
+#define CIFSSEC_DEF CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2
+#define CIFSSEC_MAX CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2
/*
*****************************************************************
* All constants go here
@@ -540,8 +563,8 @@ GLOBAL_EXTERN unsigned int experimEnabled;
GLOBAL_EXTERN unsigned int lookupCacheEnabled;
GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent
with more secure ntlmssp2 challenge/resp */
-GLOBAL_EXTERN unsigned int ntlmv2_support; /* better optional password hash */
GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
+GLOBAL_EXTERN unsigned int secFlags;
GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index b2233ac05bd2..e0ff9b56cc4c 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -16,7 +16,7 @@
*
* 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _CIFSPDU_H
@@ -24,8 +24,14 @@
#include <net/sock.h>
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define LANMAN_PROT 0
+#define CIFS_PROT 1
+#else
#define CIFS_PROT 0
-#define BAD_PROT CIFS_PROT+1
+#endif
+#define POSIX_PROT CIFS_PROT+1
+#define BAD_PROT 0xFFFF
/* SMB command codes */
/* Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
@@ -400,6 +406,25 @@ typedef struct negotiate_req {
unsigned char DialectsArray[1];
} __attribute__((packed)) NEGOTIATE_REQ;
+/* Dialect index is 13 for LANMAN */
+
+typedef struct lanman_neg_rsp {
+ struct smb_hdr hdr; /* wct = 13 */
+ __le16 DialectIndex;
+ __le16 SecurityMode;
+ __le16 MaxBufSize;
+ __le16 MaxMpxCount;
+ __le16 MaxNumberVcs;
+ __le16 RawMode;
+ __le32 SessionKey;
+ __le32 ServerTime;
+ __le16 ServerTimeZone;
+ __le16 EncryptionKeyLength;
+ __le16 Reserved;
+ __u16 ByteCount;
+ unsigned char EncryptionKey[1];
+} __attribute__((packed)) LANMAN_NEG_RSP;
+
typedef struct negotiate_rsp {
struct smb_hdr hdr; /* wct = 17 */
__le16 DialectIndex;
@@ -520,8 +545,8 @@ typedef union smb_com_session_setup_andx {
__le16 MaxMpxCount;
__le16 VcNumber;
__u32 SessionKey;
- __le16 PassswordLength;
- __u32 Reserved;
+ __le16 PasswordLength;
+ __u32 Reserved; /* encrypt key len and offset */
__le16 ByteCount;
unsigned char AccountPassword[1]; /* followed by */
/* STRING AccountName */
@@ -1844,13 +1869,13 @@ typedef struct {
typedef struct {
__le32 DeviceType;
__le32 DeviceCharacteristics;
-} __attribute__((packed)) FILE_SYSTEM_DEVICE_INFO; /* device info, level 0x104 */
+} __attribute__((packed)) FILE_SYSTEM_DEVICE_INFO; /* device info level 0x104 */
typedef struct {
__le32 Attributes;
__le32 MaxPathNameComponentLength;
__le32 FileSystemNameLen;
- char FileSystemName[52]; /* do not really need to save this - so potentially get only subset of name */
+ char FileSystemName[52]; /* do not have to save this - get subset? */
} __attribute__((packed)) FILE_SYSTEM_ATTRIBUTE_INFO;
/******************************************************************************/
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 310ea2f0e0bf..ff78cf7b0d1b 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -69,7 +69,7 @@ extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
struct cifsSesInfo *ses,
void ** request_buf);
extern int CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
- const int stage, int * pNTLMv2_flg,
+ const int stage,
const struct nls_table *nls_cp);
#endif
extern __u16 GetNextMid(struct TCP_Server_Info *server);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index f00369277c06..da3154fa9c8a 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -44,8 +44,11 @@ static struct {
int index;
char *name;
} protocols[] = {
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+ {LANMAN_PROT, "\2LM1.2X002"},
+#endif /* weak password hashing for legacy clients */
{CIFS_PROT, "\2NT LM 0.12"},
- {CIFS_PROT, "\2POSIX 2"},
+ {POSIX_PROT, "\2POSIX 2"},
{BAD_PROT, "\2"}
};
#else
@@ -53,11 +56,29 @@ static struct {
int index;
char *name;
} protocols[] = {
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+ {LANMAN_PROT, "\2LM1.2X002"},
+#endif /* weak password hashing for legacy clients */
{CIFS_PROT, "\2NT LM 0.12"},
{BAD_PROT, "\2"}
};
#endif
+/* define the number of elements in the cifs dialect array */
+#ifdef CONFIG_CIFS_POSIX
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFS_NUM_PROT 3
+#else
+#define CIFS_NUM_PROT 2
+#endif /* CIFS_WEAK_PW_HASH */
+#else /* not posix */
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFS_NUM_PROT 2
+#else
+#define CIFS_NUM_PROT 1
+#endif /* CONFIG_CIFS_WEAK_PW_HASH */
+#endif /* CIFS_POSIX */
+
/* Mark as invalid, all open files on tree connections since they
were closed when session to server was lost */
@@ -322,7 +343,8 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* potential retries of smb operations it turns out we can determine */
/* from the mid flags when the request buffer can be resent without */
/* having to use a second distinct buffer for the response */
- *response_buf = *request_buf;
+ if(response_buf)
+ *response_buf = *request_buf;
header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
wct /*wct */ );
@@ -373,6 +395,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
NEGOTIATE_RSP *pSMBr;
int rc = 0;
int bytes_returned;
+ int i;
struct TCP_Server_Info * server;
u16 count;
@@ -388,19 +411,71 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
return rc;
pSMB->hdr.Mid = GetNextMid(server);
pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
- if (extended_security)
- pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
-
- count = strlen(protocols[0].name) + 1;
- strncpy(pSMB->DialectsArray, protocols[0].name, 30);
- /* null guaranteed to be at end of source and target buffers anyway */
-
+/* if (extended_security)
+ pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;*/
+
+ count = 0;
+ for(i=0;i<CIFS_NUM_PROT;i++) {
+ strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
+ count += strlen(protocols[i].name) + 1;
+ /* null at end of source and target buffers anyway */
+ }
pSMB->hdr.smb_buf_length += count;
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc == 0) {
+ cFYI(1,("Dialect: %d", pSMBr->DialectIndex));
+ /* Check wct = 1 error case */
+ if((pSMBr->hdr.WordCount < 13)
+ || (pSMBr->DialectIndex == BAD_PROT)) {
+ /* core returns wct = 1, but we do not ask for
+ core - otherwise it just comes when dialect
+ index is -1 indicating we could not negotiate
+ a common dialect */
+ rc = -EOPNOTSUPP;
+ goto neg_err_exit;
+ } else if((pSMBr->hdr.WordCount == 13) &&
+ (pSMBr->DialectIndex == LANMAN_PROT)) {
+ struct lanman_neg_rsp * rsp =
+ (struct lanman_neg_rsp *)pSMBr;
+
+
+ /* BB Mark ses struct as negotiated lanman level BB */
+ server->secType = LANMAN;
+ server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode);
+ server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
+ server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize),
+ (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
+
+ /* BB what do we do with raw mode? BB */
+ server->timeZone = le16_to_cpu(rsp->ServerTimeZone);
+ /* Do we have to set signing flags? no signing
+ was available LANMAN - default should be ok */
+
+ /* BB FIXME set default dummy capabilities since
+ they are not returned by the server in this dialect */
+
+ /* get server time for time conversions and add
+ code to use it and timezone since this is not UTC */
+
+ if (rsp->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
+ memcpy(server->cryptKey, rsp->EncryptionKey,
+ CIFS_CRYPTO_KEY_SIZE);
+ } else {
+ rc = -EIO;
+ goto neg_err_exit;
+ }
+
+ cFYI(1,("LANMAN negotiated")); /* BB removeme BB */
+ goto neg_err_exit;
+ } else if(pSMBr->hdr.WordCount != 17) {
+ /* unknown wct */
+ rc = -EOPNOTSUPP;
+ goto neg_err_exit;
+ }
+
server->secMode = pSMBr->SecurityMode;
if((server->secMode & SECMODE_USER) == 0)
cFYI(1,("share mode security"));
@@ -479,7 +554,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
}
}
-
+neg_err_exit:
cifs_buf_release(pSMB);
return rc;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index bae1479318d1..7ffb8f244f6a 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -49,8 +49,6 @@
static DECLARE_COMPLETION(cifsd_complete);
-extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
- unsigned char *p24);
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
unsigned char *p24);
@@ -585,9 +583,11 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
/* merge response - fix up 1st*/
if(coalesce_t2(smb_buffer,
mid_entry->resp_buf)) {
+ mid_entry->multiRsp = 1;
break;
} else {
/* all parts received */
+ mid_entry->multiEnd = 1;
goto multi_t2_fnd;
}
} else {
@@ -632,9 +632,14 @@ multi_t2_fnd:
wake_up_process(task_to_wake);
} else if ((is_valid_oplock_break(smb_buffer, server) == FALSE)
&& (isMultiRsp == FALSE)) {
- cERROR(1, ("No task to wake, unknown frame rcvd!"));
+ cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter));
cifs_dump_mem("Received Data is: ",(char *)smb_buffer,
sizeof(struct smb_hdr));
+#ifdef CONFIG_CIFS_DEBUG2
+ cifs_dump_detail(smb_buffer);
+ cifs_dump_mids(server);
+#endif /* CIFS_DEBUG2 */
+
}
} /* end while !EXITING */
@@ -976,7 +981,7 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
}
/* BB are there cases in which a comma can be valid in
a domain name and need special handling? */
- if (strnlen(value, 65) < 65) {
+ if (strnlen(value, 256) < 256) {
vol->domainname = value;
cFYI(1, ("Domain name set"));
} else {
@@ -1762,9 +1767,14 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
if (volume_info.username)
strncpy(pSesInfo->userName,
volume_info.username,MAX_USERNAME_SIZE);
- if (volume_info.domainname)
- strncpy(pSesInfo->domainName,
- volume_info.domainname,MAX_USERNAME_SIZE);
+ if (volume_info.domainname) {
+ int len = strlen(volume_info.domainname);
+ pSesInfo->domainName =
+ kmalloc(len + 1, GFP_KERNEL);
+ if(pSesInfo->domainName)
+ strcpy(pSesInfo->domainName,
+ volume_info.domainname);
+ }
pSesInfo->linux_uid = volume_info.linux_uid;
down(&pSesInfo->sesSem);
rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls);
@@ -2054,7 +2064,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
}
if(user == NULL)
- bytes_returned = 0; /* skill null user */
+ bytes_returned = 0; /* skip null user */
else
bytes_returned =
cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
@@ -2635,8 +2645,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
/* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128;
if(sign_CIFS_PDUs)
negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN;
- if(ntlmv2_support)
- negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
+/* if(ntlmv2_support)
+ negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/
/* setup pointers to domain name and workstation name */
bcc_ptr += SecurityBlobLength;
@@ -3429,7 +3439,10 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
}
/* else do not bother copying these informational fields */
}
- tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
+ if(smb_buffer_response->WordCount == 3)
+ tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
+ else
+ tcon->Flags = 0;
cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags));
} else if ((rc == 0) && tcon == NULL) {
/* all we need to save for IPC$ connection */
@@ -3528,8 +3541,8 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
pSesInfo->server->timeZone));
#ifdef CONFIG_CIFS_EXPERIMENTAL
if(experimEnabled > 1)
- rc = CIFS_SessSetup(xid, pSesInfo, CIFS_NTLM /* type */,
- &ntlmv2_flag, nls_info);
+ rc = CIFS_SessSetup(xid, pSesInfo,
+ first_time, nls_info);
else
#endif
if (extended_security
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 57bdf7f734bf..e6ed64e94b7b 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -113,7 +113,7 @@ cifs_bp_rename_retry:
full_path[namelen+2] = 0;
BB remove above eight lines BB */
-/* Inode operations in similar order to how they appear in the Linux file fs.h */
+/* Inode operations in similar order to how they appear in Linux file fs.h */
int
cifs_create(struct inode *inode, struct dentry *direntry, int mode,
diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c
index 633a93811328..d91a3d44e9e3 100644
--- a/fs/cifs/fcntl.c
+++ b/fs/cifs/fcntl.c
@@ -91,14 +91,14 @@ int cifs_dir_notify(struct file * file, unsigned long arg)
if(full_path == NULL) {
rc = -ENOMEM;
} else {
- cERROR(1,("cifs dir notify on file %s with arg 0x%lx",full_path,arg)); /* BB removeme BB */
+ cFYI(1,("dir notify on file %s Arg 0x%lx",full_path,arg));
rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
GENERIC_READ | SYNCHRONIZE, 0 /* create options */,
&netfid, &oplock,NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
/* BB fixme - add this handle to a notify handle list */
if(rc) {
- cERROR(1,("Could not open directory for notify")); /* BB remove BB */
+ cFYI(1,("Could not open directory for notify"));
} else {
filter = convert_to_cifs_notify_flags(arg);
if(filter != 0) {
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 77a9e2f912fd..a609d2668032 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1121,7 +1121,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
xid = GetXid();
- cFYI(1, ("In cifs_setattr, name = %s attrs->iavalid 0x%x",
+ cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
direntry->d_name.name, attrs->ia_valid));
cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
@@ -1157,6 +1157,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
when the local oplock break takes longer to flush
writebehind data than the SMB timeout for the SetPathInfo
request would allow */
+
open_file = find_writable_file(cifsInode);
if (open_file) {
__u16 nfid = open_file->netfid;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index fafd056426e4..22c937e5884f 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -101,6 +101,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
kfree(buf_to_free->password);
+ kfree(buf_to_free->domainName);
kfree(buf_to_free);
}
@@ -499,11 +500,12 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
if(pSMBr->ByteCount > sizeof(struct file_notify_information)) {
data_offset = le32_to_cpu(pSMBr->DataOffset);
- pnotify = (struct file_notify_information *)((char *)&pSMBr->hdr.Protocol
- + data_offset);
- cFYI(1,("dnotify on %s with action: 0x%x",pnotify->FileName,
+ pnotify = (struct file_notify_information *)
+ ((char *)&pSMBr->hdr.Protocol + data_offset);
+ cFYI(1,("dnotify on %s Action: 0x%x",pnotify->FileName,
pnotify->Action)); /* BB removeme BB */
- /* cifs_dump_mem("Received notify Data is: ",buf,sizeof(struct smb_hdr)+60); */
+ /* cifs_dump_mem("Rcvd notify Data: ",buf,
+ sizeof(struct smb_hdr)+60); */
return TRUE;
}
if(pSMBr->hdr.Status.CifsError) {
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 6b36c43d38f5..53903a27f786 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -31,8 +31,8 @@
#include "cifs_fs_sb.h"
#include "cifsfs.h"
-/* BB fixme - add debug wrappers around this function to disable it fixme BB */
-/* static void dump_cifs_file_struct(struct file *file, char *label)
+#ifdef CONFIG_CIFS_DEBUG2
+static void dump_cifs_file_struct(struct file *file, char *label)
{
struct cifsFileInfo * cf;
@@ -53,7 +53,8 @@
}
}
-} */
+}
+#endif /* DEBUG2 */
/* Returns one if new inode created (which therefore needs to be hashed) */
/* Might check in the future if inode number changed so we can rehash inode */
@@ -597,7 +598,9 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
. and .. for the root of a drive and for those we need
to start two entries earlier */
-/* dump_cifs_file_struct(file, "In fce ");*/
+#ifdef CONFIG_CIFS_DEBUG2
+ dump_cifs_file_struct(file, "In fce ");
+#endif
if(((index_to_find < cifsFile->srch_inf.index_of_last_entry) &&
is_dir_changed(file)) ||
(index_to_find < first_entry_in_buffer)) {
@@ -980,9 +983,10 @@ int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
rc = cifs_filldir(current_entry, file,
filldir, direntry,tmp_buf);
file->f_pos++;
- if(file->f_pos == cifsFile->srch_inf.index_of_last_entry) {
+ if(file->f_pos ==
+ cifsFile->srch_inf.index_of_last_entry) {
cFYI(1,("last entry in buf at pos %lld %s",
- file->f_pos,tmp_buf)); /* BB removeme BB */
+ file->f_pos,tmp_buf));
cifs_save_resume_key(current_entry,cifsFile);
break;
} else
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
new file mode 100644
index 000000000000..34998416eb73
--- /dev/null
+++ b/fs/cifs/sess.c
@@ -0,0 +1,511 @@
+/*
+ * fs/cifs/sess.c
+ *
+ * SMB/CIFS session setup handling routines
+ *
+ * Copyright (c) International Business Machines Corp., 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 "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_unicode.h"
+#include "cifs_debug.h"
+#include "ntlmssp.h"
+#include "nterr.h"
+#include <linux/ctype.h>
+
+extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
+ unsigned char *p24);
+
+extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
+ unsigned char *p24);
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+
+static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
+{
+ __u32 capabilities = 0;
+
+ /* init fields common to all four types of SessSetup */
+ /* note that header is initialized to zero in header_assemble */
+ pSMB->req.AndXCommand = 0xFF;
+ pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
+ pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
+
+ /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
+
+ /* 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))
+ pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+
+ if (ses->capabilities & CAP_UNICODE) {
+ pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE;
+ capabilities |= CAP_UNICODE;
+ }
+ if (ses->capabilities & CAP_STATUS32) {
+ pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS;
+ capabilities |= CAP_STATUS32;
+ }
+ if (ses->capabilities & CAP_DFS) {
+ pSMB->req.hdr.Flags2 |= SMBFLG2_DFS;
+ capabilities |= CAP_DFS;
+ }
+ 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)
+{
+ 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) {
+ *bcc_ptr = 0;
+ bcc_ptr++;
+ }
+ /* 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 */
+ 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 */
+
+ *pbcc_area = bcc_ptr;
+}
+
+void ascii_ssetup_strings(char ** pbcc_area, struct cifsSesInfo *ses,
+ const struct nls_table * nls_cp)
+{
+ 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);
+ }
+ /* BB improve check for overflow */
+ bcc_ptr += strnlen(ses->userName, 200);
+ *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 += strnlen(ses->domainName, 256);
+ }
+ *bcc_ptr = 0;
+ bcc_ptr++;
+
+ /* BB check for overflow here */
+
+ 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, CIFS_NETWORK_OPSYS);
+ bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
+
+ *pbcc_area = bcc_ptr;
+}
+
+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;
+
+
+
+ cFYI(1,("bleft %d",bleft));
+
+
+ /* word align, if bytes remaining is not even */
+ if(bleft % 2) {
+ bleft--;
+ data++;
+ }
+ words_left = bleft / 2;
+
+ /* save off server operating system */
+ len = UniStrnlen((wchar_t *) data, words_left);
+
+/* 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)
+ return rc;
+
+ if(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);
+ }
+ 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)
+ return rc;
+
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
+ ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
+ 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"));
+ 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));
+
+ return rc;
+}
+
+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;
+
+ cFYI(1,("decode sessetup ascii. bleft %d", bleft));
+
+ len = strnlen(bcc_ptr, bleft);
+ if(len >= bleft)
+ return rc;
+
+ if(ses->serverOS)
+ kfree(ses->serverOS);
+
+ ses->serverOS = 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;
+
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
+
+ ses->serverNOS = kzalloc(len + 1, GFP_KERNEL);
+ 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;
+
+ cFYI(1,("ascii: bytes left %d",bleft));
+
+ return rc;
+}
+
+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;
+ SESSION_SETUP_ANDX *pSMB;
+ __u32 capabilities;
+ int count;
+ int resp_buf_type = 0;
+ struct kvec iov[1];
+ enum securityEnum type;
+ __u16 action;
+ int bytes_remaining;
+
+ if(ses == NULL)
+ return -EINVAL;
+
+ type = ses->server->secType;
+ 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
+ build) and turned on at runtime (changed from the default)
+ in proc/fs/cifs or via mount parm. Unfortunately this is
+ needed for old Win (e.g. Win95), some obscure NAS and OS/2 */
+ return -EOPNOTSUPP;
+#endif
+ wct = 10; /* lanman 2 style sessionsetup */
+ } else if(type == NTLM) /* NTLMv2 may retry NTLM */
+ wct = 13; /* old style NTLM sessionsetup */
+ else /* same size for 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)
+ return rc;
+
+ pSMB = (SESSION_SETUP_ANDX *)smb_buf;
+
+ capabilities = cifs_ssetup_hdr(ses, pSMB);
+ bcc_ptr = pByteArea(smb_buf);
+
+ if(type == LANMAN) {
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+ char lnm_session_key[CIFS_SESSION_KEY_SIZE];
+ char password_with_pad[CIFS_ENCPWD_SIZE];
+
+ /* no capabilities flags in old lanman negotiation */
+
+ pSMB->old_req.PasswordLength = CIFS_SESSION_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;
+
+ /* 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"));
+ /* Unicode not allowed for LANMAN dialects */
+ ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
+#endif
+ } else if (type == NTLM) {
+ char ntlm_session_key[CIFS_SESSION_KEY_SIZE];
+
+ pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
+ pSMB->req_no_secext.CaseInsensitivePasswordLength =
+ cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+ pSMB->req_no_secext.CaseSensitivePasswordLength =
+ cpu_to_le16(CIFS_SESSION_KEY_SIZE);
+
+ /* calculate session key */
+ SMBNTencrypt(ses->password, ses->server->cryptKey,
+ ntlm_session_key);
+
+ if(first_time) /* should this be moved into common code
+ with similar ntlmv2 path? */
+ 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)
+ unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
+ else
+ ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
+ } else /* NTLMSSP or SPNEGO */ {
+ pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
+ capabilities |= CAP_EXTENDED_SECURITY;
+ pSMB->req.Capabilities = cpu_to_le32(capabilities);
+ /* BB set password lengths */
+ }
+
+ count = (long) bcc_ptr - (long) pByteArea(smb_buf);
+ smb_buf->smb_buf_length += count;
+
+ /* if we switch to small buffers, count will need to be fewer
+ than 383 (strings less than 335 bytes) */
+
+ 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);
+ /* SMB request buf freed in SendReceive2 */
+
+ 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)) {
+ rc = -EIO;
+ 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? */
+ 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 */
+ /* and lanman response is 3 */
+ bytes_remaining = BCC(smb_buf);
+ bcc_ptr = pByteArea(smb_buf);
+
+ 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));
+ rc = -EINVAL;
+ goto ssetup_exit;
+ }
+ bytes_remaining -= blob_len;
+ }
+
+ /* BB check if Unicode and decode strings */
+ 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);
+
+ssetup_exit:
+ 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)
+ cifs_buf_release(iov[0].iov_base);
+
+ return rc;
+}
+#endif /* CONFIG_CIFS_EXPERIMENTAL */
diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c
index 6103bcdfb16d..f518c5e45035 100644
--- a/fs/cifs/smbencrypt.c
+++ b/fs/cifs/smbencrypt.c
@@ -30,6 +30,7 @@
#include <linux/random.h>
#include "cifs_unicode.h"
#include "cifspdu.h"
+#include "cifsglob.h"
#include "md5.h"
#include "cifs_debug.h"
#include "cifsencrypt.h"
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 02:48:40 +0000