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path: root/fs/cifs/connect.c
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Diffstat (limited to 'fs/cifs/connect.c')
-rw-r--r--fs/cifs/connect.c97
1 files changed, 88 insertions, 9 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index d2ec806a4f3..bae1479318d 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2148,6 +2148,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL);
if(ses->serverOS == NULL)
goto sesssetup_nomem;
@@ -2160,6 +2162,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *)bcc_ptr,
remaining_words-1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL);
if(ses->serverNOS == NULL)
goto sesssetup_nomem;
@@ -2177,6 +2181,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
/* last string is not always null terminated (for e.g. for Windows XP & 2000) */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2*(len+1),GFP_KERNEL);
if(ses->serverDomain == NULL)
@@ -2187,15 +2193,22 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ }
} else { /* no room so create dummy domain and NOS string */
/* if these kcallocs fail not much we
can do, but better to not fail the
sesssetup itself */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2, GFP_KERNEL);
}
@@ -2204,6 +2217,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverOS == NULL)
goto sesssetup_nomem;
@@ -2214,6 +2229,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverNOS == NULL)
goto sesssetup_nomem;
@@ -2223,6 +2240,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverDomain == NULL)
goto sesssetup_nomem;
@@ -2427,6 +2446,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -2441,6 +2462,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
len = UniStrnlen((wchar_t *)bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -2454,7 +2477,9 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
remaining_words -= len + 1;
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
- /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
+ /* last string not null terminated (e.g.Windows XP/2000) */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL);
cifs_strfromUCS_le(ses->serverDomain,
(__le16 *)bcc_ptr,
@@ -2463,11 +2488,18 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2,GFP_KERNEL);
- } else { /* no room so create dummy domain and NOS string */
+ }
+ } else {/* no room use dummy domain&NOS */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2, GFP_KERNEL);
}
} else { /* ASCII */
@@ -2476,6 +2508,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
strncpy(ses->serverOS, bcc_ptr, len);
@@ -2484,6 +2518,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
strncpy(ses->serverNOS, bcc_ptr, len);
bcc_ptr += len;
@@ -2491,6 +2527,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len + 1, GFP_KERNEL);
strncpy(ses->serverDomain, bcc_ptr, len);
bcc_ptr += len;
@@ -2728,6 +2766,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
/* 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(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -2743,6 +2783,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -2760,6 +2802,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
/* last string is not always null terminated (for e.g. for Windows XP & 2000) */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2 *
(len +
@@ -2777,13 +2821,20 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
[1 + (2 * len)]
= 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2,
GFP_KERNEL);
+ }
} else { /* no room so create dummy domain and NOS string */
+ if(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2, GFP_KERNEL);
}
@@ -2792,6 +2843,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(len + 1,
GFP_KERNEL);
@@ -2803,6 +2856,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(len + 1,
GFP_KERNEL);
@@ -2812,6 +2867,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(len + 1,
GFP_KERNEL);
@@ -3116,6 +3173,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -3131,6 +3190,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -3147,6 +3208,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
/* last string not always null terminated (e.g. for Windows XP & 2000) */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2 *
(len +
@@ -3172,10 +3235,17 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
len)]
= 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2,GFP_KERNEL);
+ }
} else { /* no room so create dummy domain and NOS string */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2, GFP_KERNEL);
}
} else { /* ASCII */
@@ -3183,6 +3253,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) -
(long) pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
strncpy(ses->serverOS,bcc_ptr, len);
@@ -3191,6 +3263,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len+1,GFP_KERNEL);
strncpy(ses->serverNOS, bcc_ptr, len);
bcc_ptr += len;
@@ -3198,6 +3272,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len+1,GFP_KERNEL);
strncpy(ses->serverDomain, bcc_ptr, len);
bcc_ptr += len;
@@ -3282,7 +3358,8 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++; /* align */
}
- if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ if(ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
if (ses->capabilities & CAP_STATUS32) {
@@ -3294,8 +3371,10 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
if (ses->capabilities & CAP_UNICODE) {
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
length =
- cifs_strtoUCS((__le16 *) bcc_ptr, tree, 100, nls_codepage);
- bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */
+ cifs_strtoUCS((__le16 *) bcc_ptr, tree,
+ 6 /* max utf8 char length in bytes */ *
+ (/* server len*/ + 256 /* share len */), nls_codepage);
+ bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */
bcc_ptr += 2; /* skip trailing null */
} else { /* ASCII */
strcpy(bcc_ptr, tree);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 16:39:53 +0000