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Diffstat (limited to 'source3/smbd/sesssetup.c')
-rw-r--r--source3/smbd/sesssetup.c119
1 files changed, 70 insertions, 49 deletions
diff --git a/source3/smbd/sesssetup.c b/source3/smbd/sesssetup.c
index 867b00ff5c..77f93812dd 100644
--- a/source3/smbd/sesssetup.c
+++ b/source3/smbd/sesssetup.c
@@ -3,6 +3,7 @@
handle SMBsessionsetup
Copyright (C) Andrew Tridgell 1998-2001
Copyright (C) Andrew Bartlett 2001
+ Copyright (C) Jim McDonough 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -122,6 +123,12 @@ static int reply_spnego_kerberos(connection_struct *conn,
ads = ads_init_simple();
+ if (!ads) {
+ return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ }
+
+ ads->auth.realm = strdup(lp_realm());
+
ret = ads_verify_ticket(ads, &ticket, &client, &auth_data);
if (!NT_STATUS_IS_OK(ret)) {
DEBUG(1,("Failed to verify incoming ticket!\n"));
@@ -139,7 +146,7 @@ static int reply_spnego_kerberos(connection_struct *conn,
}
*p = 0;
- if (strcasecmp(p+1, ads->realm) != 0) {
+ if (strcasecmp(p+1, ads->auth.realm) != 0) {
DEBUG(3,("Ticket for foreign realm %s@%s\n", client, p+1));
if (!lp_allow_trusted_domains()) {
return ERROR_NT(NT_STATUS_LOGON_FAILURE);
@@ -200,7 +207,7 @@ static int reply_spnego_kerberos(connection_struct *conn,
send a security blob via a session setup reply
****************************************************************************/
static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf,
- DATA_BLOB blob)
+ DATA_BLOB blob, uint32 errcode)
{
char *p;
@@ -209,7 +216,7 @@ static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf,
/* we set NT_STATUS_MORE_PROCESSING_REQUIRED to tell the other end
that we aren't finished yet */
- SIVAL(outbuf, smb_rcls, NT_STATUS_V(NT_STATUS_MORE_PROCESSING_REQUIRED));
+ SIVAL(outbuf, smb_rcls, errcode);
SSVAL(outbuf, smb_vwv0, 0xFF); /* no chaining possible */
SSVAL(outbuf, smb_vwv3, blob.length);
p = smb_buf(outbuf);
@@ -236,11 +243,12 @@ static int reply_spnego_negotiate(connection_struct *conn,
DATA_BLOB secblob;
int i;
uint32 ntlmssp_command, neg_flags, chal_flags;
- DATA_BLOB chal, spnego_chal, extra_data;
+ DATA_BLOB chal, spnego_chal;
const uint8 *cryptkey;
BOOL got_kerberos = False;
NTSTATUS nt_status;
extern pstring global_myname;
+ char *cliname=NULL, *domname=NULL;
/* parse out the OIDs and the first sec blob */
if (!parse_negTokenTarg(blob1, OIDs, &secblob)) {
@@ -258,7 +266,7 @@ static int reply_spnego_negotiate(connection_struct *conn,
DEBUG(3,("Got secblob of size %d\n", secblob.length));
#ifdef HAVE_KRB5
- if (got_kerberos) {
+ if (got_kerberos && (SEC_ADS == lp_security())) {
int ret = reply_spnego_kerberos(conn, inbuf, outbuf,
length, bufsize, &secblob);
data_blob_free(&secblob);
@@ -271,19 +279,16 @@ static int reply_spnego_negotiate(connection_struct *conn,
file_save("secblob.dat", secblob.data, secblob.length);
#endif
- if (!msrpc_parse(&secblob, "CddB",
+ if (!msrpc_parse(&secblob, "CddAA",
"NTLMSSP",
&ntlmssp_command,
&neg_flags,
- &extra_data)) {
+ &cliname,
+ &domname)) {
return ERROR_NT(NT_STATUS_LOGON_FAILURE);
}
- DEBUG(5, ("Extra data: \n"));
- dump_data(5, extra_data.data, extra_data.length);
-
data_blob_free(&secblob);
- data_blob_free(&extra_data);
if (ntlmssp_command != NTLMSSP_NEGOTIATE) {
return ERROR_NT(NT_STATUS_LOGON_FAILURE);
@@ -307,41 +312,44 @@ static int reply_spnego_negotiate(connection_struct *conn,
return the flags we want. Obviously this is not correct */
chal_flags = NTLMSSP_NEGOTIATE_UNICODE |
- NTLMSSP_NEGOTIATE_LM_KEY |
+ NTLMSSP_NEGOTIATE_128 |
NTLMSSP_NEGOTIATE_NTLM |
NTLMSSP_CHAL_TARGET_INFO;
{
- DATA_BLOB domain_blob, netbios_blob, realm_blob;
+ DATA_BLOB domain_blob, struct_blob;
+ fstring dnsname, dnsdomname;
msrpc_gen(&domain_blob,
"U",
lp_workgroup());
- msrpc_gen(&netbios_blob,
- "U",
- global_myname);
-
- msrpc_gen(&realm_blob,
- "U",
- lp_realm());
-
+ fstrcpy(dnsdomname, lp_realm());
+ strlower(dnsdomname);
+
+ fstrcpy(dnsname, global_myname);
+ fstrcat(dnsname, ".");
+ fstrcat(dnsname, lp_realm());
+ strlower(dnsname);
- msrpc_gen(&chal, "CddddbBBBB",
+ msrpc_gen(&struct_blob, "aaaaa",
+ 2, lp_workgroup(),
+ 1, global_myname,
+ 4, dnsdomname,
+ 3, dnsname,
+ 0, "");
+
+ msrpc_gen(&chal, "CdUdbddB",
"NTLMSSP",
NTLMSSP_CHALLENGE,
- 0,
- 0x30, /* ?? */
+ lp_workgroup(),
chal_flags,
cryptkey, 8,
- domain_blob.data, domain_blob.length,
- domain_blob.data, domain_blob.length,
- netbios_blob.data, netbios_blob.length,
- realm_blob.data, realm_blob.length);
+ 0, 0,
+ struct_blob.data, struct_blob.length);
data_blob_free(&domain_blob);
- data_blob_free(&netbios_blob);
- data_blob_free(&realm_blob);
+ data_blob_free(&struct_blob);
}
if (!spnego_gen_challenge(&spnego_chal, &chal, &chal)) {
@@ -351,7 +359,7 @@ static int reply_spnego_negotiate(connection_struct *conn,
}
/* now tell the client to send the auth packet */
- reply_sesssetup_blob(conn, outbuf, spnego_chal);
+ reply_sesssetup_blob(conn, outbuf, spnego_chal, NT_STATUS_V(NT_STATUS_MORE_PROCESSING_REQUIRED));
data_blob_free(&chal);
data_blob_free(&spnego_chal);
@@ -368,7 +376,7 @@ static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
int length, int bufsize,
DATA_BLOB blob1)
{
- DATA_BLOB auth;
+ DATA_BLOB auth, response;
char *workgroup = NULL, *user = NULL, *machine = NULL;
DATA_BLOB lmhash, nthash, sess_key;
DATA_BLOB plaintext_password = data_blob(NULL, 0);
@@ -413,6 +421,13 @@ static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
DEBUG(3,("Got user=[%s] workgroup=[%s] machine=[%s] len1=%d len2=%d\n",
user, workgroup, machine, lmhash.length, nthash.length));
+ /* the client has given us its machine name (which we otherwise would not get on port 445).
+ we need to possibly reload smb.conf if smb.conf includes depend on the machine name */
+
+ set_remote_machine_name(machine);
+
+ reload_services(True);
+
#if 0
file_save("nthash1.dat", nthash.data, nthash.length);
file_save("lmhash1.dat", lmhash.data, lmhash.length);
@@ -481,8 +496,12 @@ static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
SSVAL(outbuf,smb_uid,sess_vuid);
SSVAL(inbuf,smb_uid,sess_vuid);
-
- return chain_reply(inbuf,outbuf,length,bufsize);
+
+ response = spnego_gen_auth_response();
+ reply_sesssetup_blob(conn, outbuf, response, 0);
+
+ /* and tell smbd that we have already replied to this packet */
+ return -1;
}
@@ -594,7 +613,6 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
extern BOOL global_encrypted_passwords_negotiated;
extern BOOL global_spnego_negotiated;
extern int Protocol;
- extern fstring remote_machine;
extern userdom_struct current_user_info;
extern int max_send;
@@ -630,8 +648,8 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
if (Protocol < PROTOCOL_NT1) {
uint16 passlen1 = SVAL(inbuf,smb_vwv7);
- if (passlen1 > MAX_PASS_LEN) {
- return ERROR_DOS(ERRDOS,ERRbuftoosmall);
+ if ((passlen1 > MAX_PASS_LEN) || (passlen1 > smb_bufrem(inbuf, smb_buf(inbuf)))) {
+ return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
}
if (doencrypt) {
@@ -665,13 +683,6 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
}
}
- if (passlen1 > MAX_PASS_LEN) {
- return ERROR_DOS(ERRDOS,ERRbuftoosmall);
- }
-
- passlen1 = MIN(passlen1, MAX_PASS_LEN);
- passlen2 = MIN(passlen2, MAX_PASS_LEN);
-
if (!doencrypt) {
/* both Win95 and WinNT stuff up the password lengths for
non-encrypting systems. Uggh.
@@ -689,19 +700,29 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
passlen2 = 0;
}
+ /* check for nasty tricks */
+ if (passlen1 > MAX_PASS_LEN || passlen1 > smb_bufrem(inbuf, p)) {
+ return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ }
+
+ if (passlen2 > MAX_PASS_LEN || passlen2 > smb_bufrem(inbuf, p+passlen1)) {
+ return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ }
+
/* Save the lanman2 password and the NT md4 password. */
if ((doencrypt) && (passlen1 != 0) && (passlen1 != 24)) {
doencrypt = False;
}
-
+
if (doencrypt) {
lm_resp = data_blob(p, passlen1);
nt_resp = data_blob(p+passlen1, passlen2);
} else {
- plaintext_password = data_blob(p, passlen1+1);
- /* Ensure null termination */
- plaintext_password.data[passlen1] = 0;
+ pstring pass;
+ srvstr_pull(inbuf, pass, smb_buf(inbuf),
+ sizeof(pass), passlen1, STR_TERMINATE);
+ plaintext_password = data_blob(pass, strlen(pass)+1);
}
p += passlen1 + passlen2;
@@ -720,7 +741,7 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
return ERROR_NT(NT_STATUS_LOGON_FAILURE);
}
- DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n", domain, user, remote_machine));
+ DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n", domain, user, get_remote_machine_name()));
if (*user) {
if (global_spnego_negotiated) {
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