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Diffstat (limited to 'source/smbd/sesssetup.c')
| -rw-r--r-- | source/smbd/sesssetup.c | 938 |
1 files changed, 0 insertions, 938 deletions
diff --git a/source/smbd/sesssetup.c b/source/smbd/sesssetup.c deleted file mode 100644 index b8777be6971..00000000000 --- a/source/smbd/sesssetup.c +++ /dev/null @@ -1,938 +0,0 @@ -/* - Unix SMB/CIFS implementation. - handle SMBsessionsetup - Copyright (C) Andrew Tridgell 1998-2001 - Copyright (C) Andrew Bartlett 2001 - Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002 - Copyright (C) Luke Howard 2003 - - 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 - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "includes.h" - -uint32 global_client_caps = 0; - -static struct auth_ntlmssp_state *global_ntlmssp_state; - -/* - on a logon error possibly map the error to success if "map to guest" - is set approriately -*/ -static NTSTATUS do_map_to_guest(NTSTATUS status, auth_serversupplied_info **server_info, - const char *user, const char *domain) -{ - if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) { - if ((lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_USER) || - (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD)) { - DEBUG(3,("No such user %s [%s] - using guest account\n", - user, domain)); - status = make_server_info_guest(server_info); - } - } - - if (NT_STATUS_EQUAL(status, NT_STATUS_WRONG_PASSWORD)) { - if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD) { - DEBUG(3,("Registered username %s for guest access\n",user)); - status = make_server_info_guest(server_info); - } - } - - return status; -} - -/**************************************************************************** - Add the standard 'Samba' signature to the end of the session setup. -****************************************************************************/ - -static int add_signature(char *outbuf, char *p) -{ - char *start = p; - fstring lanman; - - fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING); - - p += srvstr_push(outbuf, p, "Unix", -1, STR_TERMINATE); - p += srvstr_push(outbuf, p, lanman, -1, STR_TERMINATE); - p += srvstr_push(outbuf, p, lp_workgroup(), -1, STR_TERMINATE); - - return PTR_DIFF(p, start); -} - -/**************************************************************************** - Send a security blob via a session setup reply. -****************************************************************************/ - -static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf, - DATA_BLOB blob, NTSTATUS nt_status) -{ - char *p; - - set_message(outbuf,4,0,True); - - nt_status = nt_status_squash(nt_status); - SIVAL(outbuf, smb_rcls, NT_STATUS_V(nt_status)); - SSVAL(outbuf, smb_vwv0, 0xFF); /* no chaining possible */ - SSVAL(outbuf, smb_vwv3, blob.length); - p = smb_buf(outbuf); - - /* should we cap this? */ - memcpy(p, blob.data, blob.length); - p += blob.length; - - p += add_signature( outbuf, p ); - - set_message_end(outbuf,p); - - return send_smb(smbd_server_fd(),outbuf); -} - -/**************************************************************************** - Do a 'guest' logon, getting back the -****************************************************************************/ - -static NTSTATUS check_guest_password(auth_serversupplied_info **server_info) -{ - struct auth_context *auth_context; - auth_usersupplied_info *user_info = NULL; - - NTSTATUS nt_status; - unsigned char chal[8]; - - ZERO_STRUCT(chal); - - DEBUG(3,("Got anonymous request\n")); - - if (!NT_STATUS_IS_OK(nt_status = make_auth_context_fixed(&auth_context, chal))) { - return nt_status; - } - - if (!make_user_info_guest(&user_info)) { - (auth_context->free)(&auth_context); - return NT_STATUS_NO_MEMORY; - } - - nt_status = auth_context->check_ntlm_password(auth_context, user_info, server_info); - (auth_context->free)(&auth_context); - free_user_info(&user_info); - return nt_status; -} - - -#ifdef HAVE_KRB5 -/**************************************************************************** -reply to a session setup spnego negotiate packet for kerberos -****************************************************************************/ -static int reply_spnego_kerberos(connection_struct *conn, - char *inbuf, char *outbuf, - int length, int bufsize, - DATA_BLOB *secblob) -{ - DATA_BLOB ticket; - char *client, *p, *domain; - fstring netbios_domain_name; - struct passwd *pw; - char *user; - int sess_vuid; - NTSTATUS ret; - DATA_BLOB auth_data; - DATA_BLOB ap_rep, ap_rep_wrapped, response; - auth_serversupplied_info *server_info = NULL; - DATA_BLOB session_key; - uint8 tok_id[2]; - BOOL foreign = False; - DATA_BLOB nullblob = data_blob(NULL, 0); - fstring real_username; - - ZERO_STRUCT(ticket); - ZERO_STRUCT(auth_data); - ZERO_STRUCT(ap_rep); - ZERO_STRUCT(ap_rep_wrapped); - ZERO_STRUCT(response); - - if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) { - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - ret = ads_verify_ticket(lp_realm(), &ticket, &client, &auth_data, &ap_rep, &session_key); - - data_blob_free(&ticket); - - if (!NT_STATUS_IS_OK(ret)) { - DEBUG(1,("Failed to verify incoming ticket!\n")); - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - data_blob_free(&auth_data); - - DEBUG(3,("Ticket name is [%s]\n", client)); - - p = strchr_m(client, '@'); - if (!p) { - DEBUG(3,("Doesn't look like a valid principal\n")); - data_blob_free(&ap_rep); - SAFE_FREE(client); - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - *p = 0; - if (!strequal(p+1, lp_realm())) { - DEBUG(3,("Ticket for foreign realm %s@%s\n", client, p+1)); - if (!lp_allow_trusted_domains()) { - data_blob_free(&ap_rep); - SAFE_FREE(client); - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - foreign = True; - } - - /* this gives a fully qualified user name (ie. with full realm). - that leads to very long usernames, but what else can we do? */ - - domain = p+1; - - { - /* If we have winbind running, we can (and must) shorten the - username by using the short netbios name. Otherwise we will - have inconsistent user names. With Kerberos, we get the - fully qualified realm, with ntlmssp we get the short - name. And even w2k3 does use ntlmssp if you for example - connect to an ip address. */ - - struct winbindd_request wb_request; - struct winbindd_response wb_response; - NSS_STATUS wb_result; - - ZERO_STRUCT(wb_request); - ZERO_STRUCT(wb_response); - - DEBUG(10, ("Mapping [%s] to short name\n", domain)); - - fstrcpy(wb_request.domain_name, domain); - - wb_result = winbindd_request(WINBINDD_DOMAIN_INFO, - &wb_request, &wb_response); - - if (wb_result == NSS_STATUS_SUCCESS) { - - fstrcpy(netbios_domain_name, - wb_response.data.domain_info.name); - domain = netbios_domain_name; - - DEBUG(10, ("Mapped to [%s]\n", domain)); - } else { - DEBUG(3, ("Could not find short name -- winbind " - "not running?\n")); - } - } - - asprintf(&user, "%s%c%s", domain, *lp_winbind_separator(), client); - - /* lookup the passwd struct, create a new user if necessary */ - - pw = smb_getpwnam( user, real_username, True ); - - if (!pw) { - DEBUG(1,("Username %s is invalid on this system\n",user)); - SAFE_FREE(user); - SAFE_FREE(client); - data_blob_free(&ap_rep); - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - /* setup the string used by %U */ - - sub_set_smb_name( real_username ); - reload_services(True); - - if (!NT_STATUS_IS_OK(ret = make_server_info_pw(&server_info, real_username, pw))) - { - DEBUG(1,("make_server_info_from_pw failed!\n")); - SAFE_FREE(user); - SAFE_FREE(client); - data_blob_free(&ap_rep); - return ERROR_NT(ret); - } - - /* make_server_info_pw does not set the domain. Without this we end up - * with the local netbios name in substitutions for %D. */ - - if (server_info->sam_account != NULL) { - pdb_set_domain(server_info->sam_account, domain, PDB_SET); - } - - /* register_vuid keeps the server info */ - sess_vuid = register_vuid(server_info, session_key, nullblob, client); - - SAFE_FREE(user); - SAFE_FREE(client); - - if (sess_vuid == -1) { - ret = NT_STATUS_LOGON_FAILURE; - } else { - /* current_user_info is changed on new vuid */ - reload_services( True ); - - set_message(outbuf,4,0,True); - SSVAL(outbuf, smb_vwv3, 0); - - if (server_info->guest) { - SSVAL(outbuf,smb_vwv2,1); - } - - SSVAL(outbuf, smb_uid, sess_vuid); - - if (!server_info->guest && !srv_signing_started()) { - /* We need to start the signing engine - * here but a W2K client sends the old - * "BSRSPYL " signature instead of the - * correct one. Subsequent packets will - * be correct. - */ - srv_check_sign_mac(inbuf, False); - } - } - - /* wrap that up in a nice GSS-API wrapping */ - if (NT_STATUS_IS_OK(ret)) { - ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep, TOK_ID_KRB_AP_REP); - } else { - ap_rep_wrapped = data_blob(NULL, 0); - } - response = spnego_gen_auth_response(&ap_rep_wrapped, ret, OID_KERBEROS5_OLD); - reply_sesssetup_blob(conn, outbuf, response, ret); - - data_blob_free(&ap_rep); - data_blob_free(&ap_rep_wrapped); - data_blob_free(&response); - - return -1; /* already replied */ -} -#endif - -/**************************************************************************** - Send a session setup reply, wrapped in SPNEGO. - Get vuid and check first. - End the NTLMSSP exchange context if we are OK/complete fail -***************************************************************************/ - -static BOOL reply_spnego_ntlmssp(connection_struct *conn, char *inbuf, char *outbuf, - AUTH_NTLMSSP_STATE **auth_ntlmssp_state, - DATA_BLOB *ntlmssp_blob, NTSTATUS nt_status) -{ - BOOL ret; - DATA_BLOB response; - struct auth_serversupplied_info *server_info = NULL; - - if (NT_STATUS_IS_OK(nt_status)) { - server_info = (*auth_ntlmssp_state)->server_info; - } else { - nt_status = do_map_to_guest(nt_status, - &server_info, - (*auth_ntlmssp_state)->ntlmssp_state->user, - (*auth_ntlmssp_state)->ntlmssp_state->domain); - } - - if (NT_STATUS_IS_OK(nt_status)) { - int sess_vuid; - DATA_BLOB nullblob = data_blob(NULL, 0); - DATA_BLOB session_key = data_blob((*auth_ntlmssp_state)->ntlmssp_state->session_key.data, (*auth_ntlmssp_state)->ntlmssp_state->session_key.length); - - /* register_vuid keeps the server info */ - sess_vuid = register_vuid(server_info, session_key, nullblob, (*auth_ntlmssp_state)->ntlmssp_state->user); - (*auth_ntlmssp_state)->server_info = NULL; - - if (sess_vuid == -1) { - nt_status = NT_STATUS_LOGON_FAILURE; - } else { - - /* current_user_info is changed on new vuid */ - reload_services( True ); - - set_message(outbuf,4,0,True); - SSVAL(outbuf, smb_vwv3, 0); - - if (server_info->guest) { - SSVAL(outbuf,smb_vwv2,1); - } - - SSVAL(outbuf,smb_uid,sess_vuid); - - if (!server_info->guest && !srv_signing_started()) { - /* We need to start the signing engine - * here but a W2K client sends the old - * "BSRSPYL " signature instead of the - * correct one. Subsequent packets will - * be correct. - */ - - srv_check_sign_mac(inbuf, False); - } - } - } - - response = spnego_gen_auth_response(ntlmssp_blob, nt_status, OID_NTLMSSP); - ret = reply_sesssetup_blob(conn, outbuf, response, nt_status); - data_blob_free(&response); - - /* NT_STATUS_MORE_PROCESSING_REQUIRED from our NTLMSSP code tells us, - and the other end, that we are not finished yet. */ - - if (!ret || !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) { - auth_ntlmssp_end(auth_ntlmssp_state); - } - - return ret; -} - -/**************************************************************************** - Reply to a session setup spnego negotiate packet. -****************************************************************************/ - -static int reply_spnego_negotiate(connection_struct *conn, - char *inbuf, - char *outbuf, - int length, int bufsize, - DATA_BLOB blob1) -{ - char *OIDs[ASN1_MAX_OIDS]; - DATA_BLOB secblob; - int i; - DATA_BLOB chal; - BOOL got_kerberos = False; - NTSTATUS nt_status; - - /* parse out the OIDs and the first sec blob */ - if (!parse_negTokenTarg(blob1, OIDs, &secblob)) { - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - /* only look at the first OID for determining the mechToken -- - accoirding to RFC2478, we should choose the one we want - and renegotiate, but i smell a client bug here.. - - Problem observed when connecting to a member (samba box) - of an AD domain as a user in a Samba domain. Samba member - server sent back krb5/mskrb5/ntlmssp as mechtypes, but the - client (2ksp3) replied with ntlmssp/mskrb5/krb5 and an - NTLMSSP mechtoken. --jerry */ - - if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || - strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) { - got_kerberos = True; - } - - for (i=0;OIDs[i];i++) { - DEBUG(3,("Got OID %s\n", OIDs[i])); - free(OIDs[i]); - } - DEBUG(3,("Got secblob of size %lu\n", (unsigned long)secblob.length)); - -#ifdef HAVE_KRB5 - if (got_kerberos && (SEC_ADS == lp_security())) { - int ret = reply_spnego_kerberos(conn, inbuf, outbuf, - length, bufsize, &secblob); - data_blob_free(&secblob); - return ret; - } -#endif - - if (global_ntlmssp_state) { - auth_ntlmssp_end(&global_ntlmssp_state); - } - - nt_status = auth_ntlmssp_start(&global_ntlmssp_state); - if (!NT_STATUS_IS_OK(nt_status)) { - return ERROR_NT(nt_status); - } - - nt_status = auth_ntlmssp_update(global_ntlmssp_state, - secblob, &chal); - - data_blob_free(&secblob); - - reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state, - &chal, nt_status); - - data_blob_free(&chal); - - /* already replied */ - return -1; -} - -/**************************************************************************** - Reply to a session setup spnego auth packet. -****************************************************************************/ - -static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf, - int length, int bufsize, - DATA_BLOB blob1) -{ - DATA_BLOB auth, auth_reply; - NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER; - - if (!spnego_parse_auth(blob1, &auth)) { -#if 0 - file_save("auth.dat", blob1.data, blob1.length); -#endif - return ERROR_NT(NT_STATUS_INVALID_PARAMETER); - } - - if (!global_ntlmssp_state) { - /* auth before negotiatiate? */ - return ERROR_NT(NT_STATUS_INVALID_PARAMETER); - } - - nt_status = auth_ntlmssp_update(global_ntlmssp_state, - auth, &auth_reply); - - data_blob_free(&auth); - - reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state, - &auth_reply, nt_status); - - data_blob_free(&auth_reply); - - /* and tell smbd that we have already replied to this packet */ - return -1; -} - -/**************************************************************************** - Reply to a session setup command. -****************************************************************************/ - -static int reply_sesssetup_and_X_spnego(connection_struct *conn, char *inbuf, - char *outbuf, - int length,int bufsize) -{ - uint8 *p; - DATA_BLOB blob1; - int ret; - size_t bufrem; - fstring native_os, native_lanman, primary_domain; - char *p2; - uint16 data_blob_len = SVAL(inbuf, smb_vwv7); - enum remote_arch_types ra_type = get_remote_arch(); - - DEBUG(3,("Doing spnego session setup\n")); - - if (global_client_caps == 0) { - global_client_caps = IVAL(inbuf,smb_vwv10); - - if (!(global_client_caps & CAP_STATUS32)) { - remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES); - } - - } - - p = (uint8 *)smb_buf(inbuf); - - if (data_blob_len == 0) { - /* an invalid request */ - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - bufrem = smb_bufrem(inbuf, p); - /* pull the spnego blob */ - blob1 = data_blob(p, MIN(bufrem, data_blob_len)); - -#if 0 - file_save("negotiate.dat", blob1.data, blob1.length); -#endif - - p2 = inbuf + smb_vwv13 + data_blob_len; - p2 += srvstr_pull_buf(inbuf, native_os, p2, sizeof(native_os), STR_TERMINATE); - p2 += srvstr_pull_buf(inbuf, native_lanman, p2, sizeof(native_lanman), STR_TERMINATE); - p2 += srvstr_pull_buf(inbuf, primary_domain, p2, sizeof(primary_domain), STR_TERMINATE); - DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n", - native_os, native_lanman, primary_domain)); - - if ( ra_type == RA_WIN2K ) { - /* Windows 2003 doesn't set the native lanman string, - but does set primary domain which is a bug I think */ - - if ( !strlen(native_lanman) ) - ra_lanman_string( primary_domain ); - else - ra_lanman_string( native_lanman ); - } - - if (blob1.data[0] == ASN1_APPLICATION(0)) { - /* its a negTokenTarg packet */ - ret = reply_spnego_negotiate(conn, inbuf, outbuf, length, bufsize, blob1); - data_blob_free(&blob1); - return ret; - } - - if (blob1.data[0] == ASN1_CONTEXT(1)) { - /* its a auth packet */ - ret = reply_spnego_auth(conn, inbuf, outbuf, length, bufsize, blob1); - data_blob_free(&blob1); - return ret; - } - - /* what sort of packet is this? */ - DEBUG(1,("Unknown packet in reply_sesssetup_and_X_spnego\n")); - - data_blob_free(&blob1); - - return ERROR_NT(NT_STATUS_LOGON_FAILURE); -} - -/**************************************************************************** - On new VC == 0, shutdown *all* old connections and users. - It seems that only NT4.x does this. At W2K and above (XP etc.). - a new session setup with VC==0 is ignored. -****************************************************************************/ - -static void setup_new_vc_session(void) -{ - DEBUG(2,("setup_new_vc_session: New VC == 0, if NT4.x compatible we would close all old resources.\n")); -#if 0 - conn_close_all(); - invalidate_all_vuids(); -#endif -} - -/**************************************************************************** - Reply to a session setup command. -****************************************************************************/ - -int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf, - int length,int bufsize) -{ - int sess_vuid; - int smb_bufsize; - DATA_BLOB lm_resp; - DATA_BLOB nt_resp; - DATA_BLOB plaintext_password; - fstring user; - fstring sub_user; /* Sainitised username for substituion */ - fstring domain; - fstring native_os; - fstring native_lanman; - fstring primary_domain; - static BOOL done_sesssetup = False; - extern BOOL global_encrypted_passwords_negotiated; - extern BOOL global_spnego_negotiated; - extern int Protocol; - extern int max_send; - - auth_usersupplied_info *user_info = NULL; - extern struct auth_context *negprot_global_auth_context; - auth_serversupplied_info *server_info = NULL; - - NTSTATUS nt_status; - - BOOL doencrypt = global_encrypted_passwords_negotiated; - - DATA_BLOB session_key; - - START_PROFILE(SMBsesssetupX); - - ZERO_STRUCT(lm_resp); - ZERO_STRUCT(nt_resp); - ZERO_STRUCT(plaintext_password); - - DEBUG(3,("wct=%d flg2=0x%x\n", CVAL(inbuf, smb_wct), SVAL(inbuf, smb_flg2))); - - /* a SPNEGO session setup has 12 command words, whereas a normal - NT1 session setup has 13. See the cifs spec. */ - if (CVAL(inbuf, smb_wct) == 12 && - (SVAL(inbuf, smb_flg2) & FLAGS2_EXTENDED_SECURITY)) { - if (!global_spnego_negotiated) { - DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt at SPNEGO session setup when it was not negoitiated.\n")); - return ERROR_NT(NT_STATUS_UNSUCCESSFUL); - } - - if (SVAL(inbuf,smb_vwv4) == 0) { - setup_new_vc_session(); - } - return reply_sesssetup_and_X_spnego(conn, inbuf, outbuf, length, bufsize); - } - - smb_bufsize = SVAL(inbuf,smb_vwv2); - - if (Protocol < PROTOCOL_NT1) { - uint16 passlen1 = SVAL(inbuf,smb_vwv7); - if ((passlen1 > MAX_PASS_LEN) || (passlen1 > smb_bufrem(inbuf, smb_buf(inbuf)))) { - return ERROR_NT(NT_STATUS_INVALID_PARAMETER); - } - - if (doencrypt) { - lm_resp = data_blob(smb_buf(inbuf), passlen1); - } else { - plaintext_password = data_blob(smb_buf(inbuf), passlen1+1); - /* Ensure null termination */ - plaintext_password.data[passlen1] = 0; - } - - srvstr_pull_buf(inbuf, user, smb_buf(inbuf)+passlen1, sizeof(user), STR_TERMINATE); - *domain = 0; - - } else { - uint16 passlen1 = SVAL(inbuf,smb_vwv7); - uint16 passlen2 = SVAL(inbuf,smb_vwv8); - enum remote_arch_types ra_type = get_remote_arch(); - char *p = smb_buf(inbuf); - char *save_p = smb_buf(inbuf); - uint16 byte_count; - - - if(global_client_caps == 0) { - global_client_caps = IVAL(inbuf,smb_vwv11); - - if (!(global_client_caps & CAP_STATUS32)) { - remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES); - } - - /* client_caps is used as final determination if client is NT or Win95. - This is needed to return the correct error codes in some - circumstances. - */ - - if(ra_type == RA_WINNT || ra_type == RA_WIN2K || ra_type == RA_WIN95) { - if(!(global_client_caps & (CAP_NT_SMBS | CAP_STATUS32))) { - set_remote_arch( RA_WIN95); - } - } - } - - if (!doencrypt) { - /* both Win95 and WinNT stuff up the password lengths for - non-encrypting systems. Uggh. - - if passlen1==24 its a win95 system, and its setting the - password length incorrectly. Luckily it still works with the - default code because Win95 will null terminate the password - anyway - - if passlen1>0 and passlen2>0 then maybe its a NT box and its - setting passlen2 to some random value which really stuffs - things up. we need to fix that one. */ - - if (passlen1 > 0 && passlen2 > 0 && passlen2 != 24 && passlen2 != 1) - 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 { - pstring pass; - BOOL unic=SVAL(inbuf, smb_flg2) & FLAGS2_UNICODE_STRINGS; - - if ((ra_type == RA_WINNT) && (passlen2 == 0) && unic && passlen1) { - /* NT4.0 stuffs up plaintext unicode password lengths... */ - srvstr_pull(inbuf, pass, smb_buf(inbuf) + 1, - sizeof(pass), passlen1, STR_TERMINATE); - } else { - srvstr_pull(inbuf, pass, smb_buf(inbuf), - sizeof(pass), unic ? passlen2 : passlen1, - STR_TERMINATE); - } - plaintext_password = data_blob(pass, strlen(pass)+1); - } - - p += passlen1 + passlen2; - p += srvstr_pull_buf(inbuf, user, p, sizeof(user), STR_TERMINATE); - p += srvstr_pull_buf(inbuf, domain, p, sizeof(domain), STR_TERMINATE); - p += srvstr_pull_buf(inbuf, native_os, p, sizeof(native_os), STR_TERMINATE); - p += srvstr_pull_buf(inbuf, native_lanman, p, sizeof(native_lanman), STR_TERMINATE); - - /* not documented or decoded by Ethereal but there is one more string - in the extra bytes which is the same as the PrimaryDomain when using - extended security. Windows NT 4 and 2003 use this string to store - the native lanman string. Windows 9x does not include a string here - at all so we have to check if we have any extra bytes left */ - - byte_count = SVAL(inbuf, smb_vwv13); - if ( PTR_DIFF(p, save_p) < byte_count) - p += srvstr_pull_buf(inbuf, primary_domain, p, sizeof(primary_domain), STR_TERMINATE); - else - fstrcpy( primary_domain, "null" ); - - DEBUG(3,("Domain=[%s] NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n", - domain, native_os, native_lanman, primary_domain)); - - if ( ra_type == RA_WIN2K ) { - if ( strlen(native_lanman) == 0 ) - ra_lanman_string( primary_domain ); - else - ra_lanman_string( native_lanman ); - } - - } - - if (SVAL(inbuf,smb_vwv4) == 0) { - setup_new_vc_session(); - } - - DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n", domain, user, get_remote_machine_name())); - - if (*user) { - if (global_spnego_negotiated) { - - /* This has to be here, because this is a perfectly valid behaviour for guest logons :-( */ - - DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt at 'normal' session setup after negotiating spnego.\n")); - return ERROR_NT(NT_STATUS_UNSUCCESSFUL); - } - fstrcpy(sub_user, user); - - /* setup the string used by %U */ - sub_set_smb_name(user); - } else { - fstrcpy(sub_user, lp_guestaccount()); - } - - sub_set_smb_name(sub_user); - - reload_services(True); - - if (lp_security() == SEC_SHARE) { - /* in share level we should ignore any passwords */ - - data_blob_free(&lm_resp); - data_blob_free(&nt_resp); - data_blob_clear_free(&plaintext_password); - - map_username(sub_user); - add_session_user(sub_user); - /* Then force it to null for the benfit of the code below */ - *user = 0; - } - - if (!*user) { - - nt_status = check_guest_password(&server_info); - - } else if (doencrypt) { - if (!negprot_global_auth_context) { - DEBUG(0, ("reply_sesssetup_and_X: Attempted encrypted session setup without negprot denied!\n")); - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - nt_status = make_user_info_for_reply_enc(&user_info, user, domain, - lm_resp, nt_resp); - if (NT_STATUS_IS_OK(nt_status)) { - nt_status = negprot_global_auth_context->check_ntlm_password(negprot_global_auth_context, - user_info, - &server_info); - } - } else { - struct auth_context *plaintext_auth_context = NULL; - const uint8 *chal; - if (NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&plaintext_auth_context))) { - chal = plaintext_auth_context->get_ntlm_challenge(plaintext_auth_context); - - if (!make_user_info_for_reply(&user_info, - user, domain, chal, - plaintext_password)) { - nt_status = NT_STATUS_NO_MEMORY; - } - - if (NT_STATUS_IS_OK(nt_status)) { - nt_status = plaintext_auth_context->check_ntlm_password(plaintext_auth_context, - user_info, - &server_info); - - (plaintext_auth_context->free)(&plaintext_auth_context); - } - } - } - - free_user_info(&user_info); - - if (!NT_STATUS_IS_OK(nt_status)) { - nt_status = do_map_to_guest(nt_status, &server_info, user, domain); - } - - if (!NT_STATUS_IS_OK(nt_status)) { - data_blob_free(&nt_resp); - data_blob_free(&lm_resp); - data_blob_clear_free(&plaintext_password); - return ERROR_NT(nt_status_squash(nt_status)); - } - - if (server_info->nt_session_key.data) { - session_key = data_blob(server_info->nt_session_key.data, server_info->nt_session_key.length); - } else if (server_info->lm_session_key.length >= 8 && lm_resp.length == 24) { - session_key = data_blob(NULL, 16); - SMBsesskeygen_lmv1(server_info->lm_session_key.data, lm_resp.data, - session_key.data); - } else { - session_key = data_blob(NULL, 0); - } - - data_blob_free(&lm_resp); - data_blob_clear_free(&plaintext_password); - - /* it's ok - setup a reply */ - set_message(outbuf,3,0,True); - if (Protocol >= PROTOCOL_NT1) { - char *p = smb_buf( outbuf ); - p += add_signature( outbuf, p ); - set_message_end( outbuf, p ); - /* perhaps grab OS version here?? */ - } - - if (server_info->guest) { - SSVAL(outbuf,smb_vwv2,1); - } - - /* register the name and uid as being validated, so further connections - to a uid can get through without a password, on the same VC */ - - /* register_vuid keeps the server info */ - sess_vuid = register_vuid(server_info, session_key, nt_resp, sub_user); - data_blob_free(&nt_resp); - - if (sess_vuid == -1) { - return ERROR_NT(NT_STATUS_LOGON_FAILURE); - } - - /* current_user_info is changed on new vuid */ - reload_services( True ); - - if (!server_info->guest && !srv_signing_started() && !srv_check_sign_mac(inbuf, True)) { - exit_server("reply_sesssetup_and_X: bad smb signature"); - } - - SSVAL(outbuf,smb_uid,sess_vuid); - SSVAL(inbuf,smb_uid,sess_vuid); - - if (!done_sesssetup) - max_send = MIN(max_send,smb_bufsize); - - done_sesssetup = True; - - END_PROFILE(SMBsesssetupX); - return chain_reply(inbuf,outbuf,length,bufsize); -} |