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Diffstat (limited to 'source3/smbd/sesssetup.c')
| -rw-r--r-- | source3/smbd/sesssetup.c | 808 |
1 files changed, 808 insertions, 0 deletions
diff --git a/source3/smbd/sesssetup.c b/source3/smbd/sesssetup.c new file mode 100644 index 0000000000..899c9174b2 --- /dev/null +++ b/source3/smbd/sesssetup.c @@ -0,0 +1,808 @@ +/* + Unix SMB/CIFS implementation. + handle SMBsessionsetup + Copyright (C) Andrew Tridgell 1998-2001 + Copyright (C) Andrew Bartlett 2001 + + 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_context *ntlmssp_auth_context = NULL; + +/* + 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)); + make_server_info_guest(server_info); + status = NT_STATUS_OK; + } + } + + 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)); + make_server_info_guest(server_info); + status = NT_STATUS_OK; + } + } + + return status; +} + + +/**************************************************************************** + Add the standard 'Samba' signature to the end of the session setup. +****************************************************************************/ +static void add_signature(char *outbuf) +{ + char *p; + p = smb_buf(outbuf); + p += srvstr_push(outbuf, p, "Unix", -1, STR_TERMINATE); + p += srvstr_push(outbuf, p, "Samba", -1, STR_TERMINATE); + p += srvstr_push(outbuf, p, lp_workgroup(), -1, STR_TERMINATE); + set_message_end(outbuf,p); +} + +/**************************************************************************** + 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; + const struct passwd *pw; + char *user; + int sess_vuid; + NTSTATUS ret; + DATA_BLOB auth_data; + auth_serversupplied_info *server_info = NULL; + ADS_STRUCT *ads; + + if (!spnego_parse_krb5_wrap(*secblob, &ticket)) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + ads = ads_init(NULL, NULL, NULL, NULL); + + ret = ads_verify_ticket(ads, &ticket, &client, &auth_data); + if (!NT_STATUS_IS_OK(ret)) { + DEBUG(1,("Failed to verify incoming ticket!\n")); + ads_destroy(&ads); + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + DEBUG(3,("Ticket name is [%s]\n", client)); + + p = strchr_m(client, '@'); + if (!p) { + DEBUG(3,("Doesn't look like a valid principal\n")); + ads_destroy(&ads); + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + *p = 0; + if (strcasecmp(p+1, ads->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); + } + /* this gives a fully qualified user name (ie. with full realm). + that leads to very long usernames, but what else can we do? */ + asprintf(&user, "%s%s%s", p+1, lp_winbind_separator(), client); + } else { + user = strdup(client); + } + ads_destroy(&ads); + + /* the password is good - let them in */ + pw = smb_getpwnam(user,False); + if (!pw && !strstr(user, lp_winbind_separator())) { + char *user2; + /* try it with a winbind domain prefix */ + asprintf(&user2, "%s%s%s", lp_workgroup(), lp_winbind_separator(), user); + pw = smb_getpwnam(user2,False); + if (pw) { + free(user); + user = user2; + } + } + + if (!pw) { + DEBUG(1,("Username %s is invalid on this system\n",user)); + return ERROR_NT(NT_STATUS_NO_SUCH_USER); + } + + if (!make_server_info_pw(&server_info,pw)) { + DEBUG(1,("make_server_info_from_pw failed!\n")); + return ERROR_NT(NT_STATUS_NO_MEMORY); + } + + sess_vuid = register_vuid(server_info, user); + + free(user); + free_server_info(&server_info); + + if (sess_vuid == -1) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + set_message(outbuf,4,0,True); + SSVAL(outbuf, smb_vwv3, 0); + add_signature(outbuf); + + SSVAL(outbuf,smb_uid,sess_vuid); + SSVAL(inbuf,smb_uid,sess_vuid); + + return chain_reply(inbuf,outbuf,length,bufsize); +} +#endif + + +/**************************************************************************** +send a security blob via a session setup reply +****************************************************************************/ +static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf, + DATA_BLOB blob) +{ + char *p; + + set_message(outbuf,4,0,True); + + /* 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)); + SSVAL(outbuf, smb_vwv0, 0xFF); /* no chaining possible */ + SSVAL(outbuf, smb_vwv3, blob.length); + p = smb_buf(outbuf); + memcpy(p, blob.data, blob.length); + p += blob.length; + p += srvstr_push(outbuf, p, "Unix", -1, STR_TERMINATE); + p += srvstr_push(outbuf, p, "Samba", -1, STR_TERMINATE); + p += srvstr_push(outbuf, p, lp_workgroup(), -1, STR_TERMINATE); + set_message_end(outbuf,p); + + return send_smb(smbd_server_fd(),outbuf); +} + +/**************************************************************************** +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; + uint32 ntlmssp_command, neg_flags; + DATA_BLOB sess_key, chal, spnego_chal; + const uint8 *cryptkey; + 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); + } + + for (i=0;OIDs[i];i++) { + DEBUG(3,("Got OID %s\n", OIDs[i])); + if (strcmp(OID_KERBEROS5, OIDs[i]) == 0 || + strcmp(OID_KERBEROS5_OLD, OIDs[i]) == 0) { + got_kerberos = True; + } + free(OIDs[i]); + } + DEBUG(3,("Got secblob of size %d\n", secblob.length)); + +#ifdef HAVE_KRB5 + if (got_kerberos) { + int ret = reply_spnego_kerberos(conn, inbuf, outbuf, + length, bufsize, &secblob); + data_blob_free(&secblob); + return ret; + } +#endif + + /* parse the NTLMSSP packet */ +#if 0 + file_save("secblob.dat", secblob.data, secblob.length); +#endif + + if (!msrpc_parse(&secblob, "CddB", + "NTLMSSP", + &ntlmssp_command, + &neg_flags, + &sess_key)) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + data_blob_free(&secblob); + data_blob_free(&sess_key); + + if (ntlmssp_command != NTLMSSP_NEGOTIATE) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + DEBUG(3,("Got neg_flags=%08x\n", neg_flags)); + + if (ntlmssp_auth_context) { + (ntlmssp_auth_context->free)(&ntlmssp_auth_context); + } + + if (!NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&ntlmssp_auth_context))) { + return ERROR_NT(nt_status); + } + + cryptkey = ntlmssp_auth_context->get_ntlm_challenge(ntlmssp_auth_context); + + /* Give them the challenge. For now, ignore neg_flags and just + return the flags we want. Obviously this is not correct */ + + neg_flags = NTLMSSP_NEGOTIATE_UNICODE | + NTLMSSP_NEGOTIATE_LM_KEY | + NTLMSSP_NEGOTIATE_NTLM; + + msrpc_gen(&chal, "Cddddbdddd", + "NTLMSSP", + NTLMSSP_CHALLENGE, + 0, + 0x30, /* ?? */ + neg_flags, + cryptkey, 8, + 0, 0, 0, + 0x3000); /* ?? */ + + if (!spnego_gen_challenge(&spnego_chal, &chal, &chal)) { + DEBUG(3,("Failed to generate challenge\n")); + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + /* now tell the client to send the auth packet */ + reply_sesssetup_blob(conn, outbuf, spnego_chal); + + data_blob_free(&chal); + data_blob_free(&spnego_chal); + + /* and tell smbd that we have already replied to this packet */ + 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; + char *workgroup = NULL, *user = NULL, *machine = NULL; + DATA_BLOB lmhash, nthash, sess_key; + DATA_BLOB plaintext_password = data_blob(NULL, 0); + uint32 ntlmssp_command, neg_flags; + NTSTATUS nt_status; + int sess_vuid; + BOOL as_guest; + uint32 auth_flags = AUTH_FLAG_NONE; + + auth_usersupplied_info *user_info = NULL; + auth_serversupplied_info *server_info = NULL; + + if (!spnego_parse_auth(blob1, &auth)) { +#if 0 + file_save("auth.dat", blob1.data, blob1.length); +#endif + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + /* now the NTLMSSP encoded auth hashes */ + if (!msrpc_parse(&auth, "CdBBUUUBd", + "NTLMSSP", + &ntlmssp_command, + &lmhash, + &nthash, + &workgroup, + &user, + &machine, + &sess_key, + &neg_flags)) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + data_blob_free(&auth); + data_blob_free(&sess_key); + + DEBUG(3,("Got user=[%s] workgroup=[%s] machine=[%s] len1=%d len2=%d\n", + user, workgroup, machine, lmhash.length, nthash.length)); + +#if 0 + file_save("nthash1.dat", nthash.data, nthash.length); + file_save("lmhash1.dat", lmhash.data, lmhash.length); +#endif + + if (lmhash.length) { + auth_flags |= AUTH_FLAG_LM_RESP; + } + + if (nthash.length == 24) { + auth_flags |= AUTH_FLAG_NTLM_RESP; + } else if (nthash.length > 24) { + auth_flags |= AUTH_FLAG_NTLMv2_RESP; + } + + if (!make_user_info_map(&user_info, + user, workgroup, + machine, + lmhash, nthash, + plaintext_password, + auth_flags, True)) { + return ERROR_NT(NT_STATUS_NO_MEMORY); + } + + nt_status = ntlmssp_auth_context->check_ntlm_password(ntlmssp_auth_context, user_info, &server_info); + + if (!NT_STATUS_IS_OK(nt_status)) { + nt_status = do_map_to_guest(nt_status, &server_info, user, workgroup); + } + + SAFE_FREE(workgroup); + SAFE_FREE(machine); + + (ntlmssp_auth_context->free)(&ntlmssp_auth_context); + + free_user_info(&user_info); + + data_blob_free(&lmhash); + + data_blob_free(&nthash); + + if (!NT_STATUS_IS_OK(nt_status)) { + SAFE_FREE(user); + return ERROR_NT(nt_status_squash(nt_status)); + } + + as_guest = server_info->guest; + + sess_vuid = register_vuid(server_info, user); + free_server_info(&server_info); + + SAFE_FREE(user); + + if (sess_vuid == -1) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + set_message(outbuf,4,0,True); + SSVAL(outbuf, smb_vwv3, 0); + + if (as_guest) { + SSVAL(outbuf,smb_vwv2,1); + } + + add_signature(outbuf); + + SSVAL(outbuf,smb_uid,sess_vuid); + SSVAL(inbuf,smb_uid,sess_vuid); + + return chain_reply(inbuf,outbuf,length,bufsize); +} + + +/**************************************************************************** +reply to a session setup spnego anonymous packet +****************************************************************************/ +static int reply_spnego_anonymous(connection_struct *conn, char *inbuf, char *outbuf, + int length, int bufsize) +{ + int sess_vuid; + auth_serversupplied_info *server_info = NULL; + NTSTATUS nt_status; + + nt_status = check_guest_password(&server_info); + + if (!NT_STATUS_IS_OK(nt_status)) { + return ERROR_NT(nt_status_squash(nt_status)); + } + + sess_vuid = register_vuid(server_info, lp_guestaccount()); + + free_server_info(&server_info); + + if (sess_vuid == -1) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + set_message(outbuf,4,0,True); + SSVAL(outbuf, smb_vwv3, 0); + add_signature(outbuf); + + SSVAL(outbuf,smb_uid,sess_vuid); + SSVAL(inbuf,smb_uid,sess_vuid); + + return chain_reply(inbuf,outbuf,length,bufsize); +} + + +/**************************************************************************** +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; + + DEBUG(3,("Doing spnego session setup\n")); + + if (global_client_caps == 0) { + global_client_caps = IVAL(inbuf,smb_vwv10); + } + + p = (uint8 *)smb_buf(inbuf); + + if (SVAL(inbuf, smb_vwv7) == 0) { + /* an anonymous request */ + return reply_spnego_anonymous(conn, inbuf, outbuf, length, bufsize); + } + + /* pull the spnego blob */ + blob1 = data_blob(p, SVAL(inbuf, smb_vwv7)); + +#if 0 + file_save("negotiate.dat", blob1.data, blob1.length); +#endif + + 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); +} + + +/**************************************************************************** +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; + pstring user; + pstring sub_user; /* Sainitised username for substituion */ + fstring domain; + fstring native_os; + fstring native_lanman; + static BOOL done_sesssetup = False; + 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; + + 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; + + 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); + } + + 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) { + return ERROR_DOS(ERRDOS,ERRbuftoosmall); + } + + 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(inbuf, user, smb_buf(inbuf)+passlen1, sizeof(user), -1, 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); + + if(global_client_caps == 0) + global_client_caps = IVAL(inbuf,smb_vwv11); + + /* 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 (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. + + 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; + } + + /* 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; + } + + p += passlen1 + passlen2; + p += srvstr_pull(inbuf, user, p, sizeof(user), -1, + STR_TERMINATE); + p += srvstr_pull(inbuf, domain, p, sizeof(domain), + -1, STR_TERMINATE); + p += srvstr_pull(inbuf, native_os, p, sizeof(native_os), + -1, STR_TERMINATE); + p += srvstr_pull(inbuf, native_lanman, p, sizeof(native_lanman), + -1, STR_TERMINATE); + DEBUG(3,("Domain=[%s] NativeOS=[%s] NativeLanMan=[%s]\n", + domain,native_os,native_lanman)); + } + + /* don't allow for weird usernames or domains */ + alpha_strcpy(user, user, ". _-$", sizeof(user)); + alpha_strcpy(domain, domain, ". _-", sizeof(domain)); + if (strstr(user, "..") || strstr(domain,"..")) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n", domain, user, remote_machine)); + + if (*user) { + if (global_spnego_negotiated) { + + /* This has to be here, becouse 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); + } + pstrcpy(sub_user, user); + } else { + pstrcpy(sub_user, lp_guestaccount()); + } + + pstrcpy(current_user_info.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 (!make_user_info_for_reply_enc(&user_info, + user, domain, + lm_resp, nt_resp)) { + nt_status = NT_STATUS_NO_MEMORY; + } else { + 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); + + data_blob_free(&lm_resp); + data_blob_free(&nt_resp); + data_blob_clear_free(&plaintext_password); + + 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)) { + return ERROR_NT(nt_status_squash(nt_status)); + } + + /* it's ok - setup a reply */ + if (Protocol < PROTOCOL_NT1) { + set_message(outbuf,3,0,True); + } else { + set_message(outbuf,3,0,True); + add_signature(outbuf); + /* 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 */ + + sess_vuid = register_vuid(server_info, sub_user); + + free_server_info(&server_info); + + if (sess_vuid == -1) { + return ERROR_NT(NT_STATUS_LOGON_FAILURE); + } + + + 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); +} |