diff options
| -rw-r--r-- | source3/rpc_server/srv_netlog_nt.c | 663 |
1 files changed, 663 insertions, 0 deletions
diff --git a/source3/rpc_server/srv_netlog_nt.c b/source3/rpc_server/srv_netlog_nt.c new file mode 100644 index 0000000000..151c72499a --- /dev/null +++ b/source3/rpc_server/srv_netlog_nt.c @@ -0,0 +1,663 @@ +/* + * Unix SMB/Netbios implementation. + * Version 1.9. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-1997, + * Copyright (C) Luke Kenneth Casson Leighton 1996-1997, + * Copyright (C) Paul Ashton 1997. + * Copyright (C) Jeremy Allison 1998-2001. + * + * 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. + */ + +/* This is the implementation of the netlogon pipe. */ + +#include "includes.h" + +extern int DEBUGLEVEL; + +extern BOOL sam_logon_in_ssb; +extern pstring samlogon_user; +extern pstring global_myname; +extern DOM_SID global_sam_sid; + +/************************************************************************* + init_net_r_req_chal: + *************************************************************************/ + +static void init_net_r_req_chal(NET_R_REQ_CHAL *r_c, + DOM_CHAL *srv_chal, int status) +{ + DEBUG(6,("init_net_r_req_chal: %d\n", __LINE__)); + memcpy(r_c->srv_chal.data, srv_chal->data, sizeof(srv_chal->data)); + r_c->status = status; +} + +/************************************************************************* + error messages cropping up when using nltest.exe... + *************************************************************************/ + +#define ERROR_NO_SUCH_DOMAIN 0x54b +#define ERROR_NO_LOGON_SERVERS 0x51f + +/************************************************************************* + net_reply_logon_ctrl2: + *************************************************************************/ + +uint32 _net_logon_ctrl2(pipes_struct *p, NET_Q_LOGON_CTRL2 *q_u, NET_R_LOGON_CTRL2 *r_u) +{ + /* lkclXXXX - guess what - absolutely no idea what these are! */ + uint32 flags = 0x0; + uint32 pdc_connection_status = 0x0; + uint32 logon_attempts = 0x0; + uint32 tc_status = ERROR_NO_LOGON_SERVERS; + char *trusted_domain = "test_domain"; + + DEBUG(6,("_net_logon_ctrl2: %d\n", __LINE__)); + + /* set up the Logon Control2 response */ + init_r_logon_ctrl2(r_u, q_u->query_level, + flags, pdc_connection_status, logon_attempts, + tc_status, trusted_domain); + + DEBUG(6,("_net_logon_ctrl2: %d\n", __LINE__)); + + return r_u->status; +} + +/************************************************************************* + net_reply_trust_dom_list: + *************************************************************************/ + +uint32 _net_trust_dom_list(pipes_struct *p, NET_Q_TRUST_DOM_LIST *q_u, NET_R_TRUST_DOM_LIST *r_u) +{ + char *trusted_domain = "test_domain"; + uint32 num_trust_domains = 1; + + DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__)); + + /* set up the Trusted Domain List response */ + init_r_trust_dom(r_u, num_trust_domains, trusted_domain); + + DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__)); + + return r_u->status; +} + +/************************************************************************* + init_net_r_auth_2: + *************************************************************************/ + +static void init_net_r_auth_2(NET_R_AUTH_2 *r_a, + DOM_CHAL *resp_cred, NEG_FLAGS *flgs, int status) +{ + memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data)); + memcpy(&r_a->srv_flgs, flgs, sizeof(r_a->srv_flgs)); + r_a->status = status; +} + +/*********************************************************************************** + init_net_r_srv_pwset: + ***********************************************************************************/ + +static void init_net_r_srv_pwset(NET_R_SRV_PWSET *r_s, + DOM_CRED *srv_cred, int status) +{ + DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__)); + + memcpy(&r_s->srv_cred, srv_cred, sizeof(r_s->srv_cred)); + r_s->status = status; + + DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__)); +} + +/****************************************************************** + gets a machine password entry. checks access rights of the host. + ******************************************************************/ + +static BOOL get_md4pw(char *md4pw, char *mach_acct) +{ + struct smb_passwd *smb_pass; + +#if 0 + /* + * Currently this code is redundent as we already have a filter + * by hostname list. What this code really needs to do is to + * get a hosts allowed/hosts denied list from the SAM database + * on a per user basis, and make the access decision there. + * I will leave this code here for now as a reminder to implement + * this at a later date. JRA. + */ + + if (!allow_access(lp_domain_hostsdeny(), lp_domain_hostsallow(), + client_name(), client_addr())) + { + DEBUG(0,("get_md4pw: Workstation %s denied access to domain\n", mach_acct)); + return False; + } +#endif /* 0 */ + + become_root(); + smb_pass = getsmbpwnam(mach_acct); + unbecome_root(); + + if ((smb_pass) != NULL && !(smb_pass->acct_ctrl & ACB_DISABLED) && + (smb_pass->smb_nt_passwd != NULL)) + { + memcpy(md4pw, smb_pass->smb_nt_passwd, 16); + dump_data(5, md4pw, 16); + + return True; + } + DEBUG(0,("get_md4pw: Workstation %s: no account in domain\n", mach_acct)); + return False; +} + +/************************************************************************* + _net_req_chal + *************************************************************************/ + +uint32 _net_req_chal(pipes_struct *p, NET_Q_REQ_CHAL *q_u, NET_R_REQ_CHAL *r_u) +{ + uint32 status = NT_STATUS_NOPROBLEMO; + fstring mach_acct; + user_struct *vuser; + + if ((vuser = get_valid_user_struct(p->vuid)) == NULL) + return False; + + fstrcpy(mach_acct, dos_unistrn2(q_u->uni_logon_clnt.buffer, + q_u->uni_logon_clnt.uni_str_len)); + + strlower(mach_acct); + fstrcat(mach_acct, "$"); + + if (get_md4pw((char *)vuser->dc.md4pw, mach_acct)) { + /* copy the client credentials */ + memcpy(vuser->dc.clnt_chal.data , q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data)); + memcpy(vuser->dc.clnt_cred.challenge.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data)); + + /* create a server challenge for the client */ + /* Set these to random values. */ + generate_random_buffer(vuser->dc.srv_chal.data, 8, False); + + memcpy(vuser->dc.srv_cred.challenge.data, vuser->dc.srv_chal.data, 8); + + memset((char *)vuser->dc.sess_key, '\0', sizeof(vuser->dc.sess_key)); + + /* from client / server challenges and md4 password, generate sess key */ + cred_session_key(&vuser->dc.clnt_chal, &vuser->dc.srv_chal, + (char *)vuser->dc.md4pw, vuser->dc.sess_key); + } else { + /* lkclXXXX take a guess at a good error message to return :-) */ + status = NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT; + } + + /* set up the LSA REQUEST CHALLENGE response */ + init_net_r_req_chal(r_u, &vuser->dc.srv_chal, status); + + return r_u->status; +} + +/************************************************************************* + _net_auth_2 + *************************************************************************/ + +uint32 _net_auth_2(pipes_struct *p, NET_Q_AUTH_2 *q_u, NET_R_AUTH_2 *r_u) +{ + uint32 status = NT_STATUS_NOPROBLEMO; + DOM_CHAL srv_cred; + UTIME srv_time; + NEG_FLAGS srv_flgs; + user_struct *vuser; + + if ((vuser = get_valid_user_struct(p->vuid)) == NULL) + return NT_STATUS_NO_SUCH_USER; + + srv_time.time = 0; + + /* check that the client credentials are valid */ + if (cred_assert(&q_u->clnt_chal, vuser->dc.sess_key, &vuser->dc.clnt_cred.challenge, srv_time)) { + + /* create server challenge for inclusion in the reply */ + cred_create(vuser->dc.sess_key, &vuser->dc.srv_cred.challenge, srv_time, &srv_cred); + + /* copy the received client credentials for use next time */ + memcpy(vuser->dc.clnt_cred.challenge.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data)); + memcpy(vuser->dc.srv_cred .challenge.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data)); + } else { + status = NT_STATUS_ACCESS_DENIED; + } + + srv_flgs.neg_flags = 0x000001ff; + + /* set up the LSA AUTH 2 response */ + init_net_r_auth_2(r_u, &srv_cred, &srv_flgs, status); + + return r_u->status; +} + +/************************************************************************* + _net_srv_pwset + *************************************************************************/ + +uint32 _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET *r_u) +{ + uint16 vuid = p->vuid; + uint32 status = NT_STATUS_NOPROBLEMO; + DOM_CRED srv_cred; + pstring mach_acct; + struct smb_passwd *smb_pass; + BOOL ret; + user_struct *vuser; + unsigned char pwd[16]; + int i; + + if ((vuser = get_valid_user_struct(vuid)) == NULL) + return NT_STATUS_NO_SUCH_USER; + + /* checks and updates credentials. creates reply credentials */ + if (!deal_with_creds(vuser->dc.sess_key, &vuser->dc.clnt_cred, &q_u->clnt_id.cred, &srv_cred)) + return NT_STATUS_INVALID_HANDLE; + + memcpy(&vuser->dc.srv_cred, &vuser->dc.clnt_cred, sizeof(vuser->dc.clnt_cred)); + + DEBUG(5,("_net_srv_pwset: %d\n", __LINE__)); + + pstrcpy(mach_acct, dos_unistrn2(q_u->clnt_id.login.uni_acct_name.buffer, + q_u->clnt_id.login.uni_acct_name.uni_str_len)); + + DEBUG(3,("Server Password Set Wksta:[%s]\n", mach_acct)); + + become_root(); + smb_pass = getsmbpwnam(mach_acct); + unbecome_root(); + + if (smb_pass == NULL) + return NT_STATUS_NO_SUCH_USER; + + DEBUG(100,("Server password set : new given value was :\n")); + for(i = 0; i < 16; i++) + DEBUG(100,("%02X ", q_u->pwd[i])); + DEBUG(100,("\n")); + + cred_hash3( pwd, q_u->pwd, vuser->dc.sess_key, 0); + + /* lies! nt and lm passwords are _not_ the same: don't care */ + smb_pass->smb_passwd = pwd; + smb_pass->smb_nt_passwd = pwd; + smb_pass->acct_ctrl = ACB_WSTRUST; + + become_root(); + ret = mod_smbpwd_entry(smb_pass,False); + unbecome_root(); + + if (!ret) + status = NT_STATUS_WRONG_PASSWORD; + + /* set up the LSA Server Password Set response */ + init_net_r_srv_pwset(r_u, &srv_cred, status); + + return r_u->status; +} + + +/************************************************************************* + _net_sam_logoff: + *************************************************************************/ + +uint32 _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOFF *r_u) +{ + DOM_CRED srv_cred; + + user_struct *vuser; + + if ((vuser = get_valid_user_struct(p->vuid)) == NULL) + return NT_STATUS_NO_SUCH_USER; + + /* checks and updates credentials. creates reply credentials */ + if (!deal_with_creds(vuser->dc.sess_key, &vuser->dc.clnt_cred, + &q_u->sam_id.client.cred, &srv_cred)) + return NT_STATUS_INVALID_HANDLE; + + memcpy(&vuser->dc.srv_cred, &vuser->dc.clnt_cred, sizeof(vuser->dc.clnt_cred)); + + /* XXXX maybe we want to say 'no', reject the client's credentials */ + r_u->buffer_creds = 1; /* yes, we have valid server credentials */ + memcpy(&r_u->srv_creds, &srv_cred, sizeof(r_u->srv_creds)); + + r_u->status = NT_STATUS_NOPROBLEMO; + + return r_u->status; +} + +/************************************************************************* + net_login_interactive: + *************************************************************************/ + +static uint32 net_login_interactive(NET_ID_INFO_1 *id1, struct smb_passwd *smb_pass, user_struct *vuser) +{ + uint32 status = 0x0; + + char nt_pwd[16]; + char lm_pwd[16]; + unsigned char key[16]; + + memset(key, 0, 16); + memcpy(key, vuser->dc.sess_key, 8); + + memcpy(lm_pwd, id1->lm_owf.data, 16); + memcpy(nt_pwd, id1->nt_owf.data, 16); + +#ifdef DEBUG_PASSWORD + DEBUG(100,("key:")); + dump_data(100, (char *)key, 16); + + DEBUG(100,("lm owf password:")); + dump_data(100, lm_pwd, 16); + + DEBUG(100,("nt owf password:")); + dump_data(100, nt_pwd, 16); +#endif + + SamOEMhash((uchar *)lm_pwd, key, False); + SamOEMhash((uchar *)nt_pwd, key, False); + +#ifdef DEBUG_PASSWORD + DEBUG(100,("decrypt of lm owf password:")); + dump_data(100, lm_pwd, 16); + + DEBUG(100,("decrypt of nt owf password:")); + dump_data(100, nt_pwd, 16); +#endif + + if (memcmp(smb_pass->smb_passwd , lm_pwd, 16) != 0 || + memcmp(smb_pass->smb_nt_passwd, nt_pwd, 16) != 0) + { + status = NT_STATUS_WRONG_PASSWORD; + } + + return status; +} + +/************************************************************************* + _net_login_network: + *************************************************************************/ + +static uint32 net_login_network(NET_ID_INFO_2 *id2, struct smb_passwd *smb_pass) +{ + DEBUG(5,("net_login_network: lm_len: %d nt_len: %d\n", + id2->hdr_lm_chal_resp.str_str_len, + id2->hdr_nt_chal_resp.str_str_len)); + + /* JRA. Check the NT password first if it exists - this is a higher quality + password, if it exists and it doesn't match - fail. */ + + if (id2->hdr_nt_chal_resp.str_str_len == 24 && + smb_pass->smb_nt_passwd != NULL) + { + if(smb_password_check((char *)id2->nt_chal_resp.buffer, + smb_pass->smb_nt_passwd, + id2->lm_chal)) + return 0x0; + else + return NT_STATUS_WRONG_PASSWORD; + } + + /* lkclXXXX this is not a good place to put disabling of LM hashes in. + if that is to be done, first move this entire function into a + library routine that calls the two smb_password_check() functions. + if disabling LM hashes (which nt can do for security reasons) then + an attempt should be made to disable them everywhere (which nt does + not do, for various security-hole reasons). + */ + + if (id2->hdr_lm_chal_resp.str_str_len == 24 && + smb_password_check((char *)id2->lm_chal_resp.buffer, + smb_pass->smb_passwd, + id2->lm_chal)) + { + return 0x0; + } + + + /* oops! neither password check succeeded */ + + return NT_STATUS_WRONG_PASSWORD; +} + +/************************************************************************* + _net_sam_logon + *************************************************************************/ + +uint32 _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON *r_u) +{ + uint32 status = NT_STATUS_NOPROBLEMO; + uint16 vuid = p->vuid; + NET_USER_INFO_3 *usr_info = NULL; + DOM_CRED srv_cred; + struct smb_passwd *smb_pass = NULL; + struct sam_passwd *sam_pass = NULL; + UNISTR2 *uni_samlogon_user = NULL; + fstring nt_username; + struct passwd *pw; + user_struct *vuser = NULL; + + usr_info = (NET_USER_INFO_3 *)talloc(p->mem_ctx, sizeof(NET_USER_INFO_3)); + if (!usr_info) + return NT_STATUS_NO_MEMORY; + ZERO_STRUCTP(usr_info); + + if ((vuser = get_valid_user_struct(vuid)) == NULL) + return NT_STATUS_NO_SUCH_USER; + + /* checks and updates credentials. creates reply credentials */ + if (!deal_with_creds(vuser->dc.sess_key, &vuser->dc.clnt_cred, &q_u->sam_id.client.cred, &srv_cred)) + return NT_STATUS_INVALID_HANDLE; + else + memcpy(&vuser->dc.srv_cred, &vuser->dc.clnt_cred, sizeof(vuser->dc.clnt_cred)); + + /* find the username */ + + switch (q_u->sam_id.logon_level) { + case INTERACTIVE_LOGON_TYPE: + uni_samlogon_user = &q_u->sam_id.ctr->auth.id1.uni_user_name; + + DEBUG(3,("SAM Logon (Interactive). Domain:[%s]. ", lp_workgroup())); + break; + case NET_LOGON_TYPE: + uni_samlogon_user = &q_u->sam_id.ctr->auth.id2.uni_user_name; + + DEBUG(3,("SAM Logon (Network). Domain:[%s]. ", lp_workgroup())); + break; + default: + DEBUG(2,("SAM Logon: unsupported switch value\n")); + return NT_STATUS_INVALID_INFO_CLASS; + } /* end switch */ + + /* check username exists */ + + pstrcpy(nt_username, dos_unistrn2(uni_samlogon_user->buffer, uni_samlogon_user->uni_str_len)); + + DEBUG(3,("User:[%s]\n", nt_username)); + + /* + * Convert to a UNIX username. + */ + + map_username(nt_username); + + /* + * Do any case conversions. + */ + + pw=Get_Pwnam(nt_username, True); + + become_root(); + sam_pass = getsam21pwnam(nt_username); + smb_pass = getsmbpwnam(nt_username); + unbecome_root(); + + if (smb_pass == NULL) + return NT_STATUS_NO_SUCH_USER; + else if (smb_pass->acct_ctrl & ACB_DISABLED) + return NT_STATUS_ACCOUNT_DISABLED; + + /* Validate password - if required. */ + + if (!(smb_pass->acct_ctrl & ACB_PWNOTREQ)) { + switch (q_u->sam_id.logon_level) { + case INTERACTIVE_LOGON_TYPE: + /* interactive login. */ + status = net_login_interactive(&q_u->sam_id.ctr->auth.id1, smb_pass, vuser); + break; + case NET_LOGON_TYPE: + /* network login. lm challenge and 24 byte responses */ + status = net_login_network(&q_u->sam_id.ctr->auth.id2, smb_pass); + break; + } + } + + if (status != NT_STATUS_NOPROBLEMO) + return status; + + /* lkclXXXX this is the point at which, if the login was + successful, that the SAM Local Security Authority should + record that the user is logged in to the domain. + */ + + /* return the profile plus other bits :-) */ + + { + DOM_GID *gids = NULL; + int num_gids = 0; + NTTIME dummy_time; + pstring logon_script; + pstring profile_path; + pstring home_dir; + pstring home_drive; + pstring my_name; + pstring my_workgroup; + pstring domain_groups; + uint32 r_uid; + uint32 r_gid; + fstring full_name; + + /* set up pointer indicating user/password failed to be found */ + usr_info->ptr_user_info = 0; + + dummy_time.low = 0xffffffff; + dummy_time.high = 0x7fffffff; + + /* XXXX hack to get standard_sub_basic() to use sam logon username */ + /* possibly a better way would be to do a become_user() call */ + sam_logon_in_ssb = True; + pstrcpy(samlogon_user, nt_username); + + pstrcpy(logon_script, sam_pass->logon_script); + standard_sub_advanced(-1, nt_username, "", pw->pw_gid, logon_script); + + pstrcpy(profile_path, sam_pass->profile_path); + standard_sub_advanced(-1, nt_username, "", pw->pw_gid, profile_path); + + pstrcpy(my_workgroup, lp_workgroup()); + + pstrcpy(home_drive, sam_pass->dir_drive); + standard_sub_advanced(-1, nt_username, "", pw->pw_gid, home_drive); + + pstrcpy(home_dir, sam_pass->home_dir); + standard_sub_advanced(-1, nt_username, "", pw->pw_gid, home_dir); + + pstrcpy(my_name, global_myname); + strupper(my_name); + + pstrcpy(full_name, sam_pass->full_name ); + if( !*full_name ) { + fstrcpy(full_name, "<Full Name>"); + if (lp_unix_realname()) + fstrcpy(full_name, strtok(pw->pw_gecos, ",")); + } + + /* + * This is the point at which we get the group + * database - we should be getting the gid_t list + * from /etc/group and then turning the uids into + * rids and then into machine sids for this user. + * JRA. + */ + + get_domain_user_groups(domain_groups, nt_username); + + /* + * make_dom_gids allocates the gids array. JRA. + */ + gids = NULL; + num_gids = make_dom_gids(p->mem_ctx, domain_groups, &gids); + + sam_logon_in_ssb = False; + + if (pdb_name_to_rid(nt_username, &r_uid, &r_gid)) + init_net_user_info3(p->mem_ctx, usr_info, + &dummy_time, /* logon_time */ + &dummy_time, /* logoff_time */ + &dummy_time, /* kickoff_time */ + &dummy_time, /* pass_last_set_time */ + &dummy_time, /* pass_can_change_time */ + &dummy_time, /* pass_must_change_time */ + + nt_username , /* user_name */ + full_name, /* full_name */ + logon_script , /* logon_script */ + profile_path , /* profile_path */ + home_dir , /* home_dir */ + home_drive , /* dir_drive */ + + 0, /* logon_count */ + 0, /* bad_pw_count */ + + r_uid , /* RID user_id */ + r_gid , /* RID group_id */ + num_gids, /* uint32 num_groups */ + gids , /* DOM_GID *gids */ + 0x20 , /* uint32 user_flgs (?) */ + + NULL, /* char sess_key[16] */ + + my_name , /* char *logon_srv */ + my_workgroup, /* char *logon_dom */ + + &global_sam_sid, /* DOM_SID *dom_sid */ + NULL); /* char *other_sids */ + else + return NT_STATUS_NO_SUCH_USER; + + } + + /* XXXX maybe we want to say 'no', reject the client's credentials */ + r_u->buffer_creds = 1; /* yes, we have valid server credentials */ + memcpy(&r_u->srv_creds, &srv_cred, sizeof(r_u->srv_creds)); + + /* store the user information, if there is any. */ + r_u->user = usr_info; + if (status == NT_STATUS_NOPROBLEMO && usr_info != NULL && usr_info->ptr_user_info != 0) + r_u->switch_value = 3; /* indicates type of validation user info */ + else + r_u->switch_value = 0; /* indicates no info */ + + r_u->status = status; + r_u->auth_resp = 1; /* authoritative response */ + + return r_u->status; +} |