/* * 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, ""); 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; }