diff options
Diffstat (limited to 'source/nmbd/nmbd_processlogon.c')
| -rw-r--r-- | source/nmbd/nmbd_processlogon.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/source/nmbd/nmbd_processlogon.c b/source/nmbd/nmbd_processlogon.c new file mode 100644 index 00000000000..ae917564fe2 --- /dev/null +++ b/source/nmbd/nmbd_processlogon.c @@ -0,0 +1,250 @@ +/* + Unix SMB/Netbios implementation. + Version 1.9. + NBT netbios routines and daemon - version 2 + Copyright (C) Andrew Tridgell 1994-1997 + Copyright (C) Luke Kenneth Casson Leighton 1994-1997 + Copyright (C) Jeremy Allison 1994-1997 + + 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. + + Revision History: + +*/ + +#include "includes.h" + +extern int DEBUGLEVEL; + +extern pstring myname; +extern fstring myworkgroup; + +/**************************************************************************** +Process a domain logon packet +**************************************************************************/ + +void process_logon_packet(struct packet_struct *p,char *buf,int len, + char *mailslot) +{ + struct dgram_packet *dgram = &p->packet.dgram; + pstring my_name; + fstring reply_name; + BOOL add_slashes = False; + pstring outbuf; + int code,reply_code; + char unknown_byte = 0; + uint16 request_count = 0; + uint16 token = 0; + + uint32 ntversion; + uint16 lmnttoken; + uint16 lm20token; + uint32 allowableaccount; /* Control bits, i.e. 0x80 == workstation trust a/c. */ + uint32 domainsidsize; + uint16 requestcount; + char *domainsid; + char *getdc; + char *uniuser; /* Unicode user name. */ + pstring ascuser; + char *unicomp; /* Unicode computer name. */ + struct smb_passwd *smb_pass; /* To check if machine account exists */ + + if (!lp_domain_logons()) + { + DEBUG(3,("process_logon_packet: Logon packet received from IP %S and domain \ +logons are not enabled.\n", inet_ntoa(p->ip) )); + return; + } + + strcpy(my_name, myname); + strupper(my_name); + + code = SVAL(buf,0); + DEBUG(1,("process_logon_packet: Logon from %s: code = %x\n", inet_ntoa(p->ip), code)); + + switch (code) + { + case 0: + { + char *q = buf + 2; + char *machine = q; + char *user = skip_string(machine,1); + + getdc = skip_string(user,1); + q = skip_string(getdc,1); + unknown_byte = CVAL(q,0); + request_count = SVAL(q,1); + token = SVAL(q,3); + + reply_code = 0x6; + strcpy(reply_name,my_name); + add_slashes = True; + + DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n", + machine,inet_ntoa(p->ip),user,token)); + + q = outbuf; + SSVAL(q, 0, 6); q += 2; + + strcpy(reply_name, "\\\\"); + strcat(reply_name, my_name); + strcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */ + + SSVAL(q, 0, token); q += 2; + + dump_data(4, outbuf, PTR_DIFF(q, outbuf)); + + send_mailslot(True, getdc, + outbuf,PTR_DIFF(q,outbuf), + dgram->dest_name.name, + dgram->dest_name.name_type, + dgram->source_name.name, + dgram->source_name.name_type, + p->ip, *iface_ip(p->ip)); + break; + } + + case QUERYFORPDC: + { + char *q = buf + 2; + char *machine = q; + + getdc = skip_string(machine,1); + unicomp = skip_string(getdc,1); + + q = align2(unicomp, buf); + + q = skip_unicode_string(q, 1); + + ntversion = IVAL(q, 0); q += 4; + lmnttoken = SVAL(q, 0); q += 2; + lm20token = SVAL(q, 0); q += 2; + + /* Construct reply. */ + + q = outbuf; + SSVAL(q, 0, QUERYFORPDC_R); q += 2; + + strcpy(reply_name,my_name); + strcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */ + + if (strcmp(mailslot, NT_LOGON_MAILSLOT)==0) { + q = align2(q, buf); + + PutUniCode(q, my_name); /* PDC name */ + q = skip_unicode_string(q, 1); + PutUniCode(q, myworkgroup); /* Domain name*/ + q = skip_unicode_string(q, 1); + + SIVAL(q, 0, ntversion); q += 4; + SSVAL(q, 0, lmnttoken); q += 2; + SSVAL(q, 0, lm20token); q += 2; + } + + DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \ +reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n", + machine,inet_ntoa(p->ip), reply_name, lp_workgroup(), + QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken, + (uint32)lm20token )); + + dump_data(4, outbuf, PTR_DIFF(q, outbuf)); + + send_mailslot(True, getdc, + outbuf,PTR_DIFF(q,outbuf), + dgram->dest_name.name, + dgram->dest_name.name_type, + dgram->source_name.name, + dgram->source_name.name_type, + p->ip, *iface_ip(p->ip)); + return; + } + + case SAMLOGON: + { + char *q = buf + 2; + + requestcount = SVAL(q, 0); q += 2; + unicomp = q; + uniuser = skip_unicode_string(unicomp,1); + getdc = skip_unicode_string(uniuser,1); + q = skip_string(getdc,1); + allowableaccount = IVAL(q, 0); q += 4; + domainsidsize = IVAL(q, 0); q += 4; + domainsid = q; + q += domainsidsize + 3; + ntversion = IVAL(q, 0); q += 4; + lmnttoken = SVAL(q, 0); q += 2; + lm20token = SVAL(q, 0); q += 2; + + DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion)); + + /* + * If MACHINE$ is in our password database then respond, else ignore. + * Let's ignore the SID. + */ + + strcpy(ascuser, unistr(uniuser)); + DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser)); + + strcpy(reply_name,"\\\\"); /* Here it wants \\LOGONSERVER. */ + strcpy(reply_name+2,my_name); + + smb_pass = get_smbpwd_entry(ascuser, 0); + + if(!smb_pass) + { + DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, not in password file\n", + unistr(unicomp),inet_ntoa(p->ip), ascuser)); + return; + } + else + { + DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n", + unistr(unicomp),inet_ntoa(p->ip), ascuser, reply_name, myworkgroup, + SAMLOGON_R ,lmnttoken)); + } + + /* Construct reply. */ + + q = outbuf; + SSVAL(q, 0, SAMLOGON_R); q += 2; + + PutUniCode(q, reply_name); q = skip_unicode_string(q, 1); + unistrcpy(q, uniuser); q = skip_unicode_string(q, 1); /* User name (workstation trust account) */ + PutUniCode(q, lp_workgroup()); q = skip_unicode_string(q, 1); /* Domain name. */ + + SIVAL(q, 0, ntversion); q += 4; + SSVAL(q, 0, lmnttoken); q += 2; + SSVAL(q, 0, lm20token); q += 2; + + dump_data(4, outbuf, PTR_DIFF(q, outbuf)); + + send_mailslot(True, getdc, + outbuf,PTR_DIFF(q,outbuf), + dgram->dest_name.name, + dgram->dest_name.name_type, + dgram->source_name.name, + dgram->source_name.name_type, + p->ip, *iface_ip(p->ip)); + break; + } + + default: + { + DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code)); + return; + } + } +} |