diff options
| -rw-r--r-- | source3/nmbd/nmbd_processlogon.c | 395 |
1 files changed, 94 insertions, 301 deletions
diff --git a/source3/nmbd/nmbd_processlogon.c b/source3/nmbd/nmbd_processlogon.c index 60c4523fcc..8780139643 100644 --- a/source3/nmbd/nmbd_processlogon.c +++ b/source3/nmbd/nmbd_processlogon.c @@ -309,18 +309,6 @@ void process_logon_packet(struct packet_struct *p, char *buf,int len, { fstring source_name; struct dgram_packet *dgram = &p->packet.dgram; - fstring my_name; - fstring reply_name; - char outbuf[1024]; - uint32 ntversion = 0; - uint16 lmnttoken = 0; - uint16 lm20token = 0; - uint32 domainsidsize; - char *getdc; - char *uniuser; /* Unicode user name. */ - fstring ascuser; - char *unicomp; /* Unicode computer name. */ - size_t size; struct sockaddr_storage ss; const struct sockaddr_storage *pss; struct in_addr ip; @@ -342,16 +330,12 @@ void process_logon_packet(struct packet_struct *p, char *buf,int len, } ip = ((struct sockaddr_in *)pss)->sin_addr; - memset(outbuf, 0, sizeof(outbuf)); - if (!lp_domain_logons()) { DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \ logons are not enabled.\n", inet_ntoa(p->ip) )); return; } - fstrcpy(my_name, global_myname()); - pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name); pdc_name = talloc_asprintf(talloc_tos(), "\\\\%s", global_myname()); @@ -468,10 +452,10 @@ logons are not enabled.\n", inet_ntoa(p->ip) )); } case LOGON_SAM_LOGON_REQUEST: { - fstring getdc_str; char *source_addr; - char *q = buf + 2; - fstring asccomp; + bool user_unknown = false; + + struct netlogon_samlogon_response samlogon; if (global_nmbd_proxy_logon) { nmbd_proxy_logon(global_nmbd_proxy_logon, @@ -479,317 +463,126 @@ logons are not enabled.\n", inet_ntoa(p->ip) )); return; } - q += 2; - - if (PTR_DIFF(q, buf) >= len) { - DEBUG(0,("process_logon_packet: bad packet\n")); - return; - } - - unicomp = q; - uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp)); - - if (PTR_DIFF(uniuser, buf) >= len) { - DEBUG(0,("process_logon_packet: bad packet\n")); - return; - } - - getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser)); - - if (PTR_DIFF(getdc, buf) >= len) { - DEBUG(0,("process_logon_packet: bad packet\n")); - return; - } - - q = skip_string(buf,len,getdc); - - if (!q || PTR_DIFF(q + 8, buf) >= len) { - DEBUG(0,("process_logon_packet: bad packet\n")); + source_addr = SMB_STRDUP(inet_ntoa(dgram->header.source_ip)); + if (source_addr == NULL) { + DEBUG(3, ("out of memory copying client" + " address string\n")); return; } - q += 4; /* Account Control Bits - indicating username type */ - domainsidsize = IVAL(q, 0); - q += 4; - - DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d, len = %d\n", domainsidsize, len)); - - if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) { - q += domainsidsize; - q = ALIGN4(q, buf); - } - - DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) )); - - if (len - PTR_DIFF(q, buf) > 8) { - /* with NT5 clients we can sometimes - get additional data - a length specificed string - containing the domain name, then 16 bytes of - data (no idea what it is) */ - int dom_len = CVAL(q, 0); - q++; - if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) { - q += dom_len + 1; - } - q += 16; - } + DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n", + request.req.logon.computer_name, + inet_ntoa(p->ip), + request.req.logon.user_name, + pdc_name, + lp_workgroup(), + LOGON_SAM_LOGON_RESPONSE, + request.req.logon.lmnt_token)); - if (PTR_DIFF(q + 8, buf) > len) { - DEBUG(0,("process_logon_packet: bad packet\n")); - return; + if (!request.req.logon.user_name) { + user_unknown = true; } - ntversion = IVAL(q, 0); - lmnttoken = SVAL(q, 4); - lm20token = SVAL(q, 6); - q += 8; - - DEBUG(3,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d ntv %d\n", domainsidsize, ntversion)); + /* we want the simple version unless we are an ADS PDC..which means */ + /* never, at least for now */ - /* - * we respond regadless of whether the machine is in our password - * database. If it isn't then we let smbd send an appropriate error. - * Let's ignore the SID. - */ - pull_ucs2_fstring(ascuser, uniuser); - pull_ucs2_fstring(asccomp, unicomp); - DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST user %s\n", ascuser)); + if ((request.req.logon.nt_version < (NETLOGON_NT_VERSION_1 | NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX_WITH_IP)) || + (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) { - fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */ - fstrcat(reply_name, my_name); + struct NETLOGON_SAM_LOGON_RESPONSE_NT40 nt4; - DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n", - asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(), - LOGON_SAM_LOGON_RESPONSE ,lmnttoken)); + nt4.command = user_unknown ? LOGON_SAM_LOGON_USER_UNKNOWN : + LOGON_SAM_LOGON_RESPONSE; + nt4.pdc_name = pdc_name; + nt4.user_name = request.req.logon.user_name; + nt4.domain_name = lp_workgroup(); + nt4.nt_version = NETLOGON_NT_VERSION_1; + nt4.lmnt_token = 0xffff; + nt4.lm20_token = 0xffff; - /* Construct reply. */ + samlogon.ntver = NETLOGON_NT_VERSION_1; + samlogon.data.nt4 = nt4; - q = outbuf; - /* we want the simple version unless we are an ADS PDC..which means */ - /* never, at least for now */ - if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) { - if (SVAL(uniuser, 0) == 0) { - SSVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN); /* user unknown */ - } else { - SSVAL(q, 0, LOGON_SAM_LOGON_RESPONSE); + if (DEBUGLEVEL >= 10) { + NDR_PRINT_DEBUG(NETLOGON_SAM_LOGON_RESPONSE_NT40, &nt4); } - - q += 2; - - q += dos_PutUniCode(q, reply_name, - sizeof(outbuf) - PTR_DIFF(q, outbuf), - True); - q += dos_PutUniCode(q, ascuser, - sizeof(outbuf) - PTR_DIFF(q, outbuf), - True); - q += dos_PutUniCode(q, lp_workgroup(), - sizeof(outbuf) - PTR_DIFF(q, outbuf), - True); } #ifdef HAVE_ADS else { + + struct NETLOGON_SAM_LOGON_RESPONSE_EX nt5_ex; struct GUID domain_guid; - UUID_FLAT flat_guid; + struct nbt_sockaddr saddr; char *domain; - char *hostname; - char *component, *dc, *q1; - char *q_orig = q; - int str_offset; - char *saveptr = NULL; + const char *hostname; + + saddr.sockaddr_family = 2; /* AF_INET */ + saddr.pdc_ip = inet_ntoa(ip); + saddr.remaining = data_blob_talloc_zero(talloc_tos(), 8); /* ??? */ domain = get_mydnsdomname(talloc_tos()); if (!domain) { - DEBUG(2, - ("get_mydnsdomname failed.\n")); - return; - } - hostname = get_myname(talloc_tos()); - if (!hostname) { - DEBUG(2, - ("get_myname failed.\n")); - return; - } - - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) { - return; - } - if (SVAL(uniuser, 0) == 0) { - SIVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN_EX); /* user unknown */ - } else { - SIVAL(q, 0, LOGON_SAM_LOGON_RESPONSE_EX); - } - q += 4; - - SIVAL(q, 0, NBT_SERVER_PDC|NBT_SERVER_GC|NBT_SERVER_LDAP|NBT_SERVER_DS| - NBT_SERVER_KDC|NBT_SERVER_TIMESERV|NBT_SERVER_CLOSEST|NBT_SERVER_WRITABLE); - q += 4; - - /* Push Domain GUID */ - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < UUID_FLAT_SIZE) { - return; - } - if (False == secrets_fetch_domain_guid(domain, &domain_guid)) { - DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain)); - return; - } - - smb_uuid_pack(domain_guid, &flat_guid); - memcpy(q, &flat_guid.info, UUID_FLAT_SIZE); - q += UUID_FLAT_SIZE; - - /* Forest */ - str_offset = q - q_orig; - dc = domain; - q1 = q; - while ((component = strtok_r(dc, ".", &saveptr)) != NULL) { - dc = NULL; - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) { - return; - } - size = push_ascii(&q[1], component, - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - 0); - if (size == (size_t)-1 || size > 0xff) { - return; - } - SCVAL(q, 0, size); - q += (size + 1); - } - - /* Unk0 */ - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) { - return; - } - SCVAL(q, 0, 0); - q++; - - /* Domain */ - SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F)); - SCVAL(q, 1, str_offset & 0xFF); - q += 2; - - /* Hostname */ - size = push_ascii(&q[1], hostname, - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - 0); - if (size == (size_t)-1 || size > 0xff) { - return; - } - SCVAL(q, 0, size); - q += (size + 1); - - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 3) { - return; - } - - SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F)); - SCVAL(q, 1, str_offset & 0xFF); - q += 2; - - /* NETBIOS of domain */ - size = push_ascii(&q[1], lp_workgroup(), - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - STR_UPPER); - if (size == (size_t)-1 || size > 0xff) { - return; - } - SCVAL(q, 0, size); - q += (size + 1); - - /* Unk1 */ - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 2) { - return; - } - - SCVAL(q, 0, 0); - q++; - - /* NETBIOS of hostname */ - size = push_ascii(&q[1], my_name, - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - 0); - if (size == (size_t)-1 || size > 0xff) { + DEBUG(2,("get_mydnsdomname failed.\n")); return; } - SCVAL(q, 0, size); - q += (size + 1); - /* Unk2 */ - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) { + hostname = get_mydnsfullname(); + if (!hostname) { + DEBUG(2,("get_mydnsfullname failed.\n")); return; } - SCVAL(q, 0, 0); - q++; - - /* User name */ - if (SVAL(uniuser, 0) != 0) { - size = push_ascii(&q[1], ascuser, - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - 0); - if (size == (size_t)-1 || size > 0xff) { - return; - } - SCVAL(q, 0, size); - q += (size + 1); - } - - q_orig = q; - /* Site name */ - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) { + if (!secrets_fetch_domain_guid(domain, &domain_guid)) { + DEBUG(2,("Could not fetch DomainGUID for %s\n", domain)); return; } - size = push_ascii(&q[1], "Default-First-Site-Name", - sizeof(outbuf) - PTR_DIFF(q+1, outbuf), - 0); - if (size == (size_t)-1 || size > 0xff) { - return; - } - SCVAL(q, 0, size); - q += (size + 1); - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 18) { - return; + nt5_ex.command = user_unknown ? LOGON_SAM_LOGON_USER_UNKNOWN_EX : + LOGON_SAM_LOGON_RESPONSE_EX; + nt5_ex.sbz = 0; + nt5_ex.server_type = NBT_SERVER_PDC | + NBT_SERVER_GC | + NBT_SERVER_LDAP | + NBT_SERVER_DS | + NBT_SERVER_KDC | + NBT_SERVER_TIMESERV | + NBT_SERVER_CLOSEST | + NBT_SERVER_WRITABLE; + nt5_ex.domain_uuid = domain_guid; + nt5_ex.forest = domain; + nt5_ex.dns_domain = domain; + nt5_ex.pdc_dns_name = hostname; + nt5_ex.domain_name = lp_workgroup(); + nt5_ex.pdc_name = global_myname(); + nt5_ex.user_name = request.req.logon.user_name; + nt5_ex.server_site = "Default-First-Site-Name"; + nt5_ex.client_site = "Default-First-Site-Name"; + nt5_ex.sockaddr_size = 0x10; /* the w32 winsock addr size */ + nt5_ex.sockaddr = saddr; + nt5_ex.next_closest_site= NULL; + nt5_ex.nt_version = NETLOGON_NT_VERSION_1 | + NETLOGON_NT_VERSION_5EX | + NETLOGON_NT_VERSION_5EX_WITH_IP; + nt5_ex.lmnt_token = 0xffff; + nt5_ex.lm20_token = 0xffff; + + samlogon.ntver = NETLOGON_NT_VERSION_1 | + NETLOGON_NT_VERSION_5EX | + NETLOGON_NT_VERSION_5EX_WITH_IP; + samlogon.data.nt5_ex = nt5_ex; + + if (DEBUGLEVEL >= 10) { + NDR_PRINT_DEBUG(NETLOGON_SAM_LOGON_RESPONSE_EX, &nt5_ex); } - - /* Site name (2) */ - str_offset = q - q_orig; - SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F)); - SCVAL(q, 1, str_offset & 0xFF); - q += 2; - - SCVAL(q, 0, PTR_DIFF(q,q1)); - SCVAL(q, 1, 0x10); /* unknown */ - - SIVAL(q, 0, 0x00000002); - q += 4; /* unknown */ - SIVAL(q, 0, ntohl(ip.s_addr)); - q += 4; - SIVAL(q, 0, 0x00000000); - q += 4; /* unknown */ - SIVAL(q, 0, 0x00000000); - q += 4; /* unknown */ - } -#endif - - if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) { - return; } +#endif /* HAVE_ADS */ - /* tell the client what version we are */ - SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13); - /* our ntversion */ - SSVAL(q, 4, 0xffff); /* our lmnttoken */ - SSVAL(q, 6, 0xffff); /* our lm20token */ - q += 8; - - dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf)); + response.response_type = NETLOGON_SAMLOGON; + response.data.samlogon = samlogon; - pull_ascii_fstring(getdc_str, getdc); - source_addr = SMB_STRDUP(inet_ntoa(dgram->header.source_ip)); - if (source_addr == NULL) { - DEBUG(3, ("out of memory copying client" - " address string\n")); + status = push_nbt_netlogon_response(&blob_out, talloc_tos(), &response); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0,("process_logon_packet: failed to push packet\n")); return; } @@ -799,7 +592,7 @@ logons are not enabled.\n", inet_ntoa(p->ip) )); * locked. */ if ((p->locked == False) && - (strlen(ascuser) == 0) && + (strlen(request.req.logon.user_name) == 0) && delay_logon(source_name, source_addr)) { struct timeval when; @@ -825,10 +618,10 @@ logons are not enabled.\n", inet_ntoa(p->ip) )); "logon reply for client " "%s(%s)\n", source_name, source_addr)); - p->locked = false; - send_mailslot(true, getdc, - outbuf,PTR_DIFF(q,outbuf), + send_mailslot(true, request.req.logon.mailslot_name, + (char *)blob_out.data, + blob_out.length, global_myname(), 0x0, source_name, dgram->source_name.name_type, |