mirror of
https://github.com/samba-team/samba.git
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s3-nmbd: use autogenerated marshalling for LOGON_SAM_LOGON_REQUEST.
Guenther
This commit is contained in:
Günther Deschner
parent
36d7efa75a
commit
71b95703f9
@ -309,18 +309,6 @@ void process_logon_packet(struct packet_struct *p, char *buf,int len,
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{
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fstring source_name;
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struct dgram_packet *dgram = &p->packet.dgram;
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fstring my_name;
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fstring reply_name;
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char outbuf[1024];
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uint32 ntversion = 0;
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uint16 lmnttoken = 0;
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uint16 lm20token = 0;
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uint32 domainsidsize;
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char *getdc;
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char *uniuser; /* Unicode user name. */
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fstring ascuser;
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char *unicomp; /* Unicode computer name. */
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size_t size;
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struct sockaddr_storage ss;
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const struct sockaddr_storage *pss;
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struct in_addr ip;
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@ -342,16 +330,12 @@ void process_logon_packet(struct packet_struct *p, char *buf,int len,
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}
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ip = ((struct sockaddr_in *)pss)->sin_addr;
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memset(outbuf, 0, sizeof(outbuf));
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if (!lp_domain_logons()) {
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DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \
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logons are not enabled.\n", inet_ntoa(p->ip) ));
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return;
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}
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fstrcpy(my_name, global_myname());
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pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
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pdc_name = talloc_asprintf(talloc_tos(), "\\\\%s", global_myname());
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@ -468,10 +452,10 @@ logons are not enabled.\n", inet_ntoa(p->ip) ));
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}
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case LOGON_SAM_LOGON_REQUEST: {
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fstring getdc_str;
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char *source_addr;
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char *q = buf + 2;
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fstring asccomp;
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bool user_unknown = false;
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struct netlogon_samlogon_response samlogon;
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if (global_nmbd_proxy_logon) {
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nmbd_proxy_logon(global_nmbd_proxy_logon,
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@ -479,313 +463,6 @@ logons are not enabled.\n", inet_ntoa(p->ip) ));
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return;
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}
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q += 2;
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if (PTR_DIFF(q, buf) >= len) {
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DEBUG(0,("process_logon_packet: bad packet\n"));
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return;
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}
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unicomp = q;
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uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
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if (PTR_DIFF(uniuser, buf) >= len) {
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DEBUG(0,("process_logon_packet: bad packet\n"));
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return;
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}
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getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
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if (PTR_DIFF(getdc, buf) >= len) {
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DEBUG(0,("process_logon_packet: bad packet\n"));
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return;
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}
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q = skip_string(buf,len,getdc);
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if (!q || PTR_DIFF(q + 8, buf) >= len) {
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DEBUG(0,("process_logon_packet: bad packet\n"));
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return;
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}
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q += 4; /* Account Control Bits - indicating username type */
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domainsidsize = IVAL(q, 0);
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q += 4;
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DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d, len = %d\n", domainsidsize, len));
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if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
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q += domainsidsize;
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q = ALIGN4(q, buf);
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}
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DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) ));
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if (len - PTR_DIFF(q, buf) > 8) {
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/* with NT5 clients we can sometimes
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get additional data - a length specificed string
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containing the domain name, then 16 bytes of
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data (no idea what it is) */
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int dom_len = CVAL(q, 0);
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q++;
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if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
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q += dom_len + 1;
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}
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q += 16;
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}
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if (PTR_DIFF(q + 8, buf) > len) {
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DEBUG(0,("process_logon_packet: bad packet\n"));
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return;
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}
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ntversion = IVAL(q, 0);
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lmnttoken = SVAL(q, 4);
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lm20token = SVAL(q, 6);
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q += 8;
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DEBUG(3,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d ntv %d\n", domainsidsize, ntversion));
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/*
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* we respond regadless of whether the machine is in our password
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* database. If it isn't then we let smbd send an appropriate error.
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* Let's ignore the SID.
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*/
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pull_ucs2_fstring(ascuser, uniuser);
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pull_ucs2_fstring(asccomp, unicomp);
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DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST user %s\n", ascuser));
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fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
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fstrcat(reply_name, my_name);
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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",
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asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
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LOGON_SAM_LOGON_RESPONSE ,lmnttoken));
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/* Construct reply. */
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q = outbuf;
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/* we want the simple version unless we are an ADS PDC..which means */
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/* never, at least for now */
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if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
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if (SVAL(uniuser, 0) == 0) {
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SSVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN); /* user unknown */
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} else {
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SSVAL(q, 0, LOGON_SAM_LOGON_RESPONSE);
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}
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q += 2;
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q += dos_PutUniCode(q, reply_name,
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sizeof(outbuf) - PTR_DIFF(q, outbuf),
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True);
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q += dos_PutUniCode(q, ascuser,
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sizeof(outbuf) - PTR_DIFF(q, outbuf),
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True);
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q += dos_PutUniCode(q, lp_workgroup(),
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sizeof(outbuf) - PTR_DIFF(q, outbuf),
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True);
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}
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#ifdef HAVE_ADS
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else {
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struct GUID domain_guid;
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UUID_FLAT flat_guid;
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char *domain;
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char *hostname;
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char *component, *dc, *q1;
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char *q_orig = q;
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int str_offset;
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char *saveptr = NULL;
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domain = get_mydnsdomname(talloc_tos());
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if (!domain) {
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DEBUG(2,
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("get_mydnsdomname failed.\n"));
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return;
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}
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hostname = get_myname(talloc_tos());
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if (!hostname) {
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DEBUG(2,
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("get_myname failed.\n"));
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return;
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}
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
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return;
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}
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if (SVAL(uniuser, 0) == 0) {
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SIVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN_EX); /* user unknown */
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} else {
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SIVAL(q, 0, LOGON_SAM_LOGON_RESPONSE_EX);
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}
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q += 4;
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SIVAL(q, 0, NBT_SERVER_PDC|NBT_SERVER_GC|NBT_SERVER_LDAP|NBT_SERVER_DS|
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NBT_SERVER_KDC|NBT_SERVER_TIMESERV|NBT_SERVER_CLOSEST|NBT_SERVER_WRITABLE);
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q += 4;
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/* Push Domain GUID */
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < UUID_FLAT_SIZE) {
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return;
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}
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if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
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DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
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return;
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}
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smb_uuid_pack(domain_guid, &flat_guid);
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memcpy(q, &flat_guid.info, UUID_FLAT_SIZE);
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q += UUID_FLAT_SIZE;
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/* Forest */
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str_offset = q - q_orig;
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dc = domain;
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q1 = q;
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while ((component = strtok_r(dc, ".", &saveptr)) != NULL) {
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dc = NULL;
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
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return;
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}
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size = push_ascii(&q[1], component,
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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0);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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}
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/* Unk0 */
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
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return;
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}
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SCVAL(q, 0, 0);
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q++;
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/* Domain */
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SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
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SCVAL(q, 1, str_offset & 0xFF);
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q += 2;
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/* Hostname */
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size = push_ascii(&q[1], hostname,
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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0);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 3) {
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return;
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}
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SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
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SCVAL(q, 1, str_offset & 0xFF);
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q += 2;
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/* NETBIOS of domain */
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size = push_ascii(&q[1], lp_workgroup(),
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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STR_UPPER);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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/* Unk1 */
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 2) {
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return;
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}
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SCVAL(q, 0, 0);
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q++;
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/* NETBIOS of hostname */
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size = push_ascii(&q[1], my_name,
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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0);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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/* Unk2 */
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
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return;
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}
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SCVAL(q, 0, 0);
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q++;
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/* User name */
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if (SVAL(uniuser, 0) != 0) {
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size = push_ascii(&q[1], ascuser,
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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0);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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}
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q_orig = q;
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/* Site name */
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
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return;
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}
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size = push_ascii(&q[1], "Default-First-Site-Name",
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sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
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0);
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if (size == (size_t)-1 || size > 0xff) {
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return;
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}
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SCVAL(q, 0, size);
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q += (size + 1);
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 18) {
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return;
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}
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/* Site name (2) */
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str_offset = q - q_orig;
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SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
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SCVAL(q, 1, str_offset & 0xFF);
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q += 2;
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SCVAL(q, 0, PTR_DIFF(q,q1));
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SCVAL(q, 1, 0x10); /* unknown */
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SIVAL(q, 0, 0x00000002);
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q += 4; /* unknown */
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SIVAL(q, 0, ntohl(ip.s_addr));
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q += 4;
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SIVAL(q, 0, 0x00000000);
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q += 4; /* unknown */
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SIVAL(q, 0, 0x00000000);
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q += 4; /* unknown */
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}
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#endif
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if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
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return;
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}
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/* tell the client what version we are */
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SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
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/* our ntversion */
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SSVAL(q, 4, 0xffff); /* our lmnttoken */
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SSVAL(q, 6, 0xffff); /* our lm20token */
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q += 8;
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dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
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pull_ascii_fstring(getdc_str, getdc);
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source_addr = SMB_STRDUP(inet_ntoa(dgram->header.source_ip));
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if (source_addr == NULL) {
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DEBUG(3, ("out of memory copying client"
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@ -793,13 +470,129 @@ logons are not enabled.\n", inet_ntoa(p->ip) ));
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return;
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}
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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",
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request.req.logon.computer_name,
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inet_ntoa(p->ip),
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request.req.logon.user_name,
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pdc_name,
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lp_workgroup(),
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LOGON_SAM_LOGON_RESPONSE,
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request.req.logon.lmnt_token));
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if (!request.req.logon.user_name) {
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user_unknown = true;
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}
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/* we want the simple version unless we are an ADS PDC..which means */
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/* never, at least for now */
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if ((request.req.logon.nt_version < (NETLOGON_NT_VERSION_1 | NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX_WITH_IP)) ||
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(SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
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struct NETLOGON_SAM_LOGON_RESPONSE_NT40 nt4;
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nt4.command = user_unknown ? LOGON_SAM_LOGON_USER_UNKNOWN :
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LOGON_SAM_LOGON_RESPONSE;
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nt4.pdc_name = pdc_name;
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nt4.user_name = request.req.logon.user_name;
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nt4.domain_name = lp_workgroup();
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nt4.nt_version = NETLOGON_NT_VERSION_1;
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nt4.lmnt_token = 0xffff;
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nt4.lm20_token = 0xffff;
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samlogon.ntver = NETLOGON_NT_VERSION_1;
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samlogon.data.nt4 = nt4;
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if (DEBUGLEVEL >= 10) {
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NDR_PRINT_DEBUG(NETLOGON_SAM_LOGON_RESPONSE_NT40, &nt4);
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}
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}
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#ifdef HAVE_ADS
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else {
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struct NETLOGON_SAM_LOGON_RESPONSE_EX nt5_ex;
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struct GUID domain_guid;
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struct nbt_sockaddr saddr;
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char *domain;
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const char *hostname;
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saddr.sockaddr_family = 2; /* AF_INET */
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saddr.pdc_ip = inet_ntoa(ip);
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saddr.remaining = data_blob_talloc_zero(talloc_tos(), 8); /* ??? */
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domain = get_mydnsdomname(talloc_tos());
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if (!domain) {
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DEBUG(2,("get_mydnsdomname failed.\n"));
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return;
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}
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hostname = get_mydnsfullname();
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if (!hostname) {
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DEBUG(2,("get_mydnsfullname failed.\n"));
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return;
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}
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if (!secrets_fetch_domain_guid(domain, &domain_guid)) {
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DEBUG(2,("Could not fetch DomainGUID for %s\n", domain));
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return;
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}
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nt5_ex.command = user_unknown ? LOGON_SAM_LOGON_USER_UNKNOWN_EX :
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LOGON_SAM_LOGON_RESPONSE_EX;
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nt5_ex.sbz = 0;
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nt5_ex.server_type = NBT_SERVER_PDC |
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NBT_SERVER_GC |
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NBT_SERVER_LDAP |
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NBT_SERVER_DS |
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NBT_SERVER_KDC |
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NBT_SERVER_TIMESERV |
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NBT_SERVER_CLOSEST |
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NBT_SERVER_WRITABLE;
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nt5_ex.domain_uuid = domain_guid;
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nt5_ex.forest = domain;
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nt5_ex.dns_domain = domain;
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nt5_ex.pdc_dns_name = hostname;
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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);
|
||||
}
|
||||
}
|
||||
#endif /* HAVE_ADS */
|
||||
|
||||
response.response_type = NETLOGON_SAMLOGON;
|
||||
response.data.samlogon = samlogon;
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
/*
|
||||
* handle delay.
|
||||
* packets requeued after delay are marked as
|
||||
* 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,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user