/* Setup the smb part. */
ptr -= 4; /* XXX Ugliness because of handling of tcp SMB length. */
memcpy(tmp,ptr,4);
- set_message(ptr,17,strlen(mailslot) + 1 + len,True);
+
+ if (smb_size + 17*2 + strlen(mailslot) + 1 + len > MAX_DGRAM_SIZE) {
+ DEBUG(0, ("cli_send_mailslot: Cannot write beyond end of packet\n"));
+ return False;
+ }
+
+ cli_set_message(ptr,17,strlen(mailslot) + 1 + len,True);
memcpy(ptr,tmp,4);
SCVAL(ptr,smb_com,SMBtrans);
dgram->datasize = PTR_DIFF(p2,ptr+4); /* +4 for tcp length. */
p.packet_type = DGRAM_PACKET;
- p.ip = ((const struct sockaddr_in *)&dest_ss)->sin_addr;
+ p.ip = ((const struct sockaddr_in *)dest_ss)->sin_addr;
p.timestamp = time(NULL);
DEBUG(4,("send_mailslot: Sending to mailslot %s from %s ",
(uint8 *)&p, sizeof(p)));
}
-/*
- * cli_get_response: Get a response ...
- */
-bool cli_get_response(const char *mailslot, char *buf, int bufsiz)
+static const char *mailslot_name(TALLOC_CTX *mem_ctx, struct in_addr dc_ip)
+{
+ return talloc_asprintf(mem_ctx, "%s%X",
+ NBT_MAILSLOT_GETDC, dc_ip.s_addr);
+}
+
+bool send_getdc_request(TALLOC_CTX *mem_ctx,
+ struct messaging_context *msg_ctx,
+ struct sockaddr_storage *dc_ss,
+ const char *domain_name,
+ const DOM_SID *sid,
+ uint32_t nt_version)
{
- struct packet_struct *p;
+ struct in_addr dc_ip;
+ const char *my_acct_name = NULL;
+ const char *my_mailslot = NULL;
+ struct nbt_netlogon_packet packet;
+ struct NETLOGON_SAM_LOGON_REQUEST *s;
+ enum ndr_err_code ndr_err;
+ DATA_BLOB blob;
+ struct dom_sid my_sid;
+
+ ZERO_STRUCT(packet);
+ ZERO_STRUCT(my_sid);
+
+ if (dc_ss->ss_family != AF_INET) {
+ return false;
+ }
- p = receive_unexpected(DGRAM_PACKET, 0, mailslot);
+ if (sid) {
+ my_sid = *sid;
+ }
- if (p == NULL)
- return False;
+ dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
+ my_mailslot = mailslot_name(mem_ctx, dc_ip);
+ if (!my_mailslot) {
+ return false;
+ }
- memcpy(buf, &p->packet.dgram.data[92],
- MIN(bufsiz, p->packet.dgram.datasize-92));
+ my_acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
+ if (!my_acct_name) {
+ return false;
+ }
- return True;
-}
+ packet.command = LOGON_SAM_LOGON_REQUEST;
+ s = &packet.req.logon;
+
+ s->request_count = 0;
+ s->computer_name = global_myname();
+ s->user_name = my_acct_name;
+ s->mailslot_name = my_mailslot;
+ s->acct_control = ACB_WSTRUST;
+ s->sid = my_sid;
+ s->nt_version = nt_version;
+ s->lmnt_token = 0xffff;
+ s->lm20_token = 0xffff;
+
+ if (DEBUGLEVEL >= 10) {
+ NDR_PRINT_DEBUG(nbt_netlogon_packet, &packet);
+ }
-/*
- * cli_get_backup_list: Send a get backup list request ...
- */
+ ndr_err = ndr_push_struct_blob(&blob, mem_ctx, NULL, &packet,
+ (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return false;
+ }
-static char cli_backup_list[1024];
+ return cli_send_mailslot(msg_ctx,
+ false, NBT_MAILSLOT_NTLOGON, 0,
+ (char *)blob.data, blob.length,
+ global_myname(), 0, domain_name, 0x1c,
+ dc_ss);
+}
-int cli_get_backup_list(struct messaging_context *msg_ctx,
- const char *myname, const char *send_to_name)
+bool receive_getdc_response(TALLOC_CTX *mem_ctx,
+ struct sockaddr_storage *dc_ss,
+ const char *domain_name,
+ uint32_t *nt_version,
+ const char **dc_name,
+ struct netlogon_samlogon_response **_r)
{
- pstring outbuf;
- char *p;
- struct sockaddr_storage sendto_ss;
-
- if (!resolve_name(send_to_name, &sendto_ss, 0x1d)) {
+ struct packet_struct *packet;
+ const char *my_mailslot = NULL;
+ struct in_addr dc_ip;
+ DATA_BLOB blob;
+ struct netlogon_samlogon_response r;
+ union dgram_message_body p;
+ enum ndr_err_code ndr_err;
+ NTSTATUS status;
+
+ const char *returned_dc = NULL;
+ const char *returned_domain = NULL;
+
+ if (dc_ss->ss_family != AF_INET) {
+ return false;
+ }
- DEBUG(0, ("Could not resolve name: %s<1D>\n", send_to_name));
- return False;
+ dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
+ my_mailslot = mailslot_name(mem_ctx, dc_ip);
+ if (!my_mailslot) {
+ return false;
}
- memset(cli_backup_list, '\0', sizeof(cli_backup_list));
- memset(outbuf, '\0', sizeof(outbuf));
+ packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
- p = outbuf;
+ if (packet == NULL) {
+ DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
+ return False;
+ }
- SCVAL(p, 0, ANN_GetBackupListReq);
- p++;
+ DEBUG(5, ("Received packet for %s\n", my_mailslot));
- SCVAL(p, 0, 1); /* Count pointer ... */
- p++;
+ blob = data_blob_const(packet->packet.dgram.data,
+ packet->packet.dgram.datasize);
- SIVAL(p, 0, 1); /* The sender's token ... */
- p += 4;
+ if (blob.length < 4) {
+ DEBUG(0,("invalid length: %d\n", (int)blob.length));
+ return false;
+ }
- cli_send_mailslot(msg_ctx, True, "\\MAILSLOT\\BROWSE", 1, outbuf,
- PTR_DIFF(p, outbuf), myname, 0, send_to_name,
- 0x1d, &sendto_ss);
+ if (RIVAL(blob.data,0) != DGRAM_SMB) {
+ DEBUG(0,("invalid packet\n"));
+ return false;
+ }
- /* We should check the error and return if we got one */
+ blob.data += 4;
+ blob.length -= 4;
- /* Now, get the response ... */
+ ndr_err = ndr_pull_union_blob_all(&blob, mem_ctx, NULL, &p, DGRAM_SMB,
+ (ndr_pull_flags_fn_t)ndr_pull_dgram_smb_packet);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0,("failed to parse packet\n"));
+ return false;
+ }
- cli_get_response("\\MAILSLOT\\BROWSE",
- cli_backup_list, sizeof(cli_backup_list));
+ if (p.smb.smb_command != SMB_TRANSACTION) {
+ DEBUG(0,("invalid smb_command: %d\n", p.smb.smb_command));
+ return false;
+ }
- return True;
+ if (DEBUGLEVEL >= 10) {
+ NDR_PRINT_DEBUG(dgram_smb_packet, &p);
+ }
-}
+ blob = p.smb.body.trans.data;
-/*
- * cli_get_backup_server: Get the backup list and retrieve a server from it
- */
+ ZERO_STRUCT(r);
-int cli_get_backup_server(struct messaging_context *msg_ctx,
- char *my_name, char *target, char *servername,
- int namesize)
-{
+ status = pull_netlogon_samlogon_response(&blob, mem_ctx, NULL, &r);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+
+ map_netlogon_samlogon_response(&r);
- /* Get the backup list first. We could pull this from the cache later */
+ /* do we still need this ? */
+ *nt_version = r.ntver;
- cli_get_backup_list(msg_ctx, my_name, target); /* FIXME: Check the response */
+ returned_domain = r.data.nt5_ex.domain;
+ returned_dc = r.data.nt5_ex.pdc_name;
- if (!cli_backup_list[0]) { /* Empty list ... try again */
+ if (!strequal(returned_domain, domain_name)) {
+ DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
+ domain_name, returned_domain));
+ return false;
+ }
- cli_get_backup_list(msg_ctx, my_name, target);
+ *dc_name = talloc_strdup(mem_ctx, returned_dc);
+ if (!*dc_name) {
+ return false;
+ }
- }
+ if (**dc_name == '\\') *dc_name += 1;
+ if (**dc_name == '\\') *dc_name += 1;
- strncpy(servername, cli_backup_list, MIN(16, namesize));
+ if (_r) {
+ *_r = (struct netlogon_samlogon_response *)talloc_memdup(
+ mem_ctx, &r, sizeof(struct netlogon_samlogon_response));
+ if (!*_r) {
+ return false;
+ }
+ }
- return True;
+ DEBUG(10, ("GetDC gave name %s for domain %s\n",
+ *dc_name, returned_domain));
+ return True;
}
+
git.samba.org / ira / wip.git / blobdiff