/*
- Unix SMB/Netbios implementation.
- Version 3.0
+ Unix SMB/CIFS implementation.
client dgram calls
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Richard Sharpe 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#define NO_SYSLOG
-
#include "includes.h"
+#include "librpc/gen_ndr/messaging.h"
+#include "libsmb/clidgram.h"
/*
* cli_send_mailslot, send a mailslot for client code ...
*/
-int cli_send_mailslot(int dgram_sock, BOOL unique, char *mailslot,
- char *buf, int len,
- const char *srcname, int src_type,
- const char *dstname, int dest_type,
- struct in_addr dest_ip, struct in_addr src_ip,
- int dest_port, int src_port)
+static bool cli_send_mailslot(struct messaging_context *msg_ctx,
+ bool unique, const char *mailslot,
+ uint16 priority,
+ char *buf, int len,
+ const char *srcname, int src_type,
+ const char *dstname, int dest_type,
+ const struct sockaddr_storage *dest_ss,
+ int dgm_id)
{
- struct packet_struct p;
- struct dgram_packet *dgram = &p.packet.dgram;
- char *ptr, *p2;
- char tmp[4];
-
- memset((char *)&p, '\0', sizeof(p));
-
- /*
- * Next, build the DGRAM ...
- */
-
- /* DIRECT GROUP or UNIQUE datagram. */
- dgram->header.msg_type = unique ? 0x10 : 0x11;
- dgram->header.flags.node_type = M_NODE;
- dgram->header.flags.first = True;
- dgram->header.flags.more = False;
- dgram->header.dgm_id = ((unsigned)time(NULL)%(unsigned)0x7FFF) + ((unsigned)sys_getpid()%(unsigned)100);
- dgram->header.source_ip.s_addr = src_ip.s_addr;
- /*fprintf(stderr, "Source IP = %0X\n", dgram->header.source_ip); */
- dgram->header.source_port = ntohs(src_port);
- fprintf(stderr, "Source Port = %0X\n", dgram->header.source_port);
- dgram->header.dgm_length = 0; /* Let build_dgram() handle this. */
- dgram->header.packet_offset = 0;
-
- make_nmb_name(&dgram->source_name,srcname,src_type);
- make_nmb_name(&dgram->dest_name,dstname,dest_type);
-
- ptr = &dgram->data[0];
-
- /* Setup the smb part. */
- ptr -= 4; /* XXX Ugliness because of handling of tcp SMB length. */
- memcpy(tmp,ptr,4);
- set_message(ptr,17,17 + len,True);
- memcpy(ptr,tmp,4);
-
- SCVAL(ptr,smb_com,SMBtrans);
- SSVAL(ptr,smb_vwv1,len);
- SSVAL(ptr,smb_vwv11,len);
- SSVAL(ptr,smb_vwv12,70 + strlen(mailslot));
- SSVAL(ptr,smb_vwv13,3);
- SSVAL(ptr,smb_vwv14,1);
- SSVAL(ptr,smb_vwv15,1);
- SSVAL(ptr,smb_vwv16,2);
- p2 = smb_buf(ptr);
- pstrcpy(p2,mailslot);
- p2 = skip_string(p2,1);
-
- memcpy(p2,buf,len);
- p2 += len;
-
- dgram->datasize = PTR_DIFF(p2,ptr+4); /* +4 for tcp length. */
-
- p.ip = dest_ip;
- p.port = dest_port;
- p.fd = dgram_sock;
- p.timestamp = time(NULL);
- p.packet_type = DGRAM_PACKET;
-
- DEBUG(4,("send_mailslot: Sending to mailslot %s from %s IP %s ", mailslot,
- nmb_namestr(&dgram->source_name), inet_ntoa(src_ip)));
- DEBUG(4,("to %s IP %s\n", nmb_namestr(&dgram->dest_name), inet_ntoa(dest_ip)));
-
- return send_packet(&p);
-
+ struct packet_struct p;
+ struct dgram_packet *dgram = &p.packet.dgram;
+ char *ptr, *p2;
+ char tmp[4];
+ pid_t nmbd_pid;
+ char addr[INET6_ADDRSTRLEN];
+
+ if ((nmbd_pid = pidfile_pid("nmbd")) == 0) {
+ DEBUG(3, ("No nmbd found\n"));
+ return False;
+ }
+
+ if (dest_ss->ss_family != AF_INET) {
+ DEBUG(3, ("cli_send_mailslot: can't send to IPv6 address.\n"));
+ return false;
+ }
+
+ memset((char *)&p, '\0', sizeof(p));
+
+ /*
+ * Next, build the DGRAM ...
+ */
+
+ /* DIRECT GROUP or UNIQUE datagram. */
+ dgram->header.msg_type = unique ? 0x10 : 0x11;
+ dgram->header.flags.node_type = M_NODE;
+ dgram->header.flags.first = True;
+ dgram->header.flags.more = False;
+ dgram->header.dgm_id = dgm_id;
+ /* source ip is filled by nmbd */
+ dgram->header.dgm_length = 0; /* Let build_dgram() handle this. */
+ dgram->header.packet_offset = 0;
+
+ make_nmb_name(&dgram->source_name,srcname,src_type);
+ make_nmb_name(&dgram->dest_name,dstname,dest_type);
+
+ ptr = &dgram->data[0];
+
+ /* Setup the smb part. */
+ ptr -= 4; /* XXX Ugliness because of handling of tcp SMB length. */
+ memcpy(tmp,ptr,4);
+
+ 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);
+ SSVAL(ptr,smb_vwv1,len);
+ SSVAL(ptr,smb_vwv11,len);
+ SSVAL(ptr,smb_vwv12,70 + strlen(mailslot));
+ SSVAL(ptr,smb_vwv13,3);
+ SSVAL(ptr,smb_vwv14,1);
+ SSVAL(ptr,smb_vwv15,priority);
+ SSVAL(ptr,smb_vwv16,2);
+ p2 = smb_buf(ptr);
+ fstrcpy(p2,mailslot);
+ p2 = skip_string(ptr,MAX_DGRAM_SIZE,p2);
+ if (!p2) {
+ return False;
+ }
+
+ memcpy(p2,buf,len);
+ p2 += len;
+
+ 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.timestamp = time(NULL);
+
+ DEBUG(4,("send_mailslot: Sending to mailslot %s from %s ",
+ mailslot, nmb_namestr(&dgram->source_name)));
+ print_sockaddr(addr, sizeof(addr), dest_ss);
+
+ DEBUGADD(4,("to %s IP %s\n", nmb_namestr(&dgram->dest_name), addr));
+
+ return NT_STATUS_IS_OK(messaging_send_buf(msg_ctx,
+ pid_to_procid(nmbd_pid),
+ MSG_SEND_PACKET,
+ (uint8 *)&p, sizeof(p)));
}
-/*
- * cli_get_response: Get a response ...
- */
-int cli_get_response(int dgram_sock, BOOL unique, char *mailslot, char *buf, int bufsiz)
+static const char *mailslot_name(TALLOC_CTX *mem_ctx, struct in_addr dc_ip)
{
- struct packet_struct *packet;
-
- packet = receive_dgram_packet(dgram_sock, 5, mailslot);
-
- if (packet) { /* We got one, pull what we want out of the SMB data ... */
-
- struct dgram_packet *dgram = &packet->packet.dgram;
-
- /*
- * We should probably parse the SMB, but for now, we will pull what
- * from fixed, known locations ...
- */
-
- /* Copy the data to buffer, respecting sizes ... */
-
- bcopy(&dgram->data[92], buf, MIN(bufsiz, (dgram->datasize - 92)));
-
- }
- else
- return -1;
-
- return 0;
-
+ return talloc_asprintf(mem_ctx, "%s%X",
+ NBT_MAILSLOT_GETDC, dc_ip.s_addr);
}
-/*
- * cli_get_backup_list: Send a get backup list request ...
- */
-
-static char cli_backup_list[1024];
-
-int cli_get_backup_list(const char *myname, const char *send_to_name)
+bool send_getdc_request(TALLOC_CTX *mem_ctx,
+ struct messaging_context *msg_ctx,
+ const struct sockaddr_storage *dc_ss,
+ const char *domain_name,
+ const struct dom_sid *sid,
+ uint32_t nt_version,
+ int dgm_id)
{
- char outbuf[15];
- char *p;
- struct in_addr sendto_ip, my_ip;
- int dgram_sock;
- struct sockaddr_in sock_out;
- socklen_t name_size;
-
- if (!resolve_name(send_to_name, &sendto_ip, 0x1d)) {
-
- DEBUG(0, ("Could not resolve name: %s<1D>\n", send_to_name));
- return False;
-
- }
-
- my_ip.s_addr = inet_addr("0.0.0.0");
-
- if (!resolve_name(myname, &my_ip, 0x00)) { /* FIXME: Call others here */
-
- DEBUG(0, ("Could not resolve name: %s<00>\n", myname));
-
- }
-
- if ((dgram_sock = open_socket_out(SOCK_DGRAM, &sendto_ip, 138, LONG_CONNECT_TIMEOUT)) < 0) {
-
- DEBUG(4, ("open_sock_out failed ..."));
- return False;
-
- }
-
- /* Make it a broadcast socket ... */
-
- set_socket_options(dgram_sock, "SO_BROADCAST");
-
- /* Make it non-blocking??? */
-
- if (fcntl(dgram_sock, F_SETFL, O_NONBLOCK) < 0) {
-
- DEBUG(0, ("Unable to set non blocking on dgram sock\n"));
-
- }
-
- /* Now, bind a local addr to it ... Try port 138 first ... */
-
- memset((char *)&sock_out, '\0', sizeof(sock_out));
- sock_out.sin_addr.s_addr = INADDR_ANY;
- sock_out.sin_port = htons(138);
- sock_out.sin_family = AF_INET;
-
- if (bind(dgram_sock, (struct sockaddr *)&sock_out, sizeof(sock_out)) < 0) {
-
- /* Try again on any port ... */
-
- sock_out.sin_port = INADDR_ANY;
-
- if (bind(dgram_sock, (struct sockaddr *)&sock_out, sizeof(sock_out)) < 0) {
-
- DEBUG(4, ("failed to bind socket to address ...\n"));
- return False;
-
- }
-
- }
-
- /* Now, figure out what socket name we were bound to. We want the port */
-
- name_size = sizeof(sock_out);
-
- getsockname(dgram_sock, (struct sockaddr *)&sock_out, &name_size);
-
- DEBUG(5, ("Socket bound to IP:%s, port: %d\n", inet_ntoa(sock_out.sin_addr), ntohs(sock_out.sin_port)));
-
- /* Now, build the request */
-
- memset(cli_backup_list, '\0', sizeof(cli_backup_list));
- memset(outbuf, '\0', sizeof(outbuf));
-
- p = outbuf;
-
- SCVAL(p, 0, ANN_GetBackupListReq);
- p++;
-
- SCVAL(p, 0, 1); /* Count pointer ... */
- p++;
-
- SIVAL(p, 0, 1); /* The sender's token ... */
- p += 4;
-
- cli_send_mailslot(dgram_sock, True, "\\MAILSLOT\\BROWSE", outbuf,
- PTR_DIFF(p, outbuf), myname, 0, send_to_name,
- 0x1d, sendto_ip, my_ip, 138, sock_out.sin_port);
-
- /* We should check the error and return if we got one */
-
- /* Now, get the response ... */
-
- cli_get_response(dgram_sock, True, "\\MAILSLOT\\BROWSE", cli_backup_list, sizeof(cli_backup_list));
-
- /* Should check the response here ... FIXME */
-
- close(dgram_sock);
-
- return True;
-
+ 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;
+ }
+
+ if (sid) {
+ my_sid = *sid;
+ }
+
+ dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
+ my_mailslot = mailslot_name(mem_ctx, dc_ip);
+ if (!my_mailslot) {
+ return false;
+ }
+
+ my_acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
+ if (!my_acct_name) {
+ return false;
+ }
+
+ 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);
+ }
+
+ ndr_err = ndr_push_struct_blob(&blob, mem_ctx, &packet,
+ (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return false;
+ }
+
+ return cli_send_mailslot(msg_ctx,
+ false, NBT_MAILSLOT_NTLOGON, 0,
+ (char *)blob.data, blob.length,
+ global_myname(), 0, domain_name, 0x1c,
+ dc_ss, dgm_id);
}
-/*
- * cli_get_backup_server: Get the backup list and retrieve a server from it
- */
-
-int cli_get_backup_server(char *my_name, char *target, char *servername, int namesize)
+bool receive_getdc_response(TALLOC_CTX *mem_ctx,
+ struct sockaddr_storage *dc_ss,
+ const char *domain_name,
+ int dgm_id,
+ uint32_t *nt_version,
+ const char **dc_name,
+ struct netlogon_samlogon_response **samlogon_response)
{
+ 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;
+ }
+
+ dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
+
+ my_mailslot = mailslot_name(mem_ctx, dc_ip);
+ if (!my_mailslot) {
+ return false;
+ }
+
+ packet = receive_unexpected(DGRAM_PACKET, dgm_id, my_mailslot);
+
+ if (packet == NULL) {
+ DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
+ return False;
+ }
+
+ DEBUG(5, ("Received packet for %s\n", my_mailslot));
+
+ blob = data_blob_const(packet->packet.dgram.data,
+ packet->packet.dgram.datasize);
+
+ if (blob.length < 4) {
+ DEBUG(0,("invalid length: %d\n", (int)blob.length));
+ return false;
+ }
+
+ if (RIVAL(blob.data,0) != DGRAM_SMB) {
+ DEBUG(0,("invalid packet\n"));
+ return false;
+ }
+
+ blob.data += 4;
+ blob.length -= 4;
+
+ ndr_err = ndr_pull_union_blob_all(&blob, mem_ctx, &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;
+ }
+
+ if (p.smb.smb_command != SMB_TRANSACTION) {
+ DEBUG(0,("invalid smb_command: %d\n", p.smb.smb_command));
+ return false;
+ }
+
+ if (DEBUGLEVEL >= 10) {
+ NDR_PRINT_DEBUG(dgram_smb_packet, &p);
+ }
+
+ blob = p.smb.body.trans.data;
+
+ r = TALLOC_ZERO_P(mem_ctx, struct netlogon_samlogon_response);
+ if (!r) {
+ return false;
+ }
+
+ status = pull_netlogon_samlogon_response(&blob, mem_ctx, r);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(r);
+ return false;
+ }
+
+ map_netlogon_samlogon_response(r);
+
+ /* do we still need this ? */
+ *nt_version = r->ntver;
+
+ returned_domain = r->data.nt5_ex.domain_name;
+ returned_dc = r->data.nt5_ex.pdc_name;
+
+ if (!strequal(returned_domain, domain_name)) {
+ DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
+ domain_name, returned_domain));
+ TALLOC_FREE(r);
+ return false;
+ }
+
+ *dc_name = talloc_strdup(mem_ctx, returned_dc);
+ if (!*dc_name) {
+ TALLOC_FREE(r);
+ return false;
+ }
+
+ if (**dc_name == '\\') *dc_name += 1;
+ if (**dc_name == '\\') *dc_name += 1;
+
+ if (samlogon_response) {
+ *samlogon_response = r;
+ } else {
+ TALLOC_FREE(r);
+ }
- /* Get the backup list first. We could pull this from the cache later */
-
- cli_get_backup_list(my_name, target); /* FIXME: Check the response */
-
- if (!cli_backup_list[0]) { /* Empty list ... try again */
-
- cli_get_backup_list(my_name, target);
-
- }
-
- strncpy(servername, cli_backup_list, MIN(16, namesize));
-
- return True;
+ DEBUG(10, ("GetDC gave name %s for domain %s\n",
+ *dc_name, returned_domain));
+ return True;
}
-
-
-
git.samba.org / metze / samba / wip.git / blobdiff