/* Unix SMB/CIFS implementation. client dgram calls Copyright (C) Andrew Tridgell 1994-1998 Copyright (C) Richard Sharpe 2001 Copyright (C) John Terpstra 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" /* * cli_send_mailslot, send a mailslot for client code ... */ 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, struct in_addr dest_ip) { struct packet_struct p; struct dgram_packet *dgram = &p.packet.dgram; char *ptr, *p2; char tmp[4]; pid_t nmbd_pid; if ((nmbd_pid = pidfile_pid("nmbd")) == 0) { DEBUG(3, ("No nmbd found\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 = ((unsigned)time(NULL)%(unsigned)0x7FFF) + ((unsigned)sys_getpid()%(unsigned)100); /* 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); 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 = dest_ip; p.timestamp = time(NULL); DEBUG(4,("send_mailslot: Sending to mailslot %s from %s ", mailslot, nmb_namestr(&dgram->source_name))); DEBUGADD(4,("to %s IP %s\n", nmb_namestr(&dgram->dest_name), inet_ntoa(dest_ip))); 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 ... */ bool cli_get_response(const char *mailslot, char *buf, int bufsiz) { struct packet_struct *p; p = receive_unexpected(DGRAM_PACKET, 0, mailslot); if (p == NULL) return False; memcpy(buf, &p->packet.dgram.data[92], MIN(bufsiz, p->packet.dgram.datasize-92)); return True; } /* * cli_get_backup_list: Send a get backup list request ... */ static char cli_backup_list[1024]; int cli_get_backup_list(struct messaging_context *msg_ctx, const char *myname, const char *send_to_name) { pstring outbuf; char *p; struct in_addr sendto_ip; if (!resolve_name(send_to_name, &sendto_ip, 0x1d)) { DEBUG(0, ("Could not resolve name: %s<1D>\n", send_to_name)); return False; } 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(msg_ctx, True, "\\MAILSLOT\\BROWSE", 1, outbuf, PTR_DIFF(p, outbuf), myname, 0, send_to_name, 0x1d, sendto_ip); /* We should check the error and return if we got one */ /* Now, get the response ... */ cli_get_response("\\MAILSLOT\\BROWSE", cli_backup_list, sizeof(cli_backup_list)); return True; } /* * cli_get_backup_server: Get the backup list and retrieve a server from it */ int cli_get_backup_server(struct messaging_context *msg_ctx, char *my_name, char *target, char *servername, int namesize) { /* Get the backup list first. We could pull this from the cache later */ cli_get_backup_list(msg_ctx, my_name, target); /* FIXME: Check the response */ if (!cli_backup_list[0]) { /* Empty list ... try again */ cli_get_backup_list(msg_ctx, my_name, target); } strncpy(servername, cli_backup_list, MIN(16, namesize)); return True; }