diff options
Diffstat (limited to 'source3/utils/nmblookup.c')
| -rw-r--r-- | source3/utils/nmblookup.c | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/source3/utils/nmblookup.c b/source3/utils/nmblookup.c new file mode 100644 index 0000000..9523f71 --- /dev/null +++ b/source3/utils/nmblookup.c @@ -0,0 +1,468 @@ +/* + Unix SMB/CIFS implementation. + NBT client - used to lookup netbios names + Copyright (C) Andrew Tridgell 1994-1998 + Copyright (C) Jelmer Vernooij 2003 (Conversion to popt) + + 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" +#include "lib/cmdline/cmdline.h" +#include "libsmb/nmblib.h" +#include "libsmb/namequery.h" +#include "lib/util/string_wrappers.h" + +static bool give_flags = false; +static bool use_bcast = true; +static bool got_bcast = false; +static struct sockaddr_storage bcast_addr; +static bool recursion_desired = false; +static bool translate_addresses = false; +static int ServerFD= -1; +static bool RootPort = false; +static bool find_status = false; + +/**************************************************************************** + Open the socket communication. +**************************************************************************/ + +static bool open_sockets(void) +{ + struct sockaddr_storage ss; + const char *sock_addr = lp_nbt_client_socket_address(); + + if (!interpret_string_addr(&ss, sock_addr, + AI_NUMERICHOST|AI_PASSIVE)) { + DEBUG(0,("open_sockets: unable to get socket address " + "from string %s\n", sock_addr)); + return false; + } + ServerFD = open_socket_in( + SOCK_DGRAM, &ss, (RootPort ? 137 : 0), true); + if (ServerFD < 0) { + if (RootPort) { + DBG_ERR("open_socket_in failed: %s\n", + strerror(-ServerFD)); + } else { + DBG_NOTICE("open_socket_in failed: %s\n", + strerror(-ServerFD)); + } + return false; + } + + set_socket_options( ServerFD, "SO_BROADCAST" ); + + DEBUG(3, ("Socket opened.\n")); + return true; +} + +/**************************************************************************** +turn a node status flags field into a string +****************************************************************************/ +static char *node_status_flags(unsigned char flags) +{ + static fstring ret; + fstrcpy(ret,""); + + fstrcat(ret, (flags & 0x80) ? "<GROUP> " : " "); + if ((flags & 0x60) == 0x00) fstrcat(ret,"B "); + if ((flags & 0x60) == 0x20) fstrcat(ret,"P "); + if ((flags & 0x60) == 0x40) fstrcat(ret,"M "); + if ((flags & 0x60) == 0x60) fstrcat(ret,"H "); + if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> "); + if (flags & 0x08) fstrcat(ret,"<CONFLICT> "); + if (flags & 0x04) fstrcat(ret,"<ACTIVE> "); + if (flags & 0x02) fstrcat(ret,"<PERMANENT> "); + + return ret; +} + +/**************************************************************************** + Turn the NMB Query flags into a string. +****************************************************************************/ + +static char *query_flags(int flags) +{ + static fstring ret1; + fstrcpy(ret1, ""); + + if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response "); + if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative "); + if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated "); + if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired "); + if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available "); + if (flags & NM_FLAGS_B) fstrcat(ret1, "Broadcast "); + + return ret1; +} + +/**************************************************************************** + Do a node status query. +****************************************************************************/ + +static bool do_node_status(const char *name, + int type, + struct sockaddr_storage *pss) +{ + struct nmb_name nname; + size_t count = 0; + size_t i, j; + struct node_status *addrs; + struct node_status_extra extra; + fstring cleanname; + char addr[INET6_ADDRSTRLEN]; + NTSTATUS status; + + print_sockaddr(addr, sizeof(addr), pss); + d_printf("Looking up status of %s\n",addr); + make_nmb_name(&nname, name, type); + status = node_status_query(talloc_tos(), &nname, pss, + &addrs, &count, &extra); + if (NT_STATUS_IS_OK(status)) { + for (i=0;i<count;i++) { + pull_ascii_fstring(cleanname, addrs[i].name); + for (j=0;cleanname[j];j++) { + if (!isprint((int)cleanname[j])) { + cleanname[j] = '.'; + } + } + d_printf("\t%-15s <%02x> - %s\n", + cleanname,addrs[i].type, + node_status_flags(addrs[i].flags)); + } + d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n", + extra.mac_addr[0], extra.mac_addr[1], + extra.mac_addr[2], extra.mac_addr[3], + extra.mac_addr[4], extra.mac_addr[5]); + d_printf("\n"); + TALLOC_FREE(addrs); + return true; + } else { + d_printf("No reply from %s\n\n",addr); + return false; + } +} + + +/**************************************************************************** + Send out one query. +****************************************************************************/ + +static bool query_one(const char *lookup, unsigned int lookup_type) +{ + size_t j, count = 0; + uint8_t flags = 0; + struct sockaddr_storage *ip_list=NULL; + NTSTATUS status = NT_STATUS_NOT_FOUND; + + if (got_bcast) { + char addr[INET6_ADDRSTRLEN]; + print_sockaddr(addr, sizeof(addr), &bcast_addr); + d_printf("querying %s on %s\n", lookup, addr); + status = name_query(lookup,lookup_type,use_bcast, + use_bcast?true:recursion_desired, + &bcast_addr, talloc_tos(), + &ip_list, &count, &flags); + } else { + status = name_resolve_bcast(talloc_tos(), + lookup, + lookup_type, + &ip_list, + &count); + } + + if (!NT_STATUS_IS_OK(status)) { + return false; + } + + if (give_flags) { + d_printf("Flags: %s\n", query_flags(flags)); + } + + for (j=0;j<count;j++) { + char addr[INET6_ADDRSTRLEN]; + if (translate_addresses) { + char h_name[MAX_DNS_NAME_LENGTH]; + h_name[0] = '\0'; + if (sys_getnameinfo((const struct sockaddr *)&ip_list[j], + sizeof(struct sockaddr_storage), + h_name, sizeof(h_name), + NULL, 0, + NI_NAMEREQD)) { + continue; + } + d_printf("%s, ", h_name); + } + print_sockaddr(addr, sizeof(addr), &ip_list[j]); + d_printf("%s %s<%02x>\n", addr,lookup, lookup_type); + /* We can only do find_status if the ip address returned + was valid - ie. name_query returned true. + */ + if (find_status) { + if (!do_node_status(lookup, lookup_type, &ip_list[j])) { + status = NT_STATUS_UNSUCCESSFUL; + } + } + } + + TALLOC_FREE(ip_list); + + return NT_STATUS_IS_OK(status); +} + + +/**************************************************************************** + main program +****************************************************************************/ +enum nmblookup_cmdline_options { + CMDLINE_RECURSIVE = 1, +}; + +int main(int argc, const char *argv[]) +{ + int opt; + unsigned int lookup_type = 0x0; + fstring lookup; + static bool find_master=False; + static bool lookup_by_ip = False; + poptContext pc = NULL; + TALLOC_CTX *frame = talloc_stackframe(); + int rc = 0; + bool ok; + + struct poptOption long_options[] = { + POPT_AUTOHELP + { + .longName = "broadcast", + .shortName = 'B', + .argInfo = POPT_ARG_STRING, + .arg = NULL, + .val = 'B', + .descrip = "Specify address to use for broadcasts", + .argDescrip = "BROADCAST-ADDRESS", + }, + { + .longName = "flags", + .shortName = 'f', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'f', + .descrip = "List the NMB flags returned", + }, + { + .longName = "unicast", + .shortName = 'U', + .argInfo = POPT_ARG_STRING, + .arg = NULL, + .val = 'U', + .descrip = "Specify address to use for unicast", + }, + { + .longName = "master-browser", + .shortName = 'M', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'M', + .descrip = "Search for a master browser", + }, + { + .longName = "recursion", + .shortName = 0, + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = CMDLINE_RECURSIVE, + .descrip = "Set recursion desired in package", + }, + { + .longName = "status", + .shortName = 'S', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'S', + .descrip = "Lookup node status as well", + }, + { + .longName = "translate", + .shortName = 'T', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'T', + .descrip = "Translate IP addresses into names", + }, + { + .longName = "root-port", + .shortName = 'r', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'r', + .descrip = "Use root port 137 (Win95 only replies to this)", + }, + { + .longName = "lookup-by-ip", + .shortName = 'A', + .argInfo = POPT_ARG_NONE, + .arg = NULL, + .val = 'A', + .descrip = "Do a node status on <name> as an IP Address", + }, + POPT_COMMON_SAMBA + POPT_COMMON_CONNECTION + POPT_COMMON_VERSION + POPT_TABLEEND + }; + + *lookup = 0; + + smb_init_locale(); + + ok = samba_cmdline_init(frame, + SAMBA_CMDLINE_CONFIG_CLIENT, + false /* require_smbconf */); + if (!ok) { + DBG_ERR("Failed to init cmdline parser!\n"); + TALLOC_FREE(frame); + exit(1); + } + + pc = samba_popt_get_context(getprogname(), + argc, + argv, + long_options, + POPT_CONTEXT_KEEP_FIRST); + if (pc == NULL) { + DBG_ERR("Failed to setup popt context!\n"); + TALLOC_FREE(frame); + exit(1); + } + + poptSetOtherOptionHelp(pc, "<NODE> ..."); + + while ((opt = poptGetNextOpt(pc)) != -1) { + switch (opt) { + case 'f': + give_flags = true; + break; + case 'M': + find_master = true; + break; + case CMDLINE_RECURSIVE: + recursion_desired = true; + break; + case 'S': + find_status = true; + break; + case 'r': + RootPort = true; + break; + case 'A': + lookup_by_ip = true; + break; + case 'B': + if (interpret_string_addr(&bcast_addr, + poptGetOptArg(pc), + NI_NUMERICHOST)) { + got_bcast = True; + use_bcast = True; + } + break; + case 'U': + if (interpret_string_addr(&bcast_addr, + poptGetOptArg(pc), + 0)) { + got_bcast = True; + use_bcast = False; + } + break; + case 'T': + translate_addresses = !translate_addresses; + break; + case POPT_ERROR_BADOPT: + fprintf(stderr, "\nInvalid option %s: %s\n\n", + poptBadOption(pc, 0), poptStrerror(opt)); + poptPrintUsage(pc, stderr, 0); + exit(1); + } + } + + poptGetArg(pc); /* Remove argv[0] */ + + if(!poptPeekArg(pc)) { + poptPrintUsage(pc, stderr, 0); + rc = 1; + goto out; + } + + if (!open_sockets()) { + rc = 1; + goto out; + } + + while(poptPeekArg(pc)) { + char *p; + struct in_addr ip; + size_t nbt_len; + + fstrcpy(lookup,poptGetArg(pc)); + + if(lookup_by_ip) { + struct sockaddr_storage ss; + ip = interpret_addr2(lookup); + in_addr_to_sockaddr_storage(&ss, ip); + fstrcpy(lookup,"*"); + if (!do_node_status(lookup, lookup_type, &ss)) { + rc = 1; + } + continue; + } + + if (find_master) { + if (*lookup == '-') { + fstrcpy(lookup,"\01\02__MSBROWSE__\02"); + lookup_type = 1; + } else { + lookup_type = 0x1d; + } + } + + p = strchr_m(lookup,'#'); + if (p) { + *p = '\0'; + sscanf(++p,"%x",&lookup_type); + } + + nbt_len = strlen(lookup); + if (nbt_len > MAX_NETBIOSNAME_LEN - 1) { + d_printf("The specified netbios name [%s] is too long!\n", + lookup); + continue; + } + + + if (!query_one(lookup, lookup_type)) { + rc = 1; + d_printf( "name_query failed to find name %s", lookup ); + if( 0 != lookup_type ) { + d_printf( "#%02x", lookup_type ); + } + d_printf( "\n" ); + } + } + +out: + poptFreeContext(pc); + TALLOC_FREE(frame); + return rc; +} |