| /* |
| * DNS support |
| * |
| * Copyright (C) 2006 Hans Leidekker |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| #include "wine/debug.h" |
| |
| #include <stdarg.h> |
| #include <string.h> |
| #include <sys/types.h> |
| |
| #ifdef HAVE_NETINET_IN_H |
| # include <netinet/in.h> |
| #endif |
| #ifdef HAVE_ARPA_NAMESER_H |
| # include <arpa/nameser.h> |
| #endif |
| #ifdef HAVE_RESOLV_H |
| # include <resolv.h> |
| #endif |
| #ifdef HAVE_NETDB_H |
| # include <netdb.h> |
| #endif |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winerror.h" |
| #include "winnls.h" |
| #include "windns.h" |
| #include "nb30.h" |
| |
| #include "dnsapi.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(dnsapi); |
| |
| #ifdef HAVE_RESOLV |
| |
| /* call res_init() just once because of a bug in Mac OS X 10.4 */ |
| /* call once per thread on systems that have per-thread _res */ |
| static void initialise_resolver( void ) |
| { |
| if ((_res.options & RES_INIT) == 0) |
| res_init(); |
| } |
| |
| static const char *dns_section_to_str( ns_sect section ) |
| { |
| switch (section) |
| { |
| case ns_s_qd: return "Question"; |
| case ns_s_an: return "Answer"; |
| case ns_s_ns: return "Authority"; |
| case ns_s_ar: return "Additional"; |
| default: |
| { |
| static char tmp[5]; |
| FIXME( "unknown section: 0x%02x\n", section ); |
| sprintf( tmp, "0x%02x", section ); |
| return tmp; |
| } |
| } |
| } |
| |
| static unsigned long dns_map_options( DWORD options ) |
| { |
| unsigned long ret = 0; |
| |
| if (options == DNS_QUERY_STANDARD) |
| return RES_DEFAULT; |
| |
| if (options & DNS_QUERY_ACCEPT_TRUNCATED_RESPONSE) |
| ret |= RES_IGNTC; |
| if (options & DNS_QUERY_USE_TCP_ONLY) |
| ret |= RES_USEVC; |
| if (options & DNS_QUERY_NO_RECURSION) |
| ret &= ~RES_RECURSE; |
| if (options & DNS_QUERY_NO_LOCAL_NAME) |
| ret &= ~RES_DNSRCH; |
| if (options & DNS_QUERY_NO_HOSTS_FILE) |
| ret |= RES_NOALIASES; |
| if (options & DNS_QUERY_TREAT_AS_FQDN) |
| ret &= ~RES_DEFNAMES; |
| |
| if (options & DNS_QUERY_DONT_RESET_TTL_VALUES) |
| FIXME( "option DNS_QUERY_DONT_RESET_TTL_VALUES not implemented\n" ); |
| if (options & DNS_QUERY_RESERVED) |
| FIXME( "option DNS_QUERY_RESERVED not implemented\n" ); |
| if (options & DNS_QUERY_WIRE_ONLY) |
| FIXME( "option DNS_QUERY_WIRE_ONLY not implemented\n" ); |
| if (options & DNS_QUERY_NO_WIRE_QUERY) |
| FIXME( "option DNS_QUERY_NO_WIRE_QUERY not implemented\n" ); |
| if (options & DNS_QUERY_BYPASS_CACHE) |
| FIXME( "option DNS_QUERY_BYPASS_CACHE not implemented\n" ); |
| if (options & DNS_QUERY_RETURN_MESSAGE) |
| FIXME( "option DNS_QUERY_RETURN_MESSAGE not implemented\n" ); |
| |
| if (options & DNS_QUERY_NO_NETBT) |
| TRACE( "netbios query disabled\n" ); |
| |
| return ret; |
| } |
| |
| static DNS_STATUS dns_map_error( int error ) |
| { |
| switch (error) |
| { |
| case ns_r_noerror: return ERROR_SUCCESS; |
| case ns_r_formerr: return DNS_ERROR_RCODE_FORMAT_ERROR; |
| case ns_r_servfail: return DNS_ERROR_RCODE_SERVER_FAILURE; |
| case ns_r_nxdomain: return DNS_ERROR_RCODE_NAME_ERROR; |
| case ns_r_notimpl: return DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| case ns_r_refused: return DNS_ERROR_RCODE_REFUSED; |
| case ns_r_yxdomain: return DNS_ERROR_RCODE_YXDOMAIN; |
| case ns_r_yxrrset: return DNS_ERROR_RCODE_YXRRSET; |
| case ns_r_nxrrset: return DNS_ERROR_RCODE_NXRRSET; |
| case ns_r_notauth: return DNS_ERROR_RCODE_NOTAUTH; |
| case ns_r_notzone: return DNS_ERROR_RCODE_NOTZONE; |
| default: |
| FIXME( "unmapped error code: %d\n", error ); |
| return DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| } |
| } |
| |
| static DNS_STATUS dns_map_h_errno( int error ) |
| { |
| switch (error) |
| { |
| case NO_DATA: |
| case HOST_NOT_FOUND: return DNS_ERROR_RCODE_NAME_ERROR; |
| case TRY_AGAIN: return DNS_ERROR_RCODE_SERVER_FAILURE; |
| case NO_RECOVERY: return DNS_ERROR_RCODE_REFUSED; |
| case NETDB_INTERNAL: return DNS_ERROR_RCODE; |
| default: |
| FIXME( "unmapped error code: %d\n", error ); |
| return DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| } |
| } |
| |
| static char *dns_dname_from_msg( ns_msg msg, const unsigned char *pos ) |
| { |
| int len; |
| char *str, dname[NS_MAXDNAME] = "."; |
| |
| /* returns *compressed* length, ignore it */ |
| len = dns_ns_name_uncompress( ns_msg_base( msg ), ns_msg_end( msg ), |
| pos, dname, sizeof(dname) ); |
| |
| len = strlen( dname ); |
| str = heap_alloc( len + 1 ); |
| if (str) strcpy( str, dname ); |
| return str; |
| } |
| |
| static char *dns_str_from_rdata( const unsigned char *rdata ) |
| { |
| char *str; |
| unsigned int len = rdata[0]; |
| |
| str = heap_alloc( len + 1 ); |
| if (str) |
| { |
| memcpy( str, ++rdata, len ); |
| str[len] = '\0'; |
| } |
| return str; |
| } |
| |
| static unsigned int dns_get_record_size( const ns_rr *rr ) |
| { |
| const unsigned char *pos = rr->rdata; |
| unsigned int num = 0, size = sizeof(DNS_RECORDA); |
| |
| switch (rr->type) |
| { |
| case ns_t_key: |
| { |
| pos += sizeof(WORD) + sizeof(BYTE) + sizeof(BYTE); |
| size += rr->rdata + rr->rdlength - pos - 1; |
| break; |
| } |
| case ns_t_sig: |
| { |
| pos += sizeof(PCHAR) + sizeof(WORD) + 2 * sizeof(BYTE); |
| pos += 3 * sizeof(DWORD) + 2 * sizeof(WORD); |
| size += rr->rdata + rr->rdlength - pos - 1; |
| break; |
| } |
| case ns_t_hinfo: |
| case ns_t_isdn: |
| case ns_t_txt: |
| case ns_t_x25: |
| { |
| while (pos[0] && pos < rr->rdata + rr->rdlength) |
| { |
| num++; |
| pos += pos[0] + 1; |
| } |
| size += (num - 1) * sizeof(PCHAR); |
| break; |
| } |
| case ns_t_null: |
| { |
| size += rr->rdlength - 1; |
| break; |
| } |
| case ns_t_nxt: |
| case ns_t_wks: |
| case 0xff01: /* WINS */ |
| { |
| FIXME( "unhandled type: %s\n", dns_type_to_str( rr->type ) ); |
| break; |
| } |
| default: |
| break; |
| } |
| return size; |
| } |
| |
| static DNS_STATUS dns_copy_rdata( ns_msg msg, const ns_rr *rr, DNS_RECORDA *r, WORD *dlen ) |
| { |
| DNS_STATUS ret = ERROR_SUCCESS; |
| const unsigned char *pos = rr->rdata; |
| unsigned int i, size; |
| |
| switch (rr->type) |
| { |
| case ns_t_a: |
| { |
| r->Data.A.IpAddress = *(const DWORD *)pos; |
| *dlen = sizeof(DNS_A_DATA); |
| break; |
| } |
| case ns_t_aaaa: |
| { |
| for (i = 0; i < sizeof(IP6_ADDRESS)/sizeof(DWORD); i++) |
| { |
| r->Data.AAAA.Ip6Address.IP6Dword[i] = *(const DWORD *)pos; |
| pos += sizeof(DWORD); |
| } |
| |
| *dlen = sizeof(DNS_AAAA_DATA); |
| break; |
| } |
| case ns_t_key: |
| { |
| /* FIXME: byte order? */ |
| r->Data.KEY.wFlags = *(const WORD *)pos; pos += sizeof(WORD); |
| r->Data.KEY.chProtocol = *pos++; |
| r->Data.KEY.chAlgorithm = *pos++; |
| |
| size = rr->rdata + rr->rdlength - pos; |
| |
| for (i = 0; i < size; i++) |
| r->Data.KEY.Key[i] = *pos++; |
| |
| *dlen = sizeof(DNS_KEY_DATA) + (size - 1) * sizeof(BYTE); |
| break; |
| } |
| case ns_t_rp: |
| case ns_t_minfo: |
| { |
| r->Data.MINFO.pNameMailbox = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.MINFO.pNameMailbox) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| if (dns_ns_name_skip( &pos, ns_msg_end( msg ) ) < 0) |
| return DNS_ERROR_BAD_PACKET; |
| |
| r->Data.MINFO.pNameErrorsMailbox = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.MINFO.pNameErrorsMailbox) |
| { |
| heap_free( r->Data.MINFO.pNameMailbox ); |
| return ERROR_NOT_ENOUGH_MEMORY; |
| } |
| |
| *dlen = sizeof(DNS_MINFO_DATAA); |
| break; |
| } |
| case ns_t_afsdb: |
| case ns_t_rt: |
| case ns_t_mx: |
| { |
| r->Data.MX.wPreference = ntohs( *(const WORD *)pos ); |
| r->Data.MX.pNameExchange = dns_dname_from_msg( msg, pos + sizeof(WORD) ); |
| if (!r->Data.MX.pNameExchange) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| *dlen = sizeof(DNS_MX_DATAA); |
| break; |
| } |
| case ns_t_null: |
| { |
| r->Data.Null.dwByteCount = rr->rdlength; |
| memcpy( r->Data.Null.Data, rr->rdata, rr->rdlength ); |
| |
| *dlen = sizeof(DNS_NULL_DATA) + rr->rdlength - 1; |
| break; |
| } |
| case ns_t_cname: |
| case ns_t_ns: |
| case ns_t_mb: |
| case ns_t_md: |
| case ns_t_mf: |
| case ns_t_mg: |
| case ns_t_mr: |
| case ns_t_ptr: |
| { |
| r->Data.PTR.pNameHost = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.PTR.pNameHost) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| *dlen = sizeof(DNS_PTR_DATAA); |
| break; |
| } |
| case ns_t_sig: |
| { |
| r->Data.SIG.pNameSigner = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.SIG.pNameSigner) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| if (dns_ns_name_skip( &pos, ns_msg_end( msg ) ) < 0) |
| return DNS_ERROR_BAD_PACKET; |
| |
| /* FIXME: byte order? */ |
| r->Data.SIG.wTypeCovered = *(const WORD *)pos; pos += sizeof(WORD); |
| r->Data.SIG.chAlgorithm = *pos++; |
| r->Data.SIG.chLabelCount = *pos++; |
| r->Data.SIG.dwOriginalTtl = *(const DWORD *)pos; pos += sizeof(DWORD); |
| r->Data.SIG.dwExpiration = *(const DWORD *)pos; pos += sizeof(DWORD); |
| r->Data.SIG.dwTimeSigned = *(const DWORD *)pos; pos += sizeof(DWORD); |
| r->Data.SIG.wKeyTag = *(const WORD *)pos; |
| |
| size = rr->rdata + rr->rdlength - pos; |
| |
| for (i = 0; i < size; i++) |
| r->Data.SIG.Signature[i] = *pos++; |
| |
| *dlen = sizeof(DNS_SIG_DATAA) + (size - 1) * sizeof(BYTE); |
| break; |
| } |
| case ns_t_soa: |
| { |
| r->Data.SOA.pNamePrimaryServer = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.SOA.pNamePrimaryServer) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| if (dns_ns_name_skip( &pos, ns_msg_end( msg ) ) < 0) |
| return DNS_ERROR_BAD_PACKET; |
| |
| r->Data.SOA.pNameAdministrator = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.SOA.pNameAdministrator) |
| { |
| heap_free( r->Data.SOA.pNamePrimaryServer ); |
| return ERROR_NOT_ENOUGH_MEMORY; |
| } |
| |
| if (dns_ns_name_skip( &pos, ns_msg_end( msg ) ) < 0) |
| return DNS_ERROR_BAD_PACKET; |
| |
| r->Data.SOA.dwSerialNo = ntohl( *(const DWORD *)pos ); pos += sizeof(DWORD); |
| r->Data.SOA.dwRefresh = ntohl( *(const DWORD *)pos ); pos += sizeof(DWORD); |
| r->Data.SOA.dwRetry = ntohl( *(const DWORD *)pos ); pos += sizeof(DWORD); |
| r->Data.SOA.dwExpire = ntohl( *(const DWORD *)pos ); pos += sizeof(DWORD); |
| r->Data.SOA.dwDefaultTtl = ntohl( *(const DWORD *)pos ); pos += sizeof(DWORD); |
| |
| *dlen = sizeof(DNS_SOA_DATAA); |
| break; |
| } |
| case ns_t_srv: |
| { |
| r->Data.SRV.wPriority = ntohs( *(const WORD *)pos ); pos += sizeof(WORD); |
| r->Data.SRV.wWeight = ntohs( *(const WORD *)pos ); pos += sizeof(WORD); |
| r->Data.SRV.wPort = ntohs( *(const WORD *)pos ); pos += sizeof(WORD); |
| |
| r->Data.SRV.pNameTarget = dns_dname_from_msg( msg, pos ); |
| if (!r->Data.SRV.pNameTarget) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| *dlen = sizeof(DNS_SRV_DATAA); |
| break; |
| } |
| case ns_t_hinfo: |
| case ns_t_isdn: |
| case ns_t_x25: |
| case ns_t_txt: |
| { |
| i = 0; |
| while (pos[0] && pos < rr->rdata + rr->rdlength) |
| { |
| r->Data.TXT.pStringArray[i] = dns_str_from_rdata( pos ); |
| if (!r->Data.TXT.pStringArray[i]) |
| { |
| while (i > 0) heap_free( r->Data.TXT.pStringArray[--i] ); |
| return ERROR_NOT_ENOUGH_MEMORY; |
| } |
| i++; |
| pos += pos[0] + 1; |
| } |
| r->Data.TXT.dwStringCount = i; |
| *dlen = sizeof(DNS_TXT_DATAA) + (i - 1) * sizeof(PCHAR); |
| break; |
| } |
| case ns_t_atma: |
| case ns_t_loc: |
| case ns_t_nxt: |
| case ns_t_tsig: |
| case ns_t_wks: |
| case 0x00f9: /* TKEY */ |
| case 0xff01: /* WINS */ |
| case 0xff02: /* WINSR */ |
| default: |
| FIXME( "unhandled type: %s\n", dns_type_to_str( rr->type ) ); |
| return DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| } |
| |
| return ret; |
| } |
| |
| static DNS_STATUS dns_copy_record( ns_msg msg, ns_sect section, |
| unsigned short num, DNS_RECORDA **recp ) |
| { |
| DNS_STATUS ret; |
| DNS_RECORDA *record; |
| WORD dlen; |
| ns_rr rr; |
| |
| if (dns_ns_parserr( &msg, section, num, &rr ) < 0) |
| return DNS_ERROR_BAD_PACKET; |
| |
| if (!(record = heap_alloc_zero( dns_get_record_size( &rr ) ))) |
| return ERROR_NOT_ENOUGH_MEMORY; |
| |
| record->pName = dns_strdup_u( rr.name ); |
| if (!record->pName) |
| { |
| heap_free( record ); |
| return ERROR_NOT_ENOUGH_MEMORY; |
| } |
| |
| record->wType = rr.type; |
| record->Flags.S.Section = section; |
| record->Flags.S.CharSet = DnsCharSetUtf8; |
| record->dwTtl = rr.ttl; |
| |
| if ((ret = dns_copy_rdata( msg, &rr, record, &dlen ))) |
| { |
| heap_free( record->pName ); |
| heap_free( record ); |
| return ret; |
| } |
| record->wDataLength = dlen; |
| *recp = record; |
| |
| TRACE( "found %s record in %s section\n", |
| dns_type_to_str( rr.type ), dns_section_to_str( section ) ); |
| return ERROR_SUCCESS; |
| } |
| |
| #define DEFAULT_TTL 1200 |
| |
| static DNS_STATUS dns_do_query_netbios( PCSTR name, DNS_RECORDA **recp ) |
| { |
| NCB ncb; |
| UCHAR ret; |
| DNS_RRSET rrset; |
| FIND_NAME_BUFFER *buffer; |
| FIND_NAME_HEADER *header; |
| DNS_RECORDA *record = NULL; |
| unsigned int i, len; |
| DNS_STATUS status = ERROR_INVALID_NAME; |
| |
| len = strlen( name ); |
| if (len >= NCBNAMSZ) return DNS_ERROR_RCODE_NAME_ERROR; |
| |
| DNS_RRSET_INIT( rrset ); |
| |
| memset( &ncb, 0, sizeof(ncb) ); |
| ncb.ncb_command = NCBFINDNAME; |
| |
| memset( ncb.ncb_callname, ' ', sizeof(ncb.ncb_callname) ); |
| memcpy( ncb.ncb_callname, name, len ); |
| ncb.ncb_callname[NCBNAMSZ - 1] = '\0'; |
| |
| ret = Netbios( &ncb ); |
| if (ret != NRC_GOODRET) return ERROR_INVALID_NAME; |
| |
| header = (FIND_NAME_HEADER *)ncb.ncb_buffer; |
| buffer = (FIND_NAME_BUFFER *)((char *)header + sizeof(FIND_NAME_HEADER)); |
| |
| for (i = 0; i < header->node_count; i++) |
| { |
| record = heap_alloc_zero( sizeof(DNS_RECORDA) ); |
| if (!record) |
| { |
| status = ERROR_NOT_ENOUGH_MEMORY; |
| goto exit; |
| } |
| else |
| { |
| record->pName = dns_strdup_u( name ); |
| if (!record->pName) |
| { |
| status = ERROR_NOT_ENOUGH_MEMORY; |
| goto exit; |
| } |
| |
| record->wType = DNS_TYPE_A; |
| record->Flags.S.Section = DnsSectionAnswer; |
| record->Flags.S.CharSet = DnsCharSetUtf8; |
| record->dwTtl = DEFAULT_TTL; |
| |
| /* FIXME: network byte order? */ |
| record->Data.A.IpAddress = *(DWORD *)((char *)buffer[i].destination_addr + 2); |
| |
| DNS_RRSET_ADD( rrset, (DNS_RECORD *)record ); |
| } |
| } |
| status = ERROR_SUCCESS; |
| |
| exit: |
| DNS_RRSET_TERMINATE( rrset ); |
| |
| if (status != ERROR_SUCCESS) |
| DnsRecordListFree( rrset.pFirstRR, DnsFreeRecordList ); |
| else |
| *recp = (DNS_RECORDA *)rrset.pFirstRR; |
| |
| return status; |
| } |
| |
| /* res_init() must have been called before calling these three functions. |
| */ |
| static DNS_STATUS dns_set_serverlist( const IP4_ARRAY *addrs ) |
| { |
| int i; |
| |
| if (addrs->AddrCount > MAXNS) |
| { |
| WARN( "too many servers: %d only using the first: %d\n", |
| addrs->AddrCount, MAXNS ); |
| _res.nscount = MAXNS; |
| } |
| else _res.nscount = addrs->AddrCount; |
| |
| for (i = 0; i < _res.nscount; i++) |
| _res.nsaddr_list[i].sin_addr.s_addr = addrs->AddrArray[i]; |
| |
| return ERROR_SUCCESS; |
| } |
| |
| static DNS_STATUS dns_get_serverlist( PIP4_ARRAY addrs, PDWORD len ) |
| { |
| unsigned int size; |
| int i; |
| |
| size = sizeof(IP4_ARRAY) + sizeof(IP4_ADDRESS) * (_res.nscount - 1); |
| if (!addrs || *len < size) |
| { |
| *len = size; |
| return ERROR_INSUFFICIENT_BUFFER; |
| } |
| |
| addrs->AddrCount = _res.nscount; |
| |
| for (i = 0; i < _res.nscount; i++) |
| addrs->AddrArray[i] = _res.nsaddr_list[i].sin_addr.s_addr; |
| |
| return ERROR_SUCCESS; |
| } |
| |
| static DNS_STATUS dns_do_query( PCSTR name, WORD type, DWORD options, |
| PDNS_RECORDA *result ) |
| { |
| DNS_STATUS ret = DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| |
| unsigned int i, num; |
| unsigned char answer[NS_PACKETSZ]; |
| ns_sect sections[] = { ns_s_an, ns_s_ar }; |
| ns_msg msg; |
| |
| DNS_RECORDA *record = NULL; |
| DNS_RRSET rrset; |
| int len; |
| |
| DNS_RRSET_INIT( rrset ); |
| |
| len = res_query( name, ns_c_in, type, answer, sizeof(answer) ); |
| if (len < 0) |
| { |
| ret = dns_map_h_errno( h_errno ); |
| goto exit; |
| } |
| |
| if (dns_ns_initparse( answer, len, &msg ) < 0) |
| { |
| ret = DNS_ERROR_BAD_PACKET; |
| goto exit; |
| } |
| |
| #define RCODE_MASK 0x0f |
| if ((msg._flags & RCODE_MASK) != ns_r_noerror) |
| { |
| ret = dns_map_error( msg._flags & RCODE_MASK ); |
| goto exit; |
| } |
| |
| for (i = 0; i < sizeof(sections)/sizeof(sections[0]); i++) |
| { |
| for (num = 0; num < ns_msg_count( msg, sections[i] ); num++) |
| { |
| ret = dns_copy_record( msg, sections[i], num, &record ); |
| if (ret != ERROR_SUCCESS) goto exit; |
| |
| DNS_RRSET_ADD( rrset, (DNS_RECORD *)record ); |
| } |
| } |
| |
| exit: |
| DNS_RRSET_TERMINATE( rrset ); |
| |
| if (ret != ERROR_SUCCESS) |
| DnsRecordListFree( rrset.pFirstRR, DnsFreeRecordList ); |
| else |
| *result = (DNS_RECORDA *)rrset.pFirstRR; |
| |
| return ret; |
| } |
| |
| #endif /* HAVE_RESOLV */ |
| |
| /****************************************************************************** |
| * DnsQuery_A [DNSAPI.@] |
| * |
| */ |
| DNS_STATUS WINAPI DnsQuery_A( PCSTR name, WORD type, DWORD options, PVOID servers, |
| PDNS_RECORDA *result, PVOID *reserved ) |
| { |
| WCHAR *nameW; |
| DNS_RECORDW *resultW; |
| DNS_STATUS status; |
| |
| TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_a(name), dns_type_to_str( type ), |
| options, servers, result, reserved ); |
| |
| if (!name || !result) |
| return ERROR_INVALID_PARAMETER; |
| |
| nameW = dns_strdup_aw( name ); |
| if (!nameW) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| status = DnsQuery_W( nameW, type, options, servers, &resultW, reserved ); |
| |
| if (status == ERROR_SUCCESS) |
| { |
| *result = (DNS_RECORDA *)DnsRecordSetCopyEx( |
| (DNS_RECORD *)resultW, DnsCharSetUnicode, DnsCharSetAnsi ); |
| |
| if (!*result) status = ERROR_NOT_ENOUGH_MEMORY; |
| DnsRecordListFree( (DNS_RECORD *)resultW, DnsFreeRecordList ); |
| } |
| |
| heap_free( nameW ); |
| return status; |
| } |
| |
| /****************************************************************************** |
| * DnsQuery_UTF8 [DNSAPI.@] |
| * |
| */ |
| DNS_STATUS WINAPI DnsQuery_UTF8( PCSTR name, WORD type, DWORD options, PVOID servers, |
| PDNS_RECORDA *result, PVOID *reserved ) |
| { |
| DNS_STATUS ret = DNS_ERROR_RCODE_NOT_IMPLEMENTED; |
| #ifdef HAVE_RESOLV |
| |
| TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_a(name), dns_type_to_str( type ), |
| options, servers, result, reserved ); |
| |
| if (!name || !result) |
| return ERROR_INVALID_PARAMETER; |
| |
| initialise_resolver(); |
| _res.options |= dns_map_options( options ); |
| |
| if (servers && (ret = dns_set_serverlist( servers ))) |
| return ret; |
| |
| ret = dns_do_query( name, type, options, result ); |
| |
| if (ret == DNS_ERROR_RCODE_NAME_ERROR && type == DNS_TYPE_A && |
| !(options & DNS_QUERY_NO_NETBT)) |
| { |
| TRACE( "dns lookup failed, trying netbios query\n" ); |
| ret = dns_do_query_netbios( name, result ); |
| } |
| |
| #endif |
| return ret; |
| } |
| |
| /****************************************************************************** |
| * DnsQuery_W [DNSAPI.@] |
| * |
| */ |
| DNS_STATUS WINAPI DnsQuery_W( PCWSTR name, WORD type, DWORD options, PVOID servers, |
| PDNS_RECORDW *result, PVOID *reserved ) |
| { |
| char *nameU; |
| DNS_RECORDA *resultA; |
| DNS_STATUS status; |
| |
| TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_w(name), dns_type_to_str( type ), |
| options, servers, result, reserved ); |
| |
| if (!name || !result) |
| return ERROR_INVALID_PARAMETER; |
| |
| nameU = dns_strdup_wu( name ); |
| if (!nameU) return ERROR_NOT_ENOUGH_MEMORY; |
| |
| status = DnsQuery_UTF8( nameU, type, options, servers, &resultA, reserved ); |
| |
| if (status == ERROR_SUCCESS) |
| { |
| *result = (DNS_RECORDW *)DnsRecordSetCopyEx( |
| (DNS_RECORD *)resultA, DnsCharSetUtf8, DnsCharSetUnicode ); |
| |
| if (!*result) status = ERROR_NOT_ENOUGH_MEMORY; |
| DnsRecordListFree( (DNS_RECORD *)resultA, DnsFreeRecordList ); |
| } |
| |
| heap_free( nameU ); |
| return status; |
| } |
| |
| static DNS_STATUS dns_get_hostname_a( COMPUTER_NAME_FORMAT format, |
| PSTR buffer, PDWORD len ) |
| { |
| char name[256]; |
| DWORD size = sizeof(name)/sizeof(name[0]); |
| |
| if (!GetComputerNameExA( format, name, &size )) |
| return DNS_ERROR_NAME_DOES_NOT_EXIST; |
| |
| if (!buffer || (size = lstrlenA( name ) + 1) > *len) |
| { |
| *len = size; |
| return ERROR_INSUFFICIENT_BUFFER; |
| } |
| |
| lstrcpyA( buffer, name ); |
| return ERROR_SUCCESS; |
| } |
| |
| static DNS_STATUS dns_get_hostname_w( COMPUTER_NAME_FORMAT format, |
| PWSTR buffer, PDWORD len ) |
| { |
| WCHAR name[256]; |
| DWORD size = sizeof(name)/sizeof(name[0]); |
| |
| if (!GetComputerNameExW( format, name, &size )) |
| return DNS_ERROR_NAME_DOES_NOT_EXIST; |
| |
| if (!buffer || (size = lstrlenW( name ) + 1) > *len) |
| { |
| *len = size; |
| return ERROR_INSUFFICIENT_BUFFER; |
| } |
| |
| lstrcpyW( buffer, name ); |
| return ERROR_SUCCESS; |
| } |
| |
| /****************************************************************************** |
| * DnsQueryConfig [DNSAPI.@] |
| * |
| */ |
| DNS_STATUS WINAPI DnsQueryConfig( DNS_CONFIG_TYPE config, DWORD flag, PCWSTR adapter, |
| PVOID reserved, PVOID buffer, PDWORD len ) |
| { |
| DNS_STATUS ret = ERROR_INVALID_PARAMETER; |
| |
| TRACE( "(%d,0x%08x,%s,%p,%p,%p)\n", config, flag, debugstr_w(adapter), |
| reserved, buffer, len ); |
| |
| if (!len) return ERROR_INVALID_PARAMETER; |
| |
| switch (config) |
| { |
| case DnsConfigDnsServerList: |
| { |
| #ifdef HAVE_RESOLV |
| initialise_resolver(); |
| ret = dns_get_serverlist( buffer, len ); |
| break; |
| #else |
| WARN( "compiled without resolver support\n" ); |
| break; |
| #endif |
| } |
| case DnsConfigHostName_A: |
| case DnsConfigHostName_UTF8: |
| return dns_get_hostname_a( ComputerNameDnsHostname, buffer, len ); |
| |
| case DnsConfigFullHostName_A: |
| case DnsConfigFullHostName_UTF8: |
| return dns_get_hostname_a( ComputerNameDnsFullyQualified, buffer, len ); |
| |
| case DnsConfigPrimaryDomainName_A: |
| case DnsConfigPrimaryDomainName_UTF8: |
| return dns_get_hostname_a( ComputerNameDnsDomain, buffer, len ); |
| |
| case DnsConfigHostName_W: |
| return dns_get_hostname_w( ComputerNameDnsHostname, buffer, len ); |
| |
| case DnsConfigFullHostName_W: |
| return dns_get_hostname_w( ComputerNameDnsFullyQualified, buffer, len ); |
| |
| case DnsConfigPrimaryDomainName_W: |
| return dns_get_hostname_w( ComputerNameDnsDomain, buffer, len ); |
| |
| case DnsConfigAdapterDomainName_A: |
| case DnsConfigAdapterDomainName_W: |
| case DnsConfigAdapterDomainName_UTF8: |
| case DnsConfigSearchList: |
| case DnsConfigAdapterInfo: |
| case DnsConfigPrimaryHostNameRegistrationEnabled: |
| case DnsConfigAdapterHostNameRegistrationEnabled: |
| case DnsConfigAddressRegistrationMaxCount: |
| FIXME( "unimplemented config type %d\n", config ); |
| break; |
| |
| default: |
| WARN( "unknown config type: %d\n", config ); |
| break; |
| } |
| return ret; |
| } |
