diff options
Diffstat (limited to 'usr/src/lib/libldap4/common/getdxbyname.c')
| -rw-r--r-- | usr/src/lib/libldap4/common/getdxbyname.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/usr/src/lib/libldap4/common/getdxbyname.c b/usr/src/lib/libldap4/common/getdxbyname.c deleted file mode 100644 index e6316e0436..0000000000 --- a/usr/src/lib/libldap4/common/getdxbyname.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * Copyright 2004 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#ifdef LDAP_DNS -/* - * Copyright (c) 1995 Regents of the University of Michigan. - * All rights reserved. - * - * getdxbyname - retrieve DX records from the DNS (from TXT records for now) - */ -#include <stdio.h> -#include <string.h> -#include <ctype.h> - -#ifdef MACOS -#include <stdlib.h> -#include "macos.h" -#endif /* MACOS */ - -#if !defined(MACOS) && !defined(DOS) && !defined( _WIN32 ) -#include <sys/types.h> -#include <netinet/in.h> -#include <arpa/nameser.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netdb.h> -#include <resolv.h> -#endif -#include "lber.h" -#include "ldap.h" -#include "ldap-private.h" -#include "ldap-int.h" - -#if defined( DOS ) || defined( _WIN32 ) -#include "msdos.h" -#endif /* DOS */ - - -#ifdef NEEDPROTOS -static char ** decode_answer( unsigned char *answer, int len ); -#else /* NEEDPROTOS */ -static char **decode_answer(); -#endif /* NEEDPROTOS */ - -extern int h_errno; -extern char *h_errlist[]; - - -#define MAX_TO_SORT 32 - - -/* - * getdxbyname - lookup DNS DX records for domain and return an ordered - * array. - */ -char ** -getdxbyname( char *domain ) -{ - unsigned char buf[ PACKETSZ ]; - char **dxs; - int rc; - - Debug( LDAP_DEBUG_TRACE, "getdxbyname( %s )\n", domain, 0, 0 ); - - memset( buf, 0, sizeof( buf )); - - if (( rc = res_search( domain, C_IN, T_TXT, buf, sizeof( buf ))) < 0 - || ( dxs = decode_answer( buf, rc )) == NULL ) { - /* - * punt: return list conisting of the original domain name only - */ - if (( dxs = (char **)malloc( 2 * sizeof( char * ))) == NULL || - ( dxs[ 0 ] = strdup( domain )) == NULL ) { - if ( dxs != NULL ) { - free( dxs ); - } - dxs = NULL; - } else { - dxs[ 1 ] = NULL; - } - } - - return( dxs ); -} - - -static char ** -decode_answer( unsigned char *answer, int len ) -{ - HEADER *hp; - char buf[ 256 ], **dxs; - unsigned char *eom, *p; - int ancount, err, rc, type, class, dx_count, rr_len; - int dx_pref[ MAX_TO_SORT ]; - - int _getshort( unsigned char * ); -#ifdef LDAP_DEBUG - if ( ldap_debug & LDAP_DEBUG_PACKETS ) { -/* __p_query( answer ); */ - } -#endif /* LDAP_DEBUG */ - - dxs = NULL; - hp = (HEADER *)answer; - eom = answer + len; - - if ( ntohs( hp->qdcount ) != 1 ) { - h_errno = NO_RECOVERY; - return( NULL ); - } - - ancount = ntohs( hp->ancount ); - if ( ancount < 1 ) { - h_errno = NO_DATA; - return( NULL ); - } - - /* - * skip over the query - */ - p = answer + HFIXEDSZ; - if (( rc = dn_expand( answer, eom, p, buf, sizeof( buf ))) < 0 ) { - h_errno = NO_RECOVERY; - return( NULL ); - } - p += ( rc + QFIXEDSZ ); - - /* - * pull out the answers we are interested in - */ - err = dx_count = 0; - while ( ancount > 0 && err == 0 && p < eom ) { - if (( rc = dn_expand( answer, eom, p, buf, sizeof( buf ))) < 0 ) { - err = NO_RECOVERY; - continue; - } - p += rc; /* skip over name */ - type = _getshort( p ); - p += INT16SZ; - class = _getshort( p ); - p += INT16SZ; - p += INT32SZ; /* skip over TTL */ - rr_len = _getshort( p ); - p += INT16SZ; - if ( class == C_IN && type == T_TXT ) { - int i, n, pref, txt_len; - char *q, *r; - - q = (char *)p; - while ( q < (char *)p + rr_len && err == 0 ) { - if ( *q >= 3 && strncasecmp( q + 1, "dx:", 3 ) == 0 ) { - txt_len = *q - 3; - r = q + 4; - while ( isspace( *r )) { - ++r; - --txt_len; - } - pref = 0; - while ( isdigit( *r )) { - pref *= 10; - pref += ( *r - '0' ); - ++r; - --txt_len; - } - if ( dx_count < MAX_TO_SORT - 1 ) { - dx_pref[ dx_count ] = pref; - } - while ( isspace( *r )) { - ++r; - --txt_len; - } - if ( dx_count == 0 ) { - dxs = (char **)malloc( 2 * sizeof( char * )); - } else { - dxs = (char **)realloc( dxs, - ( dx_count + 2 ) * sizeof( char * )); - } - if ( dxs == NULL || ( dxs[ dx_count ] = - (char *)calloc( 1, txt_len + 1 )) == NULL ) { - err = NO_RECOVERY; - continue; - } - memcpy( dxs[ dx_count ], r, txt_len ); - dxs[ ++dx_count ] = NULL; - } - q += ( *q + 1 ); /* move past last TXT record */ - } - } - p += rr_len; - } - - if ( err == 0 ) { - if ( dx_count == 0 ) { - err = NO_DATA; - } else { - /* - * sort records based on associated preference value - */ - int i, j, sort_count, tmp_pref; - char *tmp_dx; - - sort_count = ( dx_count < MAX_TO_SORT ) ? dx_count : MAX_TO_SORT; - for ( i = 0; i < sort_count; ++i ) { - for ( j = i + 1; j < sort_count; ++j ) { - if ( dx_pref[ i ] > dx_pref[ j ] ) { - tmp_pref = dx_pref[ i ]; - dx_pref[ i ] = dx_pref[ j ]; - dx_pref[ j ] = tmp_pref; - tmp_dx = dxs[ i ]; - dxs[ i ] = dxs[ j ]; - dxs[ j ] = tmp_dx; - } - } - } - } - } - - h_errno = err; - return( dxs ); -} - -#endif /* LDAP_DNS */ |