git.sur5r.net Git - openldap/blob - libraries/libldap/getdn.c

   1 /*
   2  * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
   3  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   4  */
   5 /*  Portions
   6  *  Copyright (c) 1994 Regents of the University of Michigan.
   7  *  All rights reserved.
   8  *
   9  *  getdn.c
  10  */
  11
  12 #include "portable.h"
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16
  17 #include <ac/ctype.h>
  18 #include <ac/socket.h>
  19 #include <ac/string.h>
  20 #include <ac/time.h>
  21
  22 #include "ldap-int.h"
  23
  24 static char **explode_name( char *name, int notypes, int is_dn );
  25
  26 char *
  27 ldap_get_dn( LDAP *ld, LDAPMessage *entry )
  28 {
  29         char            *dn;
  30         BerElement      tmp;
  31
  32         Debug( LDAP_DEBUG_TRACE, "ldap_get_dn\n", 0, 0, 0 );
  33
  34         if ( entry == NULL ) {
  35                 ld->ld_errno = LDAP_PARAM_ERROR;
  36                 return( NULL );
  37         }
  38
  39         tmp = *entry->lm_ber;   /* struct copy */
  40         if ( ber_scanf( &tmp, "{a", &dn ) == LBER_ERROR ) {
  41                 ld->ld_errno = LDAP_DECODING_ERROR;
  42                 return( NULL );
  43         }
  44
  45         return( dn );
  46 }
  47
  48 char *
  49 ldap_dn2ufn( char *dn )
  50 {
  51         char    *p, *ufn, *r;
  52         int     state;
  53
  54         Debug( LDAP_DEBUG_TRACE, "ldap_dn2ufn\n", 0, 0, 0 );
  55
  56         if ( ldap_is_dns_dn( dn ) || ( p = strchr( dn, '=' )) == NULL )
  57                 return( strdup( dn ) );
  58
  59         ufn = strdup( ++p );
  60
  61 #define INQUOTE         1
  62 #define OUTQUOTE        2
  63         state = OUTQUOTE;
  64         for ( p = ufn, r = ufn; *p; p++ ) {
  65                 switch ( *p ) {
  66                 case '\\':
  67                         if ( *++p == '\0' )
  68                                 p--;
  69                         else {
  70                                 *r++ = '\\';
  71                                 *r++ = *p;
  72                         }
  73                         break;
  74                 case '"':
  75                         if ( state == INQUOTE )
  76                                 state = OUTQUOTE;
  77                         else
  78                                 state = INQUOTE;
  79                         *r++ = *p;
  80                         break;
  81                 case ';':
  82                 case ',':
  83                         if ( state == OUTQUOTE )
  84                                 *r++ = ',';
  85                         else
  86                                 *r++ = *p;
  87                         break;
  88                 case '=':
  89                         if ( state == INQUOTE )
  90                                 *r++ = *p;
  91                         else {
  92                                 char    *rsave = r;
  93
  94                                 *r-- = '\0';
  95                                 while ( !isspace( (unsigned char) *r )
  96                                         && *r != ';' && *r != ',' && r > ufn )
  97                                         r--;
  98                                 r++;
  99
 100                                 if ( strcasecmp( r, "c" )
 101                                     && strcasecmp( r, "o" )
 102                                     && strcasecmp( r, "ou" )
 103                                     && strcasecmp( r, "st" )
 104                                     && strcasecmp( r, "l" )
 105                                     && strcasecmp( r, "cn" ) ) {
 106                                         r = rsave;
 107                                         *r++ = '=';
 108                                 }
 109                         }
 110                         break;
 111                 default:
 112                         *r++ = *p;
 113                         break;
 114                 }
 115         }
 116         *r = '\0';
 117
 118         return( ufn );
 119 }
 120
 121 char **
 122 ldap_explode_dns( char *dn )
 123 {
 124         int     ncomps, maxcomps;
 125         char    *s;
 126         char    **rdns;
 127         char    *tok_r;
 128
 129         if ( (rdns = (char **) malloc( 8 * sizeof(char *) )) == NULL ) {
 130                 return( NULL );
 131         }
 132
 133         maxcomps = 8;
 134         ncomps = 0;
 135         for ( s = ldap_pvt_strtok( dn, "@.", &tok_r ); s != NULL;
 136               s = ldap_pvt_strtok( NULL, "@.", &tok_r ) ) {
 137                 if ( ncomps == maxcomps ) {
 138                         maxcomps *= 2;
 139                         if ( (rdns = (char **) realloc( rdns, maxcomps *
 140                             sizeof(char *) )) == NULL ) {
 141                                 return( NULL );
 142                         }
 143                 }
 144                 rdns[ncomps++] = strdup( s );
 145         }
 146         rdns[ncomps] = NULL;
 147
 148         return( rdns );
 149 }
 150
 151 char **
 152 ldap_explode_dn( char *dn, int notypes )
 153 {
 154         Debug( LDAP_DEBUG_TRACE, "ldap_explode_dn\n", 0, 0, 0 );
 155
 156         if ( ldap_is_dns_dn( dn ) ) {
 157                 return( ldap_explode_dns( dn ) );
 158         }
 159         return explode_name( dn, notypes, 1 );
 160 }
 161
 162 char **
 163 ldap_explode_rdn( char *rdn, int notypes )
 164 {
 165         Debug( LDAP_DEBUG_TRACE, "ldap_explode_rdn\n", 0, 0, 0 );
 166         return explode_name( rdn, notypes, 0 );
 167 }
 168
 169 static char **
 170 explode_name( char *name, int notypes, int is_dn )
 171 {
 172         char    *p, *q, **parts = NULL;
 173         int     state, count = 0, endquote, len;
 174
 175         p = name-1;
 176         state = OUTQUOTE;
 177
 178         do {
 179
 180                 ++p;
 181                 switch ( *p ) {
 182                 case '\\':
 183                         if ( *++p == '\0' )
 184                                 p--;
 185                         break;
 186                 case '"':
 187                         if ( state == INQUOTE )
 188                                 state = OUTQUOTE;
 189                         else
 190                                 state = INQUOTE;
 191                         break;
 192                 case '+':
 193                         if (!is_dn)
 194                                 goto end_part;
 195                         break;
 196                 case ';':
 197                 case ',':
 198                         if (!is_dn)
 199                                 break;
 200                         goto end_part;
 201                 case '\0':
 202                 end_part:
 203                         if ( state == OUTQUOTE ) {
 204                                 ++count;
 205                                 if ( parts == NULL ) {
 206                                         if (( parts = (char **)malloc( 8
 207                                                  * sizeof( char *))) == NULL )
 208                                                 return( NULL );
 209                                 } else if ( count >= 8 ) {
 210                                         if (( parts = (char **)realloc( parts,
 211                                                 (count+1) * sizeof( char *)))
 212                                                 == NULL )
 213                                                 return( NULL );
 214                                 }
 215                                 parts[ count ] = NULL;
 216                                 endquote = 0;
 217                                 if ( notypes ) {
 218                                         for ( q = name;
 219                                             q < p && *q != '='; ++q ) {
 220                                                 ;
 221                                         }
 222                                         if ( q < p ) {
 223                                                 name = ++q;
 224                                         }
 225                                         if ( *name == '"' ) {
 226                                                 ++name;
 227                                         }
 228
 229                                         if ( *(p-1) == '"' ) {
 230                                                 endquote = 1;
 231                                                 --p;
 232                                         }
 233                                 }
 234
 235                                 len = p - name;
 236                                 if (( parts[ count-1 ] = (char *)calloc( 1,
 237                                     len + 1 )) != NULL ) {
 238                                         SAFEMEMCPY( parts[ count-1 ], name,
 239                                             len );
 240                                         parts[ count-1 ][ len ] = '\0';
 241                                 }
 242
 243                                 /*
 244                                  *  Don't forget to increment 'p' back to where
 245                                  *  it should be.  If we don't, then we will
 246                                  *  never get past an "end quote."
 247                                  */
 248                                 if ( endquote == 1 )
 249                                         p++;
 250
 251                                 name = *p ? p + 1 : p;
 252                                 while ( isascii( *name ) && isspace( *name ) )
 253                                         ++name;
 254                         }
 255                         break;
 256                 }
 257         } while ( *p );
 258
 259         return( parts );
 260 }
 261
 262
 263 int
 264 ldap_is_dns_dn( char *dn )
 265 {
 266         return( dn[ 0 ] != '\0' && strchr( dn, '=' ) == NULL &&
 267             strchr( dn, ',' ) == NULL );
 268 }
 269