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
  16 #include <ac/stdlib.h>
  17
  18 #include <ac/ctype.h>
  19 #include <ac/socket.h>
  20 #include <ac/string.h>
  21 #include <ac/time.h>
  22
  23 #include "ldap-int.h"
  24
  25 static char **explode_name( LDAP_CONST char *name, int notypes, int is_dn );
  26
  27 char *
  28 ldap_get_dn( LDAP *ld, LDAPMessage *entry )
  29 {
  30         char            *dn;
  31         BerElement      tmp;
  32
  33         Debug( LDAP_DEBUG_TRACE, "ldap_get_dn\n", 0, 0, 0 );
  34
  35         if ( entry == NULL ) {
  36                 ld->ld_errno = LDAP_PARAM_ERROR;
  37                 return( NULL );
  38         }
  39
  40         tmp = *entry->lm_ber;   /* struct copy */
  41         if ( ber_scanf( &tmp, "{a" /*}*/, &dn ) == LBER_ERROR ) {
  42                 ld->ld_errno = LDAP_DECODING_ERROR;
  43                 return( NULL );
  44         }
  45
  46         return( dn );
  47 }
  48
  49 char *
  50 ldap_dn2ufn( LDAP_CONST char *dn )
  51 {
  52         char    *p, *ufn, *r;
  53         int     state;
  54
  55         Debug( LDAP_DEBUG_TRACE, "ldap_dn2ufn\n", 0, 0, 0 );
  56
  57         if ( ldap_is_dns_dn( dn ) || ( p = strchr( dn, '=' )) == NULL )
  58                 return( LDAP_STRDUP( dn ) );
  59
  60         ufn = LDAP_STRDUP( ++p );
  61
  62 #define INQUOTE         1
  63 #define OUTQUOTE        2
  64         state = OUTQUOTE;
  65         for ( p = ufn, r = ufn; *p; p++ ) {
  66                 switch ( *p ) {
  67                 case '\\':
  68                         if ( *++p == '\0' )
  69                                 p--;
  70                         else {
  71                                 *r++ = '\\';
  72                                 *r++ = *p;
  73                         }
  74                         break;
  75                 case '"':
  76                         if ( state == INQUOTE )
  77                                 state = OUTQUOTE;
  78                         else
  79                                 state = INQUOTE;
  80                         *r++ = *p;
  81                         break;
  82                 case ';':
  83                 case ',':
  84                         if ( state == OUTQUOTE )
  85                                 *r++ = ',';
  86                         else
  87                                 *r++ = *p;
  88                         break;
  89                 case '=':
  90                         if ( state == INQUOTE )
  91                                 *r++ = *p;
  92                         else {
  93                                 char    *rsave = r;
  94
  95                                 *r-- = '\0';
  96                                 while ( !isspace( (unsigned char) *r )
  97                                         && *r != ';' && *r != ',' && r > ufn )
  98                                         r--;
  99                                 r++;
 100
 101                                 if ( strcasecmp( r, "c" )
 102                                     && strcasecmp( r, "o" )
 103                                     && strcasecmp( r, "ou" )
 104                                     && strcasecmp( r, "st" )
 105                                     && strcasecmp( r, "l" )
 106                                     && strcasecmp( r, "cn" ) ) {
 107                                         r = rsave;
 108                                         *r++ = '=';
 109                                 }
 110                         }
 111                         break;
 112                 default:
 113                         *r++ = *p;
 114                         break;
 115                 }
 116         }
 117         *r = '\0';
 118
 119         return( ufn );
 120 }
 121
 122 char **
 123 ldap_explode_dns( LDAP_CONST char *dn_in )
 124 {
 125         char    *s;
 126         char    **rdns;
 127         char    *tok_r;
 128         char    *dn;
 129
 130         int ncomps;
 131         int maxcomps = 8;
 132
 133         if ( (dn = LDAP_STRDUP( dn_in )) == NULL ) {
 134                 return( NULL );
 135         }
 136
 137         if ( (rdns = (char **) LDAP_MALLOC( maxcomps * sizeof(char *) )) == NULL ) {
 138                 LDAP_FREE( dn );
 139                 return( NULL );
 140         }
 141
 142         ncomps = 0;
 143         for ( s = ldap_pvt_strtok( dn, "@.", &tok_r ); s != NULL;
 144               s = ldap_pvt_strtok( NULL, "@.", &tok_r ) )
 145         {
 146                 if ( ncomps == maxcomps ) {
 147                         maxcomps *= 2;
 148                         if ( (rdns = (char **) LDAP_REALLOC( rdns, maxcomps *
 149                             sizeof(char *) )) == NULL )
 150                         {
 151                                 LDAP_FREE( dn );
 152                                 return NULL;
 153                         }
 154                 }
 155                 rdns[ncomps++] = LDAP_STRDUP( s );
 156         }
 157         LDAP_FREE(dn);
 158
 159         rdns[ncomps] = NULL;
 160
 161         /* trim rdns */
 162         rdns = (char **) LDAP_REALLOC( rdns, (ncomps+1) * sizeof(char*) );
 163         return( rdns );
 164 }
 165
 166 char **
 167 ldap_explode_dn( LDAP_CONST char *dn, int notypes )
 168 {
 169         Debug( LDAP_DEBUG_TRACE, "ldap_explode_dn\n", 0, 0, 0 );
 170
 171         if ( ldap_is_dns_dn( dn ) ) {
 172                 return( ldap_explode_dns( dn ) );
 173         }
 174         return explode_name( dn, notypes, 1 );
 175 }
 176
 177 char **
 178 ldap_explode_rdn( LDAP_CONST char *rdn, int notypes )
 179 {
 180         Debug( LDAP_DEBUG_TRACE, "ldap_explode_rdn\n", 0, 0, 0 );
 181         return explode_name( rdn, notypes, 0 );
 182 }
 183
 184 static char **
 185 explode_name( LDAP_CONST char *name, int notypes, int is_dn )
 186 {
 187         const char *p, *q;
 188         char **parts = NULL;
 189         int     state, count = 0, endquote, len;
 190
 191         p = name-1;
 192         state = OUTQUOTE;
 193
 194         do {
 195
 196                 ++p;
 197                 switch ( *p ) {
 198                 case '\\':
 199                         if ( *++p == '\0' )
 200                                 p--;
 201                         break;
 202                 case '"':
 203                         if ( state == INQUOTE )
 204                                 state = OUTQUOTE;
 205                         else
 206                                 state = INQUOTE;
 207                         break;
 208                 case '+':
 209                         if (!is_dn)
 210                                 goto end_part;
 211                         break;
 212                 case ';':
 213                 case ',':
 214                         if (!is_dn)
 215                                 break;
 216                         goto end_part;
 217                 case '\0':
 218                 end_part:
 219                         if ( state == OUTQUOTE ) {
 220                                 ++count;
 221                                 if ( parts == NULL ) {
 222                                         if (( parts = (char **)LDAP_MALLOC( 8
 223                                                  * sizeof( char *))) == NULL )
 224                                                 return( NULL );
 225                                 } else if ( count >= 8 ) {
 226                                         if (( parts = (char **)LDAP_REALLOC( parts,
 227                                                 (count+1) * sizeof( char *)))
 228                                                 == NULL )
 229                                                 return( NULL );
 230                                 }
 231                                 parts[ count ] = NULL;
 232                                 endquote = 0;
 233                                 if ( notypes ) {
 234                                         for ( q = name;
 235                                             q < p && *q != '='; ++q ) {
 236                                                 ;
 237                                         }
 238                                         if ( q < p ) {
 239                                                 name = ++q;
 240                                         }
 241                                         if ( *name == '"' ) {
 242                                                 ++name;
 243                                         }
 244
 245                                         if ( *(p-1) == '"' ) {
 246                                                 endquote = 1;
 247                                                 --p;
 248                                         }
 249                                 }
 250
 251                                 len = p - name;
 252                                 if (( parts[ count-1 ] = (char *)LDAP_CALLOC( 1,
 253                                     len + 1 )) != NULL ) {
 254                                         SAFEMEMCPY( parts[ count-1 ], name,
 255                                             len );
 256                                         parts[ count-1 ][ len ] = '\0';
 257                                 }
 258
 259                                 /*
 260                                  *  Don't forget to increment 'p' back to where
 261                                  *  it should be.  If we don't, then we will
 262                                  *  never get past an "end quote."
 263                                  */
 264                                 if ( endquote == 1 )
 265                                         p++;
 266
 267                                 name = *p ? p + 1 : p;
 268                                 while ( isascii( *name ) && isspace( *name ) )
 269                                         ++name;
 270                         }
 271                         break;
 272                 }
 273         } while ( *p );
 274
 275         return( parts );
 276 }
 277
 278
 279 int
 280 ldap_is_dns_dn( LDAP_CONST char *dn )
 281 {
 282         return( dn[ 0 ] != '\0' && strchr( dn, '=' ) == NULL &&
 283             strchr( dn, ',' ) == NULL );
 284 }
 285