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( 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( dn == NULL ) {
  58                 return NULL;
  59         }
  60
  61         if ( ldap_is_dns_dn( dn ) ) {
  62                 return( LDAP_STRDUP( dn ) );
  63         }
  64
  65         ufn = LDAP_STRDUP( ++p );
  66
  67 #define INQUOTE         1
  68 #define OUTQUOTE        2
  69         state = OUTQUOTE;
  70         for ( p = ufn, r = ufn; *p; p++ ) {
  71                 switch ( *p ) {
  72                 case '\\':
  73                         if ( *++p == '\0' )
  74                                 p--;
  75                         else {
  76                                 *r++ = '\\';
  77                                 *r++ = *p;
  78                         }
  79                         break;
  80                 case '"':
  81                         if ( state == INQUOTE )
  82                                 state = OUTQUOTE;
  83                         else
  84                                 state = INQUOTE;
  85                         *r++ = *p;
  86                         break;
  87                 case ';':
  88                 case ',':
  89                         if ( state == OUTQUOTE )
  90                                 *r++ = ',';
  91                         else
  92                                 *r++ = *p;
  93                         break;
  94                 case '=':
  95                         if ( state == INQUOTE )
  96                                 *r++ = *p;
  97                         else {
  98                                 char    *rsave = r;
  99
 100                                 *r-- = '\0';
 101                                 while ( !isspace( (unsigned char) *r )
 102                                         && *r != ';' && *r != ',' && r > ufn )
 103                                         r--;
 104                                 r++;
 105
 106                                 if ( strcasecmp( r, "c" )
 107                                     && strcasecmp( r, "o" )
 108                                     && strcasecmp( r, "ou" )
 109                                     && strcasecmp( r, "st" )
 110                                     && strcasecmp( r, "l" )
 111                                     && strcasecmp( r, "cn" ) ) {
 112                                         r = rsave;
 113                                         *r++ = '=';
 114                                 }
 115                         }
 116                         break;
 117                 default:
 118                         *r++ = *p;
 119                         break;
 120                 }
 121         }
 122         *r = '\0';
 123
 124         return( ufn );
 125 }
 126
 127 char **
 128 ldap_explode_dns( LDAP_CONST char *dn_in )
 129 {
 130         char    *s;
 131         char    **rdns;
 132         char    *tok_r;
 133         char    *dn;
 134
 135         int ncomps;
 136         int maxcomps = 8;
 137
 138         if ( (dn = LDAP_STRDUP( dn_in )) == NULL ) {
 139                 return( NULL );
 140         }
 141
 142         if ( (rdns = (char **) LDAP_MALLOC( maxcomps * sizeof(char *) )) == NULL ) {
 143                 LDAP_FREE( dn );
 144                 return( NULL );
 145         }
 146
 147         ncomps = 0;
 148         for ( s = ldap_pvt_strtok( dn, "@.", &tok_r ); s != NULL;
 149               s = ldap_pvt_strtok( NULL, "@.", &tok_r ) )
 150         {
 151                 if ( ncomps == maxcomps ) {
 152                         maxcomps *= 2;
 153                         if ( (rdns = (char **) LDAP_REALLOC( rdns, maxcomps *
 154                             sizeof(char *) )) == NULL )
 155                         {
 156                                 LDAP_FREE( dn );
 157                                 return NULL;
 158                         }
 159                 }
 160                 rdns[ncomps++] = LDAP_STRDUP( s );
 161         }
 162         LDAP_FREE(dn);
 163
 164         rdns[ncomps] = NULL;
 165
 166         /* trim rdns */
 167         rdns = (char **) LDAP_REALLOC( rdns, (ncomps+1) * sizeof(char*) );
 168         return( rdns );
 169 }
 170
 171 char **
 172 ldap_explode_dn( LDAP_CONST char *dn, int notypes )
 173 {
 174         Debug( LDAP_DEBUG_TRACE, "ldap_explode_dn\n", 0, 0, 0 );
 175
 176         if ( ldap_is_dns_dn( dn ) ) {
 177                 return( ldap_explode_dns( dn ) );
 178         }
 179         return explode_name( dn, notypes, 1 );
 180 }
 181
 182 char **
 183 ldap_explode_rdn( LDAP_CONST char *rdn, int notypes )
 184 {
 185         Debug( LDAP_DEBUG_TRACE, "ldap_explode_rdn\n", 0, 0, 0 );
 186         return explode_name( rdn, notypes, 0 );
 187 }
 188
 189 static char **
 190 explode_name( const char *name, int notypes, int is_dn )
 191 {
 192         const char *p, *q;
 193         char **parts = NULL;
 194         int     state, count = 0, endquote, len;
 195
 196         p = name-1;
 197         state = OUTQUOTE;
 198
 199         do {
 200
 201                 ++p;
 202                 switch ( *p ) {
 203                 case '\\':
 204                         if ( *++p == '\0' )
 205                                 p--;
 206                         break;
 207                 case '"':
 208                         if ( state == INQUOTE )
 209                                 state = OUTQUOTE;
 210                         else
 211                                 state = INQUOTE;
 212                         break;
 213                 case '+':
 214                         if (!is_dn)
 215                                 goto end_part;
 216                         break;
 217                 case ';':
 218                 case ',':
 219                         if (!is_dn)
 220                                 break;
 221                         goto end_part;
 222                 case '\0':
 223                 end_part:
 224                         if ( state == OUTQUOTE ) {
 225                                 ++count;
 226                                 if ( parts == NULL ) {
 227                                         if (( parts = (char **)LDAP_MALLOC( 8
 228                                                  * sizeof( char *))) == NULL )
 229                                                 return( NULL );
 230                                 } else if ( count >= 8 ) {
 231                                         if (( parts = (char **)LDAP_REALLOC( parts,
 232                                                 (count+1) * sizeof( char *)))
 233                                                 == NULL )
 234                                                 return( NULL );
 235                                 }
 236                                 parts[ count ] = NULL;
 237                                 endquote = 0;
 238                                 if ( notypes ) {
 239                                         for ( q = name;
 240                                             q < p && *q != '='; ++q ) {
 241                                                 ;
 242                                         }
 243                                         if ( q < p ) {
 244                                                 name = ++q;
 245                                         }
 246                                         if ( *name == '"' ) {
 247                                                 ++name;
 248                                         }
 249
 250                                         if ( *(p-1) == '"' ) {
 251                                                 endquote = 1;
 252                                                 --p;
 253                                         }
 254                                 }
 255
 256                                 len = p - name;
 257                                 if (( parts[ count-1 ] = (char *)LDAP_CALLOC( 1,
 258                                     len + 1 )) != NULL ) {
 259                                         SAFEMEMCPY( parts[ count-1 ], name,
 260                                             len );
 261                                         parts[ count-1 ][ len ] = '\0';
 262                                 }
 263
 264                                 /*
 265                                  *  Don't forget to increment 'p' back to where
 266                                  *  it should be.  If we don't, then we will
 267                                  *  never get past an "end quote."
 268                                  */
 269                                 if ( endquote == 1 )
 270                                         p++;
 271
 272                                 name = *p ? p + 1 : p;
 273                                 while ( isascii( *name ) && isspace( *name ) )
 274                                         ++name;
 275                         }
 276                         break;
 277                 }
 278         } while ( *p );
 279
 280         return( parts );
 281 }
 282
 283
 284 int
 285 ldap_is_dns_dn( LDAP_CONST char *dn )
 286 {
 287         return( dn[ 0 ] != '\0'
 288                 && strchr( dn, '=' ) == NULL
 289                 && strchr( dn, ',' ) == NULL
 290                 && strchr( dn, ';' ) == NULL );
 291 }
 292