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

   1 /*
   2  *  Copyright (c) 1994 Regents of the University of Michigan.
   3  *  All rights reserved.
   4  *
   5  *  getdn.c
   6  */
   7
   8 #include "portable.h"
   9
  10 #ifndef lint
  11 static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
  12 #endif
  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( ldap_strdup( dn ) );
  58
  59         ufn = ldap_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( *r ) && *r != ';'
  96                                     && *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
 128         if ( (rdns = (char **) malloc( 8 * sizeof(char *) )) == NULL ) {
 129                 return( NULL );
 130         }
 131
 132         maxcomps = 8;
 133         ncomps = 0;
 134         for ( s = strtok( dn, "@." ); s != NULL; s = strtok( NULL, "@." ) ) {
 135                 if ( ncomps == maxcomps ) {
 136                         maxcomps *= 2;
 137                         if ( (rdns = (char **) realloc( rdns, maxcomps *
 138                             sizeof(char *) )) == NULL ) {
 139                                 return( NULL );
 140                         }
 141                 }
 142                 rdns[ncomps++] = ldap_strdup( s );
 143         }
 144         rdns[ncomps] = NULL;
 145
 146         return( rdns );
 147 }
 148
 149 char **
 150 ldap_explode_dn( char *dn, int notypes )
 151 {
 152         Debug( LDAP_DEBUG_TRACE, "ldap_explode_dn\n", 0, 0, 0 );
 153
 154         if ( ldap_is_dns_dn( dn ) ) {
 155                 return( ldap_explode_dns( dn ) );
 156         }
 157         return explode_name( dn, notypes, 1 );
 158 }
 159
 160 char **
 161 ldap_explode_rdn( char *rdn, int notypes )
 162 {
 163         Debug( LDAP_DEBUG_TRACE, "ldap_explode_rdn\n", 0, 0, 0 );
 164         return explode_name( rdn, notypes, 0 );
 165 }
 166
 167 static char **
 168 explode_name( char *name, int notypes, int is_dn )
 169 {
 170         char    *p, *q, **parts = NULL;
 171         int     state, count = 0, endquote, len;
 172
 173         p = name-1;
 174         state = OUTQUOTE;
 175
 176         do {
 177
 178                 ++p;
 179                 switch ( *p ) {
 180                 case '\\':
 181                         if ( *++p == '\0' )
 182                                 p--;
 183                         break;
 184                 case '"':
 185                         if ( state == INQUOTE )
 186                                 state = OUTQUOTE;
 187                         else
 188                                 state = INQUOTE;
 189                         break;
 190                 case '+':
 191                         if (!is_dn)
 192                                 goto end_part;
 193                         break;
 194                 case ';':
 195                 case ',':
 196                         if (!is_dn)
 197                                 break;
 198                         goto end_part;
 199                 case '\0':
 200                 end_part:
 201                         if ( state == OUTQUOTE ) {
 202                                 ++count;
 203                                 if ( parts == NULL ) {
 204                                         if (( parts = (char **)malloc( 8
 205                                                  * sizeof( char *))) == NULL )
 206                                                 return( NULL );
 207                                 } else if ( count >= 8 ) {
 208                                         if (( parts = (char **)realloc( parts,
 209                                                 (count+1) * sizeof( char *)))
 210                                                 == NULL )
 211                                                 return( NULL );
 212                                 }
 213                                 parts[ count ] = NULL;
 214                                 endquote = 0;
 215                                 if ( notypes ) {
 216                                         for ( q = name;
 217                                             q < p && *q != '='; ++q ) {
 218                                                 ;
 219                                         }
 220                                         if ( q < p ) {
 221                                                 name = ++q;
 222                                         }
 223                                         if ( *name == '"' ) {
 224                                                 ++name;
 225                                         }
 226
 227                                         if ( *(p-1) == '"' ) {
 228                                                 endquote = 1;
 229                                                 --p;
 230                                         }
 231                                 }
 232
 233                                 len = p - name;
 234                                 if (( parts[ count-1 ] = (char *)calloc( 1,
 235                                     len + 1 )) != NULL ) {
 236                                         SAFEMEMCPY( parts[ count-1 ], name,
 237                                             len );
 238                                         parts[ count-1 ][ len ] = '\0';
 239                                 }
 240
 241                                 /*
 242                                  *  Don't forget to increment 'p' back to where
 243                                  *  it should be.  If we don't, then we will
 244                                  *  never get past an "end quote."
 245                                  */
 246                                 if ( endquote == 1 )
 247                                         p++;
 248
 249                                 name = *p ? p + 1 : p;
 250                                 while ( isascii( *name ) && isspace( *name ) )
 251                                         ++name;
 252                         }
 253                         break;
 254                 }
 255         } while ( *p );
 256
 257         return( parts );
 258 }
 259
 260
 261 int
 262 ldap_is_dns_dn( char *dn )
 263 {
 264         return( dn[ 0 ] != '\0' && strchr( dn, '=' ) == NULL &&
 265             strchr( dn, ',' ) == NULL );
 266 }
 267