git.sur5r.net Git - openldap/blob - servers/slapd/back-passwd/search.c

   1 /* search.c - /etc/passwd backend search function */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/ctype.h>
   8 #include <ac/socket.h>
   9 #include <ac/string.h>
  10 #include <ac/time.h>
  11
  12 #include <pwd.h>
  13
  14 #include "slap.h"
  15 #include "external.h"
  16
  17 static Entry *pw2entry(
  18         Backend *be,
  19         struct passwd *pw,
  20         char *rdn);
  21
  22 int
  23 passwd_back_search(
  24     Backend     *be,
  25     Connection  *conn,
  26     Operation   *op,
  27     char        *base,
  28     int         scope,
  29     int         deref,
  30     int         slimit,
  31     int         tlimit,
  32     Filter      *filter,
  33     char        *filterstr,
  34     char        **attrs,
  35     int         attrsonly
  36 )
  37 {
  38         struct passwd   *pw;
  39         Entry           *e;
  40         char            *s;
  41         time_t          stoptime;
  42
  43         int sent = 0;
  44         int err = LDAP_SUCCESS;
  45
  46         char *rdn = NULL;
  47         char *parent = NULL;
  48         char *matched = NULL;
  49         char *user = NULL;
  50
  51         tlimit = (tlimit > be->be_timelimit || tlimit < 1) ? be->be_timelimit
  52             : tlimit;
  53         stoptime = op->o_time + tlimit;
  54         slimit = (slimit > be->be_sizelimit || slimit < 1) ? be->be_sizelimit
  55             : slimit;
  56
  57         endpwent();
  58
  59 #ifdef HAVE_SETPWFILE
  60         if ( be->be_private != NULL ) {
  61                 (void) setpwfile( (char *) be->be_private );
  62         }
  63 #endif /* HAVE_SETPWFILE */
  64
  65         /* Handle a query for the base of this backend */
  66         if ( be_issuffix( be,  base ) ) {
  67                 struct berval   val, *vals[2];
  68
  69                 vals[0] = &val;
  70                 vals[1] = NULL;
  71
  72                 matched = ch_strdup( base );
  73
  74                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  75                         /* Create an entry corresponding to the base DN */
  76                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  77                         e->e_attrs = NULL;
  78                         e->e_dn = ch_strdup( base );
  79
  80                         /* Use the first attribute of the DN
  81                         * as an attribute within the entry itself.
  82                         */
  83                         rdn = dn_rdn(NULL, base);
  84
  85                         if( rdn == NULL || (s = strchr(rdn, '=')) == NULL ) {
  86                                 err = LDAP_INVALID_DN_SYNTAX;
  87                                 goto done;
  88                         }
  89
  90                         val.bv_val = rdn_attr_value(rdn);
  91                         val.bv_len = strlen( val.bv_val );
  92                         attr_merge( e, rdn_attr_type(rdn), vals );
  93
  94                         free(rdn);
  95                         rdn = NULL;
  96
  97                         /* Every entry needs an objectclass. We don't really
  98                          * know if our hardcoded choice here agrees with the
  99                          * DN that was configured for this backend, but it's
 100                          * better than nothing.
 101                          *
 102                          * should be a configuratable item
 103                          */
 104                         val.bv_val = "organizationalUnit";
 105                         val.bv_len = strlen( val.bv_val );
 106                         attr_merge( e, "objectClass", vals );
 107
 108                         if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 109                                 send_search_entry( be, conn, op,
 110                                         e, attrs, attrsonly, 0, NULL );
 111                                 sent++;
 112                         }
 113                 }
 114
 115                 if ( scope != LDAP_SCOPE_BASE ) {
 116                         /* check all our "children" */
 117
 118                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 119                                 /* check for abandon */
 120                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 121                                 if ( op->o_abandon ) {
 122                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 123                                         endpwent();
 124                                         return( -1 );
 125                                 }
 126                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 127
 128                                 /* check time limit */
 129                                 if ( slap_get_time() > stoptime ) {
 130                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 131                                         NULL, NULL, NULL, NULL );
 132                                         endpwent();
 133                                         return( 0 );
 134                                 }
 135
 136                                 e = pw2entry( be, pw, NULL );
 137
 138                                 if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 139                                         /* check size limit */
 140                                         if ( --slimit == -1 ) {
 141                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 142                                                 NULL, NULL, NULL, NULL );
 143                                                 endpwent();
 144                                                 return( 0 );
 145                                         }
 146
 147                                         send_search_entry( be, conn, op,
 148                                                 e, attrs, attrsonly, 0, NULL );
 149                                         sent++;
 150                                 }
 151
 152                                 entry_free( e );
 153                         }
 154                         endpwent();
 155                 }
 156
 157         } else {
 158                 parent = dn_parent( be, base );
 159
 160                 /* This backend is only one layer deep. Don't answer requests for
 161                  * anything deeper than that.
 162                  */
 163                 if( !be_issuffix( be, parent ) ) {
 164                         int i;
 165                         for( i=0; be->be_suffix[i] != NULL; i++ ) {
 166                                 if( dn_issuffix( base, be->be_suffix[i] ) ) {
 167                                         matched = ch_strdup( be->be_suffix[i] );
 168                                         break;
 169                                 }
 170                         }
 171                         err = LDAP_NO_SUCH_OBJECT;
 172                         goto done;
 173                 }
 174
 175                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 176                         goto done;
 177                 }
 178
 179                 rdn = dn_rdn( NULL, base );
 180
 181                 if ( (user = rdn_attr_value(rdn)) == NULL) {
 182                         err = LDAP_OPERATIONS_ERROR;
 183                         goto done;
 184                 }
 185
 186                 user = str2lower( user );
 187
 188                 if ( (pw = getpwnam( user )) == NULL ) {
 189                         matched = parent;
 190                         parent = NULL;
 191                         err = LDAP_NO_SUCH_OBJECT;
 192                         goto done;
 193                 }
 194
 195                 e = pw2entry( be, pw, rdn );
 196
 197                 if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 198                         send_search_entry( be, conn, op,
 199                                 e, attrs, attrsonly, 0, NULL );
 200                         sent++;
 201                 }
 202
 203                 entry_free( e );
 204         }
 205
 206 done:
 207         send_ldap_result( conn, op,
 208                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, NULL,
 209                 NULL, NULL );
 210
 211         if( matched != NULL ) free( matched );
 212         if( parent != NULL ) free( parent );
 213         if( rdn != NULL ) free( rdn );
 214         if( user != NULL ) free( user );
 215
 216         return( 0 );
 217 }
 218
 219 static Entry *
 220 pw2entry( Backend *be, struct passwd *pw, char *rdn )
 221 {
 222         Entry           *e;
 223         char            buf[256];
 224         struct berval   val;
 225         struct berval   *vals[2];
 226
 227         vals[0] = &val;
 228         vals[1] = NULL;
 229
 230         /*
 231          * from pw we get pw_name and make it cn
 232          * give it an objectclass of person.
 233          */
 234
 235         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 236         e->e_attrs = NULL;
 237
 238         /* rdn attribute type should be a configuratable item */
 239         sprintf( buf, "uid=%s,%s", pw->pw_name, be->be_suffix[0] );
 240         e->e_dn = ch_strdup( buf );
 241         e->e_ndn = ch_strdup( buf );
 242         (void) dn_normalize_case( e->e_ndn );
 243
 244         val.bv_val = pw->pw_name;
 245         val.bv_len = strlen( pw->pw_name );
 246         attr_merge( e, "uid", vals );   /* required by uidObject */
 247         attr_merge( e, "cn", vals );    /* required by person */
 248         attr_merge( e, "sn", vals );    /* required by person */
 249
 250 #ifdef HAVE_PW_GECOS
 251         /*
 252          * if gecos is present, add it as a cn. first process it
 253          * according to standard BSD usage. If the processed cn has
 254          * a space, use the tail as the surname.
 255          */
 256         if (pw->pw_gecos[0]) {
 257                 char *s;
 258
 259                 val.bv_val = pw->pw_gecos;
 260                 val.bv_len = strlen(val.bv_val);
 261                 attr_merge(e, "description", vals);
 262
 263                 s = strchr(val.bv_val, ',');
 264                 if (s)
 265                         *s = '\0';
 266                 s = strchr(val.bv_val, '&');
 267                 if (s) {
 268                         int i = s - val.bv_val;
 269                         strncpy(buf, val.bv_val, i);
 270                         s = buf+i;
 271                         strcpy(s, pw->pw_name);
 272                         *s = TOUPPER(*s);
 273                         strcat(s, val.bv_val+i+1);
 274                         val.bv_val = buf;
 275                 }
 276                 val.bv_len = strlen(val.bv_val);
 277                 if ( strcmp( val.bv_val, pw->pw_name ))
 278                         attr_merge( e, "cn", vals );
 279                 if ( (s=strrchr(val.bv_val, ' '))) {
 280                         val.bv_val = s + 1;
 281                         val.bv_len = strlen(val.bv_val);
 282                         attr_merge(e, "sn", vals);
 283                 }
 284         }
 285 #endif
 286
 287         /* objectclasses should be configuratable items */
 288         val.bv_val = "person";
 289         val.bv_len = strlen( val.bv_val );
 290         attr_merge( e, "objectclass", vals );
 291
 292         val.bv_val = "uidObject";
 293         val.bv_len = strlen( val.bv_val );
 294         attr_merge( e, "objectclass", vals );
 295         return( e );
 296 }