Red Hat DIRECTORY SERVER 7.1 - PLUG-IN PROGRAMMERS Manual page 59

Code Example 4-1
from the parameter block and prints the data to the error log. */
int
test_preop_search( Slapi_PBlock *pb )
{
char *base, *filter_str, *attr_type, *substr_init, *substr_final;
char **substr_any;
int scope, deref, filter_type, i;
Slapi_Filter *filter;
struct berval *bval;
/* Log a message to indicate when the plug-in function starts */
slapi_log_error( SLAPI_LOG_PLUGIN, "test_preop_search",
"*** PREOPERATION SEARCH PLUGIN ***\n");
/* Get and log the base DN of the search criteria */
if ( slapi_pblock_get( pb, SLAPI_SEARCH_TARGET, &base ) == 0 )
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_TARGET",
"%s\n", base );
/* Get and log the search scope */
if ( slapi_pblock_get( pb, SLAPI_SEARCH_SCOPE, &scope ) == 0 ) {
switch( scope ) {
case LDAP_SCOPE_BASE:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_SCOPE",
"LDAP_SCOPE_BASE\n" );
break;
case LDAP_SCOPE_ONELEVEL:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_SCOPE",
"LDAP_SCOPE_ONELEVEL\n" );
break;
case LDAP_SCOPE_SUBTREE:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_SCOPE",
"LDAP_SCOPE_SUBTREE\n" );
break;
default:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_SCOPE",
"unknown value specified: %d\n", scope );
break;
}
}
/* Get and log the alias dereferencing setting */
if ( slapi_pblock_get( pb, SLAPI_SEARCH_DEREF, &deref ) == 0 ) {
switch( deref ) {
case LDAP_DEREF_NEVER:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_DEREF",
"LDAP_DEREF_NEVER\n" );
break;
case LDAP_DEREF_SEARCHING:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_DEREF",
"LDAP_DEREF_SEARCHING\n" );
break;
case LDAP_DEREF_FINDING:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_DEREF",
"LDAP_DEREF_FINDING\n" );
break;
case LDAP_DEREF_ALWAYS:
slapi_log_error( SLAPI_LOG_PLUGIN, "SLAPI_SEARCH_DEREF",
"LDAP_DEREF_ALWAYS\n" );
Sample Pre-Operation Search and Initialization Functions (Continued)
An Example Pre-Operation Plug-in
Chapter 4 A Quick Example 57