Re: Operational attribute plugins

[Luke Howard <lukeh@PADL.COM>]

Thanks to some generous help from Sun, I've ditched the 
proprietary virtual attribute support that I hacked 
together yesterday and replaced it with one compatible
with Sun ONE DS 5.x. Being able to target a single
plugin to both directory servers is a huge boon for us.

Here's a reimplementation of the plugin I sent yesterday,
which adds the "distinguishedName" attribute to each
entry:

int dnt_opattr_init(Slapi_PBlock *pb);

static Slapi_PluginDesc pluginDescription = {
   "dnt-plugin",
   "PADL",
   "1.0",
   "Sample Computed Attribute plugin"
};

/*
 * Add the distinguishedName "operational" attribute to
 * the entry.
 */
static int dnt_compute(computed_attr_context *c,
   char *type,
   Slapi_Entry *e,
   slapi_compute_output_t outputfn)
{
   Slapi_Entry *entry;
   Slapi_Value *value;
   Slapi_Attr *attr;
   char *dn;
   int rc = -1; /* no attribute found */

   if (strcasecmp(type, "distinguishedName") == 0 ||
       strcmp(type, "*") == 0 /* naughty */ ) {
      rc = 1; /* error */
      dn = slapi_entry_get_dn(entry);
      attr = slapi_attr_new();
      attr = slapi_attr_init(attr, "distinguishedName");
      if (attr == NULL) {
         goto done;
      }
      value = slapi_value_new_string(dn);
      if (slapi_attr_add_value(attr, value) == 0) {
         rc = (*outputfn)(c, attr, e);
      }
      slapi_attr_free(&attr);
      slapi_value_free(&value);
   }

done:
   return rc;
}

int dnt_opattr_init(Slapi_PBlock *pb)
{
   if (slapi_pblock_set(pb, SLAPI_PLUGIN_VERSION, SLAPI_PLUGIN_VERSION_03) != 0 ||
       slapi_pblock_set(pb, SLAPI_PLUGIN_DESCRIPTION, &pluginDescription) != 0 ||
       slapi_compute_add_evaluator(dnt_compute) != 0) {
      slapi_log_error(SLAPI_LOG_PLUGIN, "dnt_opattr_init",
            "Error registering Sample Distinguished Name plugin\n");
      return -1;
   }

   return 0;
}


-- Luke

--
Luke Howard | PADL Software Pty Ltd | www.padl.com