isc_result_t dhcp_group_destroy (omapi_object_t *h, const char *file, int line) { struct group_object *group, *t; isc_result_t status; if (h -> type != dhcp_type_group) return ISC_R_INVALIDARG; group = (struct group_object *)h; if (group -> name) { if (group_name_hash) { t = (struct group_object *)0; if (group_hash_lookup (&t, group_name_hash, group -> name, strlen (group -> name), MDL)) { group_hash_delete (group_name_hash, group -> name, strlen (group -> name), MDL); group_object_dereference (&t, MDL); } } dfree (group -> name, file, line); group -> name = (char *)0; } if (group -> group) group_dereference (&group -> group, MDL); return ISC_R_SUCCESS; }
isc_result_t supersede_group (struct group_object *group, int writep) { struct group_object *t, *u; isc_result_t status; /* Register the group in the group name hash table, so we can look it up later. */ if (group_name_hash) { t = (struct group_object *)0; group_hash_lookup (&t, group_name_hash, group -> name, strlen (group -> name), MDL); if (t && t != group) { /* If this isn't a dynamic entry, then we need to flag the replacement as not dynamic either - otherwise, if the dynamic entry is deleted later, the static entry will come back next time the server is stopped and restarted. */ if (!(t -> flags & GROUP_OBJECT_DYNAMIC)) group -> flags |= GROUP_OBJECT_STATIC; /* Delete the old object if it hasn't already been deleted. If it has already been deleted, get rid of the hash table entry. This is a legitimate situation - a deleted static object needs to be kept around so we remember it's deleted. */ if (!(t -> flags & GROUP_OBJECT_DELETED)) delete_group (t, 0); else { group_hash_delete (group_name_hash, group -> name, strlen (group -> name), MDL); group_object_dereference (&t, MDL); } } } else { group_new_hash (&group_name_hash, 0, MDL); t = (struct group_object *)0; } /* Add the group to the group name hash if it's not already there, and also thread it into the list of dynamic groups if appropriate. */ if (!t) { group_hash_add (group_name_hash, group -> name, strlen (group -> name), group, MDL); } /* Store the group declaration in the lease file. */ if (writep && group_write_hook) { if (!(*group_write_hook) (group)) return ISC_R_IOERROR; } return ISC_R_SUCCESS; }
isc_result_t delete_group (struct group_object *group, int writep) { struct group_object *d; /* The group should exist and be hashed - if not, it's invalid. */ if (group_name_hash) { d = (struct group_object *)0; group_hash_lookup (&d, group_name_hash, group -> name, strlen (group -> name), MDL); } else return ISC_R_INVALIDARG; if (!d) return ISC_R_INVALIDARG; /* Also not okay to delete a group that's not the one in the hash table. */ if (d != group) return ISC_R_INVALIDARG; /* If it's dynamic, and we're deleting it, we can just blow away the hash table entry. */ if ((group -> flags & GROUP_OBJECT_DYNAMIC) && !(group -> flags & GROUP_OBJECT_STATIC)) { group_hash_delete (group_name_hash, group -> name, strlen (group -> name), MDL); } else { group -> flags |= GROUP_OBJECT_DELETED; if (group -> group) group_dereference (&group -> group, MDL); } /* Store the group declaration in the lease file. */ if (writep && group_write_hook) { if (!(*group_write_hook) (group)) return ISC_R_IOERROR; } return ISC_R_SUCCESS; }
isc_result_t dhcp_group_lookup (omapi_object_t **lp, omapi_object_t *id, omapi_object_t *ref) { omapi_value_t *tv = (omapi_value_t *)0; isc_result_t status; struct group_object *group; if (!ref) return ISC_R_NOKEYS; /* First see if we were sent a handle. */ status = omapi_get_value_str (ref, id, "handle", &tv); if (status == ISC_R_SUCCESS) { status = omapi_handle_td_lookup (lp, tv -> value); omapi_value_dereference (&tv, MDL); if (status != ISC_R_SUCCESS) return status; /* Don't return the object if the type is wrong. */ if ((*lp) -> type != dhcp_type_group) { omapi_object_dereference (lp, MDL); return ISC_R_INVALIDARG; } } /* Now look for a name. */ status = omapi_get_value_str (ref, id, "name", &tv); if (status == ISC_R_SUCCESS) { group = (struct group_object *)0; if (group_name_hash && group_hash_lookup (&group, group_name_hash, (const char *) tv -> value -> u.buffer.value, tv -> value -> u.buffer.len, MDL)) { omapi_value_dereference (&tv, MDL); if (*lp && *lp != (omapi_object_t *)group) { group_object_dereference (&group, MDL); omapi_object_dereference (lp, MDL); return ISC_R_KEYCONFLICT; } else if (!*lp) { /* XXX fix so that hash lookup itself creates XXX the reference. */ omapi_object_reference (lp, (omapi_object_t *)group, MDL); group_object_dereference (&group, MDL); } } else if (!*lp) return ISC_R_NOTFOUND; } /* If we get to here without finding a group, no valid key was specified. */ if (!*lp) return ISC_R_NOKEYS; if (((struct group_object *)(*lp)) -> flags & GROUP_OBJECT_DELETED) { omapi_object_dereference (lp, MDL); return ISC_R_NOTFOUND; } return ISC_R_SUCCESS; }