| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "config.h" |
| |
| #include "guacamole/error.h" |
| #include "id.h" |
| |
| #ifdef HAVE_OSSP_UUID_H |
| #include <ossp/uuid.h> |
| #else |
| #include <uuid.h> |
| #endif |
| |
| #include <stdlib.h> |
| |
| char* guac_generate_id(char prefix) { |
| |
| char* buffer; |
| char* identifier; |
| size_t identifier_length; |
| |
| uuid_t* uuid; |
| |
| /* Attempt to create UUID object */ |
| if (uuid_create(&uuid) != UUID_RC_OK) { |
| guac_error = GUAC_STATUS_NO_MEMORY; |
| guac_error_message = "Could not allocate memory for UUID"; |
| return NULL; |
| } |
| |
| /* Generate random UUID */ |
| if (uuid_make(uuid, UUID_MAKE_V4) != UUID_RC_OK) { |
| uuid_destroy(uuid); |
| guac_error = GUAC_STATUS_NO_MEMORY; |
| guac_error_message = "UUID generation failed"; |
| return NULL; |
| } |
| |
| /* Allocate buffer for future formatted ID */ |
| buffer = malloc(UUID_LEN_STR + 2); |
| if (buffer == NULL) { |
| uuid_destroy(uuid); |
| guac_error = GUAC_STATUS_NO_MEMORY; |
| guac_error_message = "Could not allocate memory for connection ID"; |
| return NULL; |
| } |
| |
| identifier = &(buffer[1]); |
| identifier_length = UUID_LEN_STR + 1; |
| |
| /* Build connection ID from UUID */ |
| if (uuid_export(uuid, UUID_FMT_STR, &identifier, &identifier_length) != UUID_RC_OK) { |
| free(buffer); |
| uuid_destroy(uuid); |
| guac_error = GUAC_STATUS_INTERNAL_ERROR; |
| guac_error_message = "Conversion of UUID to connection ID failed"; |
| return NULL; |
| } |
| |
| uuid_destroy(uuid); |
| |
| buffer[0] = prefix; |
| buffer[UUID_LEN_STR + 1] = '\0'; |
| return buffer; |
| |
| } |
| |
| |