264 lines
8.1 KiB
C
264 lines
8.1 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "config.h"
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#include "error.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_LIBPTHREAD
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#include <pthread.h>
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#endif
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/*
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* Error strings
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*/
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const char* __GUAC_STATUS_SUCCESS_STR = "Success";
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const char* __GUAC_STATUS_NO_MEMORY_STR = "Insufficient memory";
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const char* __GUAC_STATUS_CLOSED_STR = "Closed";
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const char* __GUAC_STATUS_TIMEOUT_STR = "Timed out";
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const char* __GUAC_STATUS_IO_ERROR_STR = "Input/output error";
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const char* __GUAC_STATUS_INVALID_ARGUMENT_STR = "Invalid argument";
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const char* __GUAC_STATUS_INTERNAL_ERROR_STR = "Internal error";
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const char* __GUAC_STATUS_UNKNOWN_STATUS_STR = "UNKNOWN STATUS CODE";
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const char* __GUAC_STATUS_NO_SPACE_STR = "Insufficient space";
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const char* __GUAC_STATUS_INPUT_TOO_LARGE_STR = "Input too large";
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const char* __GUAC_STATUS_RESULT_TOO_LARGE_STR = "Result too large";
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const char* __GUAC_STATUS_PERMISSION_DENIED_STR = "Permission denied";
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const char* __GUAC_STATUS_BUSY_STR = "Resource busy";
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const char* __GUAC_STATUS_NOT_AVAILABLE_STR = "Resource not available";
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const char* __GUAC_STATUS_NOT_SUPPORTED_STR = "Not supported";
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const char* __GUAC_STATUS_NOT_INPLEMENTED_STR = "Not implemented";
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const char* __GUAC_STATUS_TRY_AGAIN_STR = "Temporary failure";
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const char* __GUAC_STATUS_PROTOCOL_ERROR_STR = "Protocol violation";
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const char* __GUAC_STATUS_NOT_FOUND_STR = "Not found";
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const char* __GUAC_STATUS_CANCELED_STR = "Canceled";
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const char* __GUAC_STATUS_OUT_OF_RANGE_STR = "Value out of range";
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const char* __GUAC_STATUS_REFUSED_STR = "Operation refused";
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const char* __GUAC_STATUS_TOO_MANY_STR = "Insufficient resources";
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const char* __GUAC_STATUS_WOULD_BLOCK_STR = "Operation would block";
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const char* guac_status_string(guac_status status) {
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switch (status) {
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/* No error */
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case GUAC_STATUS_SUCCESS:
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return __GUAC_STATUS_SUCCESS_STR;
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/* Out of memory */
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case GUAC_STATUS_NO_MEMORY:
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return __GUAC_STATUS_NO_MEMORY_STR;
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/* End of stream */
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case GUAC_STATUS_CLOSED:
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return __GUAC_STATUS_CLOSED_STR;
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/* Timeout */
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case GUAC_STATUS_TIMEOUT:
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return __GUAC_STATUS_TIMEOUT_STR;
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/* Further information in errno */
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case GUAC_STATUS_SEE_ERRNO:
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return strerror(errno);
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/* Input/output error */
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case GUAC_STATUS_IO_ERROR:
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return __GUAC_STATUS_IO_ERROR_STR;
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/* Invalid argument */
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case GUAC_STATUS_INVALID_ARGUMENT:
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return __GUAC_STATUS_INVALID_ARGUMENT_STR;
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/* Internal error */
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case GUAC_STATUS_INTERNAL_ERROR:
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return __GUAC_STATUS_INTERNAL_ERROR_STR;
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/* Out of space */
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case GUAC_STATUS_NO_SPACE:
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return __GUAC_STATUS_NO_SPACE_STR;
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/* Input too large */
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case GUAC_STATUS_INPUT_TOO_LARGE:
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return __GUAC_STATUS_INPUT_TOO_LARGE_STR;
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/* Result too large */
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case GUAC_STATUS_RESULT_TOO_LARGE:
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return __GUAC_STATUS_RESULT_TOO_LARGE_STR;
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/* Permission denied */
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case GUAC_STATUS_PERMISSION_DENIED:
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return __GUAC_STATUS_PERMISSION_DENIED_STR;
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/* Resource is busy */
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case GUAC_STATUS_BUSY:
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return __GUAC_STATUS_BUSY_STR;
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/* Resource not available */
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case GUAC_STATUS_NOT_AVAILABLE:
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return __GUAC_STATUS_NOT_AVAILABLE_STR;
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/* Not supported */
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case GUAC_STATUS_NOT_SUPPORTED:
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return __GUAC_STATUS_NOT_SUPPORTED_STR;
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/* Not implemented */
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case GUAC_STATUS_NOT_INPLEMENTED:
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return __GUAC_STATUS_NOT_INPLEMENTED_STR;
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/* Temporary failure */
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case GUAC_STATUS_TRY_AGAIN:
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return __GUAC_STATUS_TRY_AGAIN_STR;
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/* Guacamole protocol error */
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case GUAC_STATUS_PROTOCOL_ERROR:
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return __GUAC_STATUS_PROTOCOL_ERROR_STR;
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/* Resource not found */
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case GUAC_STATUS_NOT_FOUND:
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return __GUAC_STATUS_NOT_FOUND_STR;
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/* Operation canceled */
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case GUAC_STATUS_CANCELED:
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return __GUAC_STATUS_CANCELED_STR;
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/* Value out of range */
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case GUAC_STATUS_OUT_OF_RANGE:
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return __GUAC_STATUS_OUT_OF_RANGE_STR;
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/* Operation refused */
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case GUAC_STATUS_REFUSED:
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return __GUAC_STATUS_REFUSED_STR;
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/* Too many resource in use */
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case GUAC_STATUS_TOO_MANY:
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return __GUAC_STATUS_TOO_MANY_STR;
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/* Operation would block */
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case GUAC_STATUS_WOULD_BLOCK:
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return __GUAC_STATUS_WOULD_BLOCK_STR;
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/* Unknown status code */
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default:
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return __GUAC_STATUS_UNKNOWN_STATUS_STR;
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}
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}
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#ifdef HAVE_LIBPTHREAD
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/* PThread implementation of __guac_error */
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static pthread_key_t __guac_error_key;
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static pthread_once_t __guac_error_key_init = PTHREAD_ONCE_INIT;
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static pthread_key_t __guac_error_message_key;
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static pthread_once_t __guac_error_message_key_init = PTHREAD_ONCE_INIT;
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static void __guac_free_pointer(void* pointer) {
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/* Free memory allocated to status variable */
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free(pointer);
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}
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static void __guac_alloc_error_key() {
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/* Create key, destroy any allocated variable on thread exit */
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pthread_key_create(&__guac_error_key, __guac_free_pointer);
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}
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static void __guac_alloc_error_message_key() {
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/* Create key, destroy any allocated variable on thread exit */
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pthread_key_create(&__guac_error_message_key, __guac_free_pointer);
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}
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guac_status* __guac_error() {
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/* Pointer for thread-local data */
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guac_status* status;
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/* Init error key, if not already initialized */
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pthread_once(&__guac_error_key_init, __guac_alloc_error_key);
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/* Retrieve thread-local status variable */
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status = (guac_status*) pthread_getspecific(__guac_error_key);
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/* Allocate thread-local status variable if not already allocated */
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if (status == NULL) {
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status = malloc(sizeof(guac_status));
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pthread_setspecific(__guac_error_key, status);
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}
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return status;
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}
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const char** __guac_error_message() {
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/* Pointer for thread-local data */
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const char** message;
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/* Init error message key, if not already initialized */
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pthread_once(
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&__guac_error_message_key_init,
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__guac_alloc_error_message_key
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);
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/* Retrieve thread-local message variable */
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message = (const char**) pthread_getspecific(__guac_error_message_key);
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/* Allocate thread-local message variable if not already allocated */
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if (message == NULL) {
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message = malloc(sizeof(const char*));
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pthread_setspecific(__guac_error_message_key, message);
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}
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return message;
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}
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#else
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/* Default (not-threadsafe) implementation */
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static guac_status __guac_error_unsafe_storage;
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static const char** __guac_error_message_unsafe_storage;
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guac_status* __guac_error() {
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return &__guac_error_unsafe_storage;
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}
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const char** __guac_error_message() {
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return &__guac_error_message_unsafe_storage;
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}
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/* Warn about threadsafety */
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#warn No threadsafe implementation of __guac_error exists for your platform, so a default non-threadsafe implementation has been used instead. This may lead to incorrect status codes being reported for failures. Please consider adding support for your platform, or filing a bug report with the Guacamole project.
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#endif
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