89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/*
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* Copyright (C) 2014 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "id.h"
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#include "error.h"
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#ifdef HAVE_OSSP_UUID_H
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#include <ossp/uuid.h>
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#else
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#include <uuid.h>
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#endif
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#include <stdlib.h>
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char* guac_generate_id(char prefix) {
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char* buffer;
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char* identifier;
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size_t identifier_length;
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uuid_t* uuid;
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/* Attempt to create UUID object */
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if (uuid_create(&uuid) != UUID_RC_OK) {
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guac_error = GUAC_STATUS_NO_MEMORY;
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guac_error_message = "Could not allocate memory for UUID";
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return NULL;
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}
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/* Generate random UUID */
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if (uuid_make(uuid, UUID_MAKE_V4) != UUID_RC_OK) {
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uuid_destroy(uuid);
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guac_error = GUAC_STATUS_NO_MEMORY;
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guac_error_message = "UUID generation failed";
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return NULL;
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}
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/* Allocate buffer for future formatted ID */
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buffer = malloc(UUID_LEN_STR + 2);
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if (buffer == NULL) {
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uuid_destroy(uuid);
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guac_error = GUAC_STATUS_NO_MEMORY;
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guac_error_message = "Could not allocate memory for connection ID";
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return NULL;
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}
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identifier = &(buffer[1]);
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identifier_length = UUID_LEN_STR + 1;
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/* Build connection ID from UUID */
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if (uuid_export(uuid, UUID_FMT_STR, &identifier, &identifier_length) != UUID_RC_OK) {
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free(buffer);
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uuid_destroy(uuid);
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guac_error = GUAC_STATUS_INTERNAL_ERROR;
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guac_error_message = "Conversion of UUID to connection ID failed";
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return NULL;
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}
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uuid_destroy(uuid);
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buffer[0] = prefix;
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buffer[UUID_LEN_STR + 1] = '\0';
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return buffer;
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}
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