mirror of
https://github.com/Netflix/dial-reference.git
synced 2026-06-08 02:49:58 +00:00
90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/*
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* Copyright (c) 2014 Netflix, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETFLIX, INC. AND CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NETFLIX OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Functions related to storing/retrieving and manipulating DIAL data.
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*/
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#include "dial_data.h"
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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char dial_data_dir[256] = DIAL_DATA_DIR;
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void set_dial_data_dir(const char *data_dir) {
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strncpy(dial_data_dir, data_dir, 255);
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}
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/**
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* Returns the path where data is stored for the given app.
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*/
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static char* getAppPath(char *app_name) {
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size_t name_size = strlen(app_name) + sizeof(dial_data_dir) + 1;
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char* filename = (char*) malloc(name_size);
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filename[0] = 0;
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strncat(filename, dial_data_dir, name_size);
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strncat(filename, app_name, name_size - sizeof(dial_data_dir));
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return filename;
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}
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void store_dial_data(char app_name[], DIALData *data) {
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char* filename = getAppPath(app_name);
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FILE *f = fopen(filename, "w");
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if (f == NULL) {
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printf("Cannot open DIAL data output file: %s\n", filename);
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exit(1);
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}
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free(filename);
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for (DIALData *first = data; first != NULL; first = first->next) {
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fprintf(f, "%s %s\n", first->key, first->value);
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}
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fclose(f);
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}
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DIALData *retrieve_dial_data(char *app_name) {
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char* filename = getAppPath(app_name);
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FILE *f = fopen(filename, "r");
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free(filename);
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if (f == NULL) {
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return NULL; // no dial data found, that's fine
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}
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DIALData *result = NULL;
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char key[256];
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char value[256];
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while (fscanf(f, "%255s %255s\n", key, value) != EOF) {
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DIALData *newNode = (DIALData *) malloc(sizeof(DIALData));
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newNode->key = (char *) calloc(1, strlen(key));
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strncpy(newNode->key, key, strlen(key));
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newNode->value = (char *) calloc(1, strlen(value));
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strncpy(newNode->value, value, strlen(value));
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newNode->next = result;
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result = newNode;
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}
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fclose(f);
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return result;
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}
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